E46 fuel pump not priming. installing a new fuel pump in an e46 is ridiculously easy.

E46 fuel pump not priming The fuel pump is running the entire time engine is operational. Supposedly 4-5 volts is to prime the pump, and power the sending init, but I do not have wiring diagrams to verify. You also will not get power at the fuel pump for 10-15 seconds, maybe like 2-3 seconds for the Prime function when the My 2003 E46 330i is not starting. Yeah this is the answer, when you put the key in to the accessory position you should hear the fuel pump prime. , 111 Peter I immediately noticed the fuel pump would not prime. Save Share For those wanting to see more of BMW's 4th generation 3 series, the beautiful and timeless E46. 0L. Fuel pressure - looks good on priming, idle (48psi). Battery voltage in the OBC was at 12. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada HELP! Like the title says, I removed the intake manifold to change the hard coolant lines, I put everything back together, I put the #54 fuse back in for the furl pump, plugged the battery back on, and when I went to start it, it would crank but not start. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada 16146766942E46 BMW E46 3-Series Fuel Pump Assembly OEM [Select Model:330i & 330ci 2001-2005] [Enter the last 7 of your VIN: I can always hear the pump prime when I turn the key, and it's not doing that. First diagnosis was the AA pointed me at the high pressure fuel sensor, odb was was showing low pressure. Today I took voltages at the fuel pump wiring harness 0v, fuel pump sending unit 0v and fuel pump fuse 0v. Mechanical Failures. I took out the seat wanting to change the fuel pump but I listened for the pump to make the noise and it does. Post Cancel. The SULEV & M3 utilize a EKPS controller for the fuel pump. So if it is not providing it when priming it, it is not working. If you hear it for a few secs, your fuel pump is priming the system and is working. I bought a used one and still nothing. I can't hear the pump priming anymore either. Everything hooked up flashed to V3 software, etc. Our professionals are here to help make sure you find the answers you need to your questions and ignition on and fuel pump priming: 50 PSI ignition on and fuel pump off: 48 PSI engine cranking (when fuel pump turns immediately on again): 50 PSI E46 Fanatics Forum is not in any way affiliated with Bayerische I found that when I read the pressure at the fuel rail I get 50 psi when priming the fuel pump with ignition on, but when it stops priming the pressure drops to 0 near immediately. Fuel Pump will not come on if relay not jumped but fuse 25amp still blows when ignition turned on. Pre-supply pump under the driver's seat does not prime on ignition, and therefore car won't start. Join Date: Jun 2020; Posts: 2653 #7. Also replaced fuel filter since it was the original. PROBLEM & WHAT I'VE TRIED: Pre-supply pump under the driver's seat does not prime on ignition, and therefore car won't start. However, the fuel pump may not start up again once it has cooled, so the best thing to do is immediately check your fuel pump to avoid further issues. Bimmerforums is the preferred online BMW Forum and community for BMW owners. Cold start issues (stalling) after replacing fuel pump E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. 4. SULEV uses a pump controller module (EKPS), so the best bet would be to fire up INPA and see if there is a diagnostic to activate the pump. It’s more common than you would think. They did not trust the current batch of in tank High pressure pumps to do the job reliably. dash indications upon ignition to 2 show coolant temp gage to red and automatic transmission cog light instead of P E46 Forums. The fuel pump assembly has an anti-flowback valve which ensures you retain fuel pressure for some amount of time after you turn the engine off. Tested voltage to the fuel pump. And some of the E46 fuel pumps fail even before that. To start viewing messages, select the forum that you want to visit from the selection below. I’m using the green wire to trigger my Painless Wiring relay. Need help before I spend money where it’s not needed. The engine of the Maicoletta used an unusual starter that rocked the crankshaft So long story short, after finishing reassembling my engine I plugged in my fuel pump fuse while the key was in position 2. vpogv: as much as you DO have a fuel pump on the 00 you also have a fuel pump relay which acts as a fuel pump cut off in the event of an accident, its highly possible that you have either not plugged that in or its possible that its broken, short out the relay wires that link to the pump to test, the way it works is as soon as the ignition is on you should hear the pump 4. After having read about the fuel pumps failing in the e46 generation, I ordered a fuel pressure gauge to check the pressure of my 07/2001 320i touring M54B22. I am also not getting power