E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rating: Thread Rating: 69 votes, 4.87 average. Display Modes
Old 06-25-2012, 08:18 AM   #1
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,378
My Ride: '06 330CiC, '03 M5
Save yourself up to $200 and some headaches - Electric Fuel Pump PM

Fuel Pump Failure Epidemic 2012

So I have been around this forum and many of the other BMW forums and what seems to be a reoccurring theme is after about 7 years is most of the E38, E39, E46 and other similar vintage BMW's not newer than 2006 are have failing fuel pumps at a very high rate. Probably a rate of about 100%, as I say its not if, but when!

So a word to the VERY wise, if you have a spare $150 or so and a couple of hours, order yourself a replacement fuel pump, new fuel pump relay and fuel filter and replace them as a PM item.

There are really 2 typical fuel pump related problems.

One is much easier to diagnose than the other. The first situation is where the fuel pump hard fails and does not provide any fuel to the engine at all. This is a pretty cut & dry situation where the problem is rather obvious. A quick and inexpensive way to determine if you are have fuel supply problems is to purchase a $3 can of starting fluid, remove the air filter and give a good, solid, 2 second shot of starting fluid into the intake path/MAF inlet. Then try to start the engine, if the engine starts then almost immediately dies, then you could repeat the starting fluid process, but more than likely the starting fluid test has confirmed you have fuel supply problem. This will most likely be due to a hard failed fuel pump, but it is worth checking the fuses and possibly switch the horn and fuel pump relay just to rule these out as causes of your no start problem.

The seconds failure mode is a soft fail fuel pump that fails to put out enough pressure and/or fuel volume. These are far harder to identify and symptoms may appear to be intermittent or very minor. In some instances the problems may not even seem fuel related. Surging, poor acceleration, possible lean codes, extended cranking when starting, running out of fuel when the gas gauge shows 1/4 of a tank. Soft fail fuel pumps are not really worth diagnosing in my opinion. For the price of the pump and how easy it is to install, I would just plan on replacing your pump if it is more than 7 years old and you have unidentified driveability problems.

In addition to the pump being a problem, fuel filters are very often neglected and over looked and can cause similar issues to a soft failed fuel pump. Please carefully read the following information on fuel filters below.

SPECIAL NOTE ON FUEL FILTERS - since the early 80's fuel filters have much finer filter elements and will catch far smaller particles to protect the fuel injectors. Although many cars have large fuel filters and manufactures claim the filters can be changed every 50-60k miles, based upon field observations, I would HIGHLY suggest replacing your fuel filter every 30k miles. If you open up any of these filters after 25k miles, they are caked with a very fine black film. This black film builds up and starts to restrict fuel volume and pressure and can cause unusual engine performance issues.

While checking and replacing the fuel filter, also carefully check and replace the fuel pressure regulator vacuum hoses and the "F" fitting in the lower intake boot as any vacuum leaks in these hoses and fittings can also cause fuel pressure issues or lean conditions possibly leading to the CEL lighting for unknown reasons.

What seems to be happening a lot lately is folks are not replacing their fuel pumps as a PM item, they are getting stranded, requiring tow jobs and/or dealer or rush fuel pumps to be purchased of up to $400+. Some even have to pay for the install as they do not have the tools on hand or the time.

These pumps are very easy to replace, only need a few basic tools and you do not even need to get under the car. Even if you buy the pump and do not get it installed, keep it in the trunk with the tools to change it and a copy of a DIY until you get around to actually installing it.

It is almost as easy as changing a tire!

So these fuel pumps are kind of like death, taxes and the cooling system.

As the Nike commercial says, "Just Do It!"

Your wife, kids, girl, buddies, employer, wallet and your schedule will all appreciate a PM fuel pump job.

www.bmaparts.com seems to have the best pricing on the fuel pump, not sure about the relay and filter?

I think there is also an online discount code that may still be good, something like SpecE30?? If I find it, I will edit this post with the discount code, but I do not guarantee it will work.

UPDATE: The BMA online discount code is SpecE30. Reports are the replacement pump is under $108 with free shipping. NOTE: As of Aug 2012 it appears the pump prices may have increased slightly to closer to $120??

Note about soft failures on the fuel pump

Some of the fuel pumps are soft failing. This means they work and you do not have issues starting your car, but they can cause intermittent hesitation, misfiring, stalling as well as problems running out of fuel when the tank is about 1/4 full. This is due to low pressure and/or volume causing the siphon or suction jet pump that transfers fuel from one side of the tank to the pump side to not transfer fuel correctly. What happens is you still have fuel in the non electric pump side, but the electric pump side runs out of fuel. This usually happens with 1/4 of fuel showing on the gauge. The hesitation, misfiring and stalling is usually again to low pressure and/or volume from a weak fuel pump. Many have recently replaced their fuel pump & filter as preventative and found that they have crisper throttle response and better overall acceleration, which was not noticed until the pump and filter were replaced. So there may in fact be some hidden benefits to preventatively replacing your fuel pump and filter.