to the cam shaft position sensor. Driving Or Idle Surging. com for a good price on the Siemens-VDO oem pump. We don't care about purple. A fuel pressure reading on an E46 suffering from fuel pump drain-back leak with the Key On Engine Off. No. I do have a rough idle on start, no other issues (and a very occasional p1351). This caused a spark and it has been all downhill Problem: Fuel pump will not prime. no electricity to fuel pump. New sensor no difference, two sensors to Got the new pump in and you could hear it prime now and the car fired off within a couple cranks. , 111 Peter Street, The lean and misfire trouble codes point to too much air (vacuum leak) or not enough fuel (fuel pump or filter). Starter . E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren 1999 E46, fuel pump operates when relay is jumped with wire;but car blows fuse 25amp @ ECM when ignition is engaged. shawnsheridan 457 Replies. The car is suffering from a no start condition in the mornings and after it has sat for long If fuel pump not priming then it's easy to troubleshoot for either bad pump or bad relay. So be it, but ill pull the pump and test the connections first. When I turn the key, I can hear the fuel pump isn’t priming, so I replaced the fuel pump after checking all the fuses and relays were good and it’s still not working. Gone but not forgotten: 2005 E46 M3 | 2006 Confirmed battery voltage on startup at fuel pump connector; Tried "whacking" the fuel pump with no success; Car currently is reading slightly below 1/2 tank. then all you have to do is install the new unit in reverse order then flip the ignition switch a few time on and off to prime the pump that way there is enough fuel at the motor to have No tach signal, not relay closure, no power to fuel pump. is it because the fuel pump wont stop priming or wont reach pressure due to say the pressure regulator? either the relay or the DME. Safety interlock in case the engine dies in an accident the fuel pump shuts down. Save Share Reply #3 · Nov 9, 2012. If I were to guess, there is some kind of a timer to determine whether it’s necessary to prime the fuel pump or not. The 1/4 tank of fuel problem is also a common issue. I got everything buttoned back up and took it for a drive. voltage to the battery 11. I know the sound of the prime and this isnt it. This is typically not an issue with well engineered pumps. The sound only lasts for a few moments. Chas. This allows the car's fuel rail to build fuel pressure, so when you ignite the engine, IMO, any E46 fuel pump with more than 120k miles, is living on borrowed time. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Manage Consent I think my fuel pump went kupuut but I want to make sure the relay didnt go bad first. Signs and symptoms: about a month before it quit working I had a rough idle on a few occasions. . When I turn the key on position 2, I don't hear the fuel pump prime "the buzzing sound", and when I Before you blindly buy a new fuel pump, at least do the following: check the fuel level using instrument cluster test 06 to see fuel levels on both left and right sides: E46 Instrument Cluster Test remove back seat bottom section and listen for the fuel pump priming when ignition key is turned to position 2 EWS doesn't control fuel pump prime directly, and I DON'T know if the DME needs a valid code E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. If you’re not getting enough fuel pressure at KOEO, then I would likely suspect the fuel pump. This is where the electric fuel pump is located. The big concern is that the fuel pump is lubricated by diesel. E46 Fanatics Forum is not in any way affiliated with Bayerische At this point I was moving towards the crankshaft sensor, sparkplugs, and Fuel pump. I would much rather replace a part at my leisure, than have to be flat bedded to the Ran fine for about 3 seconds then idled down and died. If the outside air temperature is low enough, the pump does not prime, at least I don't hear it the way I usually do before turning the ignition on. You Fuel pump not priming during initial start sequence I don't think this is the biggest deal, but it'd be nice to If you can hear your fuel pump that loudly from inside the car, then I suspect a future failure is imminent. Moderator. The 30 number is random since I have noticed that the colder it is outside the more turns of the ignition is needed before the pump wakes up and this morning it was 38 degrees. But jumping pins 30-87 on the relay block will run the pump (car wont start while jumper is in). On a UK/euro car you can get the fuel pump to prime / run manually by grounding pin 10 at the X6004. A Faulty Fuel Pump Just like any other engine component, the fuel pump is prone to natural wear and tear. It is pobably the pump but I want to make sure its not the relay. Sounds like fuel pump and filter time. (2006 - 2013) E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999) E60 / E61 (2004 - 2010) Top Contributors this Month View All. thus unable to hold any pressure on the rail after shut down. I'm now on the search to see why the fuel pump is not turning on by itself. fuel pump priming. However, can this broken vacuum line contribute to the fuel pump not priming? If so then I Fuel pump primes and (appears) to be operating fine given the road test). It’s a crank no start situation. , 111 Peter Street, Suite 600, Toronto After I turn the ignition to position 2 30 times, only then will the fuel pump prime itself. Porsche's ran a whole battery of pumps E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999 I changed the fuel filter which hasn't been changed in probably 50K miles (the fuel was practically black when I emptied the old filter out). Come join Hello, so my 2004 bmw e45 325i die on my the other day, I couldn't listen to the fuel pump come on while I turned the ignition. Whenever I drive it,it drives perfect, fuel consumption is normal, idle is as usual. 3 Ohms. Vacuum leaks: Removed intake manifold and replaced CCV system (it had oil all over it, and the lower return tube was cracked), hard coolant lines, soft coolant/heater lines directly touching hard fuel pump not priming relays. Fuel pumps on an E46 are known to fail at about 150K. redram 289 Replies. So I decide to pull the fuel pump from the e46 and put it in my e39 so I can diagnose. Checked all fuses and every one of them were completely fine but Bought a bit of a project e36 323i sedan 1996. View Profile View Forum Posts BMW E46 320d Touring, year 2002, 460 000 km. Case closed! Even if this does not work, I would still replace the fuel pump anyway since the car is the wife and kid The fuel pump gets 12V and it sends fuel down the fuel line. This is with the engine running. Why Is My Fuel Pump Not Priming? 1. - I checked fuse 54 - good - checked the green fuel pump relay- good With the Key in Position 2 fuel pump does not prime. Goblin In 2021 indy mechanic replaced old fuel pump with Continental brand. It began to stumble at idle. The M56 (SULEV engine) and the S54 (E46 M3) use a 5 bar fuel system pressure. 5 bar while priming, but drops to 3 bar right after priming. I’m not getting power (3sec) at pump connector with ign on but good power when cranking, earth connection is good. Have not added more gas to confirm bad gas or faulty sending unit. I'm very sure I don't hear it priming E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. So sitting in stop and go traffic, few miles are put on the car but many hours. sapote. Open menu Open navigation Go to Reddit Home. , 111 Peter Street, Suite 600 The fuel pump prime Voltage only lasts about 4 seconds. If the pump is receiving power but is not running, or is running but not producing enough fuel pressure, then the pump is faulty Twist the key and you can hear the fuel pump prime. , 111 Peter Street, Suite 600, Since that occured I turn the key to ON in my garage I can hear the sound of the fuel pump priming the lines and coming up to pressure. Assuming the fuel pump draws around 6 Amps and is being feed around 14 Volts while the engine is running, then the effective running resistance of the fuel pump is only around 2. Did you find out what the problem was with your BMW fuel pump not priming ? Thanks 10-19-2014, 01:04 PM #21. If you do not hear the pump prime, take the end of a hammer and wrap on the metal fuel pump retaining ring a few times pretty hard, the key again, if the fuel pump primes and you can start the engine, replace the fuel pump. Takes literally less than a half hour. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada 18 to 20 is a failed pump, nothing to do with the filter. E46 General. go to autohausaz. Right now I have no fuel pressure (fuel pump not priming). At the minimum, fill the fuel filter housing. A Faulty Fuel Pump. I had the problem back in February, which I have written about in the After testing the fuel pump connector with a multimeter I am getting 12v to the fuel pump itself but I am not getting the pump to prime. I think the only way to have a completely silent fuel pump is by using one for many years. A weak fuel pump can bring surging on with brief periods of typical performance or a fuel pump that occasionally sends too much gasoline to the engine. , 111 Peter 3 series & 4 Series (E21, E30, E36, E46, E9x, F30, F32, F33, F36, F44) 1983 - 1991 ; Fuel pump not priming during initial start sequence; If this is your first visit, be sure to check out the FAQ by clicking the link above. I searched over and over on the internet and couldn't find the same problem I have, so here it goes. You should hear the pump prime when you turn the key in the ignition, but you may need to remove the rear seat. , 111 Peter Street, Suite 600, Toronto, Ontario I did a fuel pressure test mostly as PM and I found that my priming fuel pump values seem odd, at least compared to other values I found on the iNet. 1 after it died, and battery was replaced 6 months ago. That's all the fuel pump does. I had the problem back in February, which I have written about in the background section. Of course the engine cranks but doesn't start if the fuel pump doesn't neither. Consequently, crucial parts such as the impeller will wear out, creating Today's Posts; Member List; Calendar; Forum; Vehicle Discussion; E46 (2001 - 2006) If this is your first visit, be sure to check out the FAQ by clicking the link above. The pump produces the needed 3. BMW E46 320d Touring, year 2002, 460 000 km. Why Fuel Pump Not Priming? There is a space between the fuel pump and the ICE, which is known as the fuel relay of the car. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Hi all, My 2007 152 Corolla hatch fuel pump won’t prime, hard to start but will after lots of cranking then runs fine. Ok so I’ll start by saying I’ve replaced the fuel pump, filter, and the fuel pressure regulator (small hose as well). You may have to register before you can post: click the register link above to proceed. The pump works fine when the car is running, it just wont prime with the key on engine off. Content on E46 Fanatics Forum is generated by its users. If you don't hear the fuel pump prime, also check the fuel pump fuse before ruling out a dead pump. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada car cranking no start fuel pump fuel pump not priming fuel pump problems not starting. 03/14/2021 Replacement: Crankshaft Sensor, Sparkplugs, Fuel Pump Checked: Fuse in glovebox (Good) Realization: After replacing the crankshaft sensor, sparkplugs, I realize that the fuel pump wasn't priming. no prime. I can't hear the fuel pump priming. My 318i e46 won’t start first thing but will later in the day. Put the key in, turn the car on and wait about 5 to 10 seconds for the pump to prime (you will either hear it faintly ticking under the car or your car's odometer will beep, beep, beep and stop when the car is ready to be started - fuel is priming (new pump last summer) - did the good old fuel pressure test by pressing on the FPR valve it’s spraying so fuel is deff there (FPR also new from last year) E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. diesel fuel power primer pump. Checked fp fuse, fp relay fuse. Checked fuse 54. From there I decided to get the car towed. The fuel pump on my E83 X3 (M54 engine) began to "soft fail" with less than 90k miles on it. We know that the plug is getting Volts, can I do anything else before I have someone else look at it? No sound or any feeling of the pump priming. Jump to Latest Fuel pumps are not lifetime parts and one the post 2002 E46 they seem to be failing earlier than expect. You will not see power to the fuel pump again until the engine is Crank sensor does have something to do with power to the fuel pump, BUT not for priming. Once the pump stops, there is no more running of the fuel pump unless one of two things happen: E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. The engine computer uses that info and other parameters to tell the fuel injectors how long to run. hi my 2004 318i e46 has a new problem I have replaced the fuel filter and pump and still the pump wont prime for 2 secs. 35K subscribers in the e46 community. , 111 Peter Street, Suite 600, Toronto Here is the problem: it cranks but will not start. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Manage Yesterday I primed the pump 10 times (priming was sometimes start/stop for the 2 seconds, as opposed to a solid 2 second priming and sometimes she just wouldn't prime at all when key turned to on) - She started and ticked over perfectly for about a minute, then died. I think its plausible to assume: 1) Shitty fuel pump/bad connections and its not priming. What could be causing this? E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. Here’s the thing, I already got new battery (programmed), fuel pump, fuel filter, starter, alternator, crank and camshaft position sensors, all fuses are good, and I’m still having these problems. My fuel pump is not priming but it will turn on if I direct jump it. fuel pum fuses at the glove compartment box and fuel pump relay under the hood are good. , 111 Peter Street, Suite 600, Toronto Hi guys, Apologies if this is a repeat post, but i really like to know what you guys think of my cars problem, i couldn't find a post with all the symptoms listed on one page, so here goes: My (2002 e46) 320d has been acting up when starting, the situation: It was almost empty, very little diesel left (10 km range) when it failed to start once on a level surface. Just like any other engine component, the fuel pump is prone to natural wear and tear. If not you could try a little WD40 into the outlet, leave it to soak for a minute or two and then try again. Jump to Latest The fuel pump is not going to come on until we've got power to green. Idk I think i just needed to give everything more time for the fuel system to prime, but she’s running! After no action for 3 years sitting outdoors in a hobby shop collecting dust, this free39 is finally idling steady. Come join the discussion about M performance When key position 2 (one before ignition) is reached you can hear the fuel pump "prime" - sounds like a mechanical buzz/hum. It is a turbine pump and if you hear anything it would be at a very high frequency (whine). installing a new fuel pump in an e46 is ridiculously easy. All I did was remove the old filter and pop in a new one. I am able to hear the other pump in fuel tank priming and I can hear the fuel the M54 does not have fuel pressure sensors that can be read by an OBD reader. Looking at the picture I have the trigger on 30 and ground on 87 Not to say its free from defect entirely, but if its priming the system, you are getting fuel up to the filter at least. After replacing the fuel pump it still was not priming. That lasts about 3 seconds. You will have a 3-5 seconds prime cycle when the key is first tuned on, then the pump stops until the engine is cranked. My 2004 BMW 330ci has been hit with cold start issues. Being young and a student, naturally I ordered a pump and decided to replace it myself. the o2 sensor Why Is My Fuel Pump Not Priming? 1. Hi, I have a 2004 325i that won't start. Last time i tried it started fine and now it won't, no sysmptoms inbetween. On this particular model, activating the fuel pump relay does not engage the jet/ transfer pump, but merely the fuel pump. Swap your horn and fuel relays around and most likely that The black fuel pump relay turns on the fuel pump to let it prime for about three seconds when the key is turned to the second click position. Then before I start the car I was going to crank the car for 10-20 with the spark plugs out and the fuel pump fuse pulled. I do not have a way to bench test my old Replace the relay and the in tank fuel pump. I towed the car home and started to troubleshoot it. The fuel pump has been drawing too much amperage and has damaged the relay. Unlike the simpler on/off relay for the normal E46 3er. r/e46 When my e36 VDO fuel pump failed I replaced it with a Hella assembly at 1/6 the price Just did a "fuel prime" via OBD2 And fuel started coming out the Sure a good pump can improve fuel mileage over the "bad" one. 3K views When you turn on the ignition can you hear the fuel pump priming? Have you measure the battery voltage? Just because the radio works it doesn't mean it has enough amps to crank the engine. R. I'd like to apply 12V to the pump itself to see if it runs but i don't know which contacts to apply the 12V to. R I half expected that not to make a difference to the fuel pump noise, and that was exactly the case. So hang tight and read along. (popular at that time) that needs a feed pump to prime the High pressure pump. I’m getting ready to fire up my rebuilt 6. Tags 330d fuel pump. At this point the pump should be primed and then I was E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. enough resistance that a truly dry pump may not self- prime. While you do not have enough information to fully understand what is really going on, depending on the year, mileage and expected operating hours it might be wise to consider a BMW 3 Series Forum - Technical Talk on the BMW E46. 3. To start the car, I have to try multiple times and as soon as I can hear the pump priming, the car always turns on without E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. The engine of the Maicoletta used an unusual starter that rocked the crankshaft back and forth before firing instead of rotating it. Checked the relay behind the fuse "panel" and it was fine. Battery voltage present at main terminal The thing is, I got a new fuel pump and still the same problem as before. A weak pump deliver less than perfect pressure causing lean combustion which was not optimum to generate power and the car had lower mileage. I could hear the fuel pump prime before starting. , 111 Peter Street, Suite 600 To me it sounds as if the engine isn’t getting fuel? i can’t hear my fuel pump priming in ignition position 2, and could the left over fuel in the hoses be why it started for half a second 2-3 times but no isn’t since it can’t access anymore fuel? E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG Pump is aftermarket for the simple fact that the OEM pump is expensive as balls! I mean if i have to buy one because this isnt cutting it. 323i jlviii. My car's fuel pump does not prime, but I can get the vehicle to start after multiple instances of me playing back and forth with the ignition and trying to crank the vehicle. Jump to Latest A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. crank, no start It often has to do with the fuel pump priming. 5 Volts at the connector until the engine is actually cranked, when you will only see about 11. 5. Reactions: Bali. To confirm that you need to securely fit a fuel line onto the output nozzle and pass it to a jar then prime the pump and see if anything comes out. Xmak 330d. Skip to main content. Used to solve this by hitting the Just to be sure you (and future readers) understand why a M3 fuel pump and not a standard pump is needed for the repair of a SULEV tank/pump. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada So got a 04 e46 320dse coupe, and having a right issue with the fuel pump not engaging. 6. Hi all. The anti drain back valve on the fuel pump removes the need to prime every time you turn key to position 2. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada 2002 E46 330d Fuel pump issues. I did a fuel pressure test mostly as PM and I found that my priming fuel pump values seem odd, at least compared to other values I found on the iNet. After incorrectly relying on the OBD's display reading zero pressure, I confirmed that fuel was actually reaching the rail by testing physically at the Schroeder valve. fuses and relay good. BUT - will drop almost completely during issue and pedal is more the 10% E46 fuel pumps and fuel filter/regulator do not have codes because there are no sensors/electronics there. I replaced the fuel pump relay, I tried 4 different ones, so the fuses and the relay can be ruled out. If fuel pump not priming then it's easy to troubleshoot for either bad pump or bad relay. Can you hear it prime with the key in position 2? 2002 Topasblau M3 - Coupe - 6MT - Karbonius CSL Airbox - MSS54HP Is the fuel pump relay still behind the glove box like the e46 non M? edit: I just checked again and there are no black relays behind the glove box area. So I'm guessing there might be a problem with the fuel pump relay. There are plugs/caps on the unused connections. - ive checked fuel pump fuse (54), but its fine (any When I rebuilt my motor I just pulled the fuel pump fuse and the plugs and spun the motor over on the starter 5-10 seconds a few times. I have checked every fuse and relay in the car. Consequently, crucial parts such as the impeller will wear out, creating more My fuel pump does not prime when i turn on ignition and does not pump fuel (checked the valve on the fuel rail after cranking). I can actually start the engine and run it with the fuel pump directly jumped. As I mentioned, you need to remove the cabin air filter and housing, not hard, 3-4 Torx screws. 5 Volts while cranking. I engage the ignition to position 2 and the fuel pump should prime, by making a whirring noise as you guys probably know. Here is the problem: it cranks but will not start. I have a problem with my 2004 330i. We command the fuel pump on in the bi-directional menu simply by activating the fuel pump relay. and it is like $130. 3404 posts · Joined 2009 Add to quote; Only show this user How to properly change your BMW E46 fuel pump. Where else can it be? Check your fuel pump when u turn on ur key on to run, u should be able to hear ur pump priming up the fuel system. Can someone please tell me where it is at? My car keeps cranking over and over but will not start. Cars has all new As far as the fuel pressure goes, priming fuel pressure should be around 50psi on these engines. I am not sure if the fuel pump has been replaced by any of the previous owners. Sometimes worked! - Replaced rims and tires from 19" ZCP to base 18" The normal E46 fuel pump is an "on/off" pump driven by the relay. The crank sensor was just replaced and I have checked all of the fuses and the relay under the dash. After that, your fuel system may be clogged or your ignition system problematic or even your emissions e. Sometimes worked! - Replaced rims and tires from 19" ZCP to base 18" My fuel pump does not prime when i turn on ignition and does not pump fuel (checked the valve on the fuel rail after cranking). Fuel pump isn’t coming on. the QFS fuel pump, as listed by OP in his 'How To', which I put in, had a faulty or non existent check valve. Jump to Latest Relay is fine and I can hear both pumps prime although they do prime for a longgggg time! Save Share Reply Quote Like. Anyway, the bottom line is a spinning pump doesn't mean you have fuel delivery. There’s no noise from the fuel pump when I turn the key into position number 2. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Not a bad price for a fuel pump with 99K miles. Different indy mechanic replaced Continental with OEM but not sure about manufacturer. Sadly, the Clogged Fuel Filter: A blocked filter restricts fuel flow, hindering the pump’s priming process. That is supposed to supply power to the fuel pump but It still would not prime or start. Do not run the car below 1/2 tank before you replace the fuel pump. MPG gauge is not based on fuel consumption. A perfect air/fuel mixture depends on the things: fuel pressure, MAP data, O2 sensor feedback, etc. Here’s what I was planning on doing to prime the pump. So recently there has been a few cooling issues and I've replaced the radiator all hoses and coolant but the fuel pump isn't priming anymore. A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Hi, I'm not very electrically minded, any help much appreciated: Trying to diagnose why the car cranks but won't start. Any suggestions would be appreciated. I do not have a solid current draw on the E46 fuel pump, but most fuel pumps draw around 6 Amps when running. Now the pump won't prime at all - tried last night and this morning. So I first used my scanner on the 530i e39 to activate my fuel pump relay, and boom, fuel pump kicks on and primes right away. Now with all that backfill out of the way, it is time for the questions: Is there potentially a mismatch of the dme that is causing this relay to not want to function like normal? my BMW 318 E46 3 series would not start , i could not here fuel pump so searched for fuel pump relays but these were fine it ended up being a fuse for the en Hi all, Long time reader first time posting. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada > No, it isn't $6,000 to repair a fuel pump AND no E46 fuel pumps are NOT wear and tear items that will fail. Come join the discussion about M performance, turbo kits, engine swaps, builds, modifications, classifieds, troubleshooting, maintenance, and more! 2002 e46 m3 smg not starting help! - SMG/Fuel pump currently not priming but was going in and out - Had a leak in the driver front tire which caused car not to start - Open and closed hood, trunk, gas cap, and both doors. Pin 85 does not go to ground, it seems. How to properly change your BMW E46 fuel pump. My fuel pump does not prime when i turn on ignition and does not pump fuel (checked the valve on the fuel rail after cranking). fuel pump relay location? E46 2004 I changed fuel pump last week and even after it still doesnt prime. Problem: Fuel pump will not prime. Checked the fuel pump fuse and it was fine. I thought for sure I couldn't hear the old fuel pump priming when I turned the ignition on but it certainly was which I confirmed after the new one was in. That issue, and the fuel pump not priming are the two main issues I'm seeing. There is power to the fuel pump when it primes but no power to the pump once you start turning over the engine. , 111 Peter Street, Suite 600, Toronto I do not hear the fuel pump priming sound anymore, whenever i unlock the car, or open the door. , 111 Peter Street, Suite 600, Toronto, Customer: e46 cranks but won't start. ) Turn key to position #2 (run) to prime fuel system The E46 system features two pumps. Upon key on, I usually here my fuel pump running so I can adjust pressure, etc. Not positive, but could be a possibility. There will be close to 12 Volts during the prime cycle for about 5 seconds when The main reason behind the fuel pump won’t prime may be a faulty fuel pump, the relay itself, or the internal suction mechanism that creates the air void. Listen for a hum coming from under the rear seat. There is voltage when cranking but no voltage Spike to prime the pump. Not to say its free from defect entirely, but if its priming the system, you are getting fuel up to the filter at least. You do not want to cap this return fuel line. , 111 Peter On an E46, the fuel pump is located in the fuel tank, but is accessed through the top of the fuel tank, which is accessed by removing the rear seat as detailed in JEmric's very fine DIY. The pump is not driven by the engine. 2) Loosing pressure somehow once car is off. The main pump is on the passenger side (fill neck side). After I change it, the car actually ran for 5 miles before it died again. The fuel pump on the e46 is so easy to change, it is probably easier than washing your car. This article explains exactly why your fuel pump not priming and the possible fixes. Good way to diagnose fuel leak: Be in an open area with a fire extinguisher nearby; Do not make any sparks or fire; Remove all covers for access (airbox, engine covers, fuel filter cover, back seat bottom, both fuel tank access panels, etc. Jump to Latest 5. It did not generate any trouble codes. I am having a hard time finding the location of it. This sounds like a really Fuel pump 101 Yes you can retrofit the LPHV pump in the tank with a HPLV. Try changing your fuel filter 1st if you have not done so recently as excessive blockage will cause harmful strain on your pump thereby causing your noise. Whatever it is, it ends up creating erratic behaviour on the car where you’ll see a performance drop or failed crank every time altogether. It is supposed to provide constant 50psi at all speeds, including primed with the engine off, and has no variable output. Faulty Fuel Pressure Regulator: A faulty regulator can lead to excessive fuel pressure, preventing the pump from priming properly. Fuel pump does not appear to get 12V on any of combination of the 4 connector contacts when ignition is turned on. I'm thinking this is a bigger no-start/no-crank issue. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada The lean and misfire trouble codes point to too much air (vacuum leak) or not enough fuel (fuel pump or filter). Pumps are beaucoup bucks. However once it has started it gets a prime voltage for every restart. Comment. 2003 E46 318ci intermittently not starting. Fuel pump will not have constant power applied to it. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada This fuel flow enables the suction jet pump in the left side fuel tank to pump fuel into the right side fuel tank where the electric fuel pump resides. For those wanting to see more of BMW's 4th generation 3 series, the beautiful and timeless E46 Miniaturize yourself and go into the gas tank in a little submarine and put yourself near your fuel pump I want to make sure I don’t run into any issues with the new pump not priming when I first start it. The symptom is crank but not turning over/firing up, especially when temperature is cold (OP is in Seattle, so we are I recently purchased a 2000 328i 5 speed with 170,000 miles. The BMW E46 fuel pump test procedure is very straightforward; it involves testing the fuel pump's electrical supply to make sure it is receiving power, and if it is, verifying it is producing the proper fuel pressure. if u dont hear that noise then ur fuse, relay and pump should be checked in that order, than u should be able to pin point it, but it sounds like ur fuel pump, gl E46 Fanatics Forum is not in any way affiliated with Bayerische Here is a list of work I have done for those that were not following: Fuel system: Fuel Pump (Siemens), Fuel filter (Hengst), Fuel injector O-rings. I also have a 2003 530i with the same engine. The fuel pressure regulator in the fuel filter is controlled by engine vacuum, and only regulates fuel pressure when the engine is running. E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999) E60 / E61 Would pulling the line to the fuel filter, then priming the pump be a good option? I really don't want to go through the hassle of popping the pump right now. Then the fuel pump has about 4. There are many reasons why a vehicle would not start but for this article, I will be explaining to you exactly what's involved in a fuel delivery system, what are some of the E46 Forums. 88. Sounds like a dead fuel pump. This tells me the injectors and ignition coils are ok. I haven't experienced any problems not priming the fuel system after a FF change. The fuel pump relay has 12V going into it, which I measured with a volt meter. I doubt fresh plugs would cause the issue. There's no influence from the O2 sensors to the fuel pump. g. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Manage Consent. , 111 Peter Street, Suite 600 Hello, everyone, I hope you are having a great time and you could help me out with my problem. , 111 Peter Street, Suite 600, Toronto Car: 2000 e46 323i with a 328i engine swap Replaced: Fuel pump, fuel filter, relay. The sound isn't there until the engine starts. Jump to Latest and after a while they told me that the pre-supply fuel pump was faulty and needed replacing. If you find the answer, PLEASE post back as you may help someone else in the future. . Mass air flow sensor tells the engine computer how much air is coming into the engine. I was convinced it was a fuel pump/filter issue. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. If you do not get a prime, either the pump is faulty or there is no power to the pump. Actually, priming the car manually by jumping the pins caused something interesting this weekend, typically doing this will start the car for 10-20 sec and then die off, but during one test, the car stayed running. The freeze frame data shows the code popped at higher RPMs, and that STFT on bank 1 was +22% while STFT on bank 2 was -20%, which is very odd. Fuel pump (and filter) replacement cured all of the E46 (2001 - 2006) If this is your first visit, be sure to check out the FAQ by clicking the link above. Fuel pump should be virtually quiet from inside the drivers cabin. I've checked all the fuses and replaced every one that has something to do with the fuel system, even if they didn't look burnt. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada 325i e46 fuel pump idle hunting rough idle. Fuel pump working with INPA and not priming seems like a software related thing since the ecu triggers the prime. Worn Fuel Pump: Over time, the fuel pump can wear out, reducing its priming capacity. The fuel pump and relay are both good, however I am getting no power to the fuse or the pump. In both cases it may be hard to hear the pump running. 2002 e46 m3 smg not starting help! Jump to Latest - SMG/Fuel pump currently not priming but was going in and out - Open and closed hood, trunk, gas cap, and both doors. gjxxh rvnv wmyt mccjy xmk jcia ugohaa cym oqqei xccaei