Fuel Pressure & Volume Testing

From the Bentley manual, following are fuel pressure and volume specs for anyone that happens to have a fuel pressure gauge handy and wants to test either the fuel pressure and/or volume. I have not tried this trick, but some have stated that you can use a regular tire pressure gauge to measure fuel pressure in a pinch. BE CAREFUL DUE TO FUEL SPRAY AND FIRE/BURN HAZZARD!!!

Note on most E46 except the M3 the fuel pressure tap or test point (Schraeder valve) is located on the front of the fuel rail under the upper fuel rail/engine cover. This upper fuel rail/engine cover will need to be removed to access this fuel pressure tap or test point.

On the E46 M3, the fuel pressure tap or test point (Schraeder valve) is located on the fuel pressure regulator block, under the drivers side floor board near the fuel filter.

On SULEV vehicles, I have not done a thorough investigation, however, expect the unexpected with these cars. These cars have the stainless steel fuel tank with the sealed fuel pump. This pump actually has 15 year/150k mile warranty and cannot be serviced without replacing the entire fuel tank assembly which I have heard is in excess of $6000!!! Note to self, if you have a SULEV car sell it before 14 years / 140k miles.

Fuel Pressure Specs
All engines except the S54 3.2L M3 - Fuel pressure 3.5 +/- 0.2 bar or 50.76 +/- 2.9 PSI
Residual fuel pressure after 20 minutes - Fuel pressure >3 bar or >43.51 PSI

S54 3.2L M3 - Fuel pressure 5.0 +/- 0.2 bar or 72.5 +/- 2.9 PSI
Residual fuel pressure after 20 minutes - Fuel pressure >4.5 bar or >62.2 PSI

Fuel Volume Specs
All engines 1.12 liter (1.16 qt) for 30 seconds at 12 Volts or while crank


If your car dies on you with 1/4 of fuel, you can sometimes get it started again by adding a few gallons of fuel. But beware you will again likely run out again once the gauge shows 1/4 tank. This may get you going if you are stranded and buy you a bit of time so you can shop your parts and DIY the pump. If you access the Hidden OBC menu (see my signature below for a link regarding the Hidden OBC Menu) you will be able to check the fuel levels in each side of the fuel tank. Note that most all BMW's have a kidney shaped fuel tank with 2 separate fuel level sensors and 2 fuel pumps, siphon/passive pump the drivers side (Left side), which rarely fails, and the primary electric pump on the the passenger side (Right side).

The way these BMW kidney shaped fuel tanks function with the 2 fuel pumps is as follows:

The electric fuel pump on the right side of the tank is constantly running and excess fuel is returned from the fuel filter/regulator back to the left side of the fuel tank. When the fuel enters the left side of the fuel tank if passes through the passive siphon pump and transfers fuel from the left side to the right side of the fuel tank. Once the fuel level drops below about 1/2 tank the left side of the tank quickly drains and all the fuel is kept in the right side of the tank. If you access the Hidden OBC menu you will be able to see the fuel transfer behavior and if you see the fuel level in the left side of the tank higher than the right side of the tank once stabilized, it is likely indicating a soft fail fuel pump. But also note there are also fuel level sending unit failures that can also show similar behaviors. Best to get to know your cars total average range using the trip odometer and then use this along with fuel level to determine when you may have to refuel and/or have a potential problem cropping up.

As for actual fuel pump failures, there are many myths and ideas as to why and how the pumps fail. Also suggestions that the pumps are overheating due to running the tank low on fuel for extended times and possibly the pump drawing air from time to time. But I can say most of these suggestions are mostly myths. The fuel pump is a DC brush motor that is constantly running and circulating cool fuel. The failures of these pumps really have nothing to do with overheating but simple brush and commutator wear just like a starter motor for an engine. What is typically happening is the brush fail to make proper connection with commutator and fail to start. Most of the fuel pump failures tend to happen after the car is shut down, there appears to be a very low percentage of failures while driving.


Also a few helpful hints on fuel pump replacement -

1. Wiring Connector
Many people new to BMW's or German cars may not understand how to release the wiring from the fuel senders. The connectors have a slide release that is a bit tricky but will be clear once you study it for a moment.

See attached pictures of the wiring connector up close both "latched" and "unlatched"

Click image for larger version

Name:	E46 fuelpump connector 3.jpg
Views:	2580
Size:	112.1 KB
ID:	480893Click image for larger version

Name:	E46 fuel sender connector 1.jpg
Views:	3031
Size:	76.4 KB
ID:	480890Click image for larger version

Name:	E46 fuel sender connector 2.jpg
Views:	2753
Size:	69.1 KB
ID:	480891

Pictures courtesy of Frank_E46


2. Make sure you install the gasket on the fuel tank opening lip and not the sending unit
. When you remove the sending unit, the round gasket may come out stuck on the sending unit or you may partially pull the gasket out of the tank when removing the sending unit/fuel pump assembly, however, you need to install the gasket on the fuel tank lip before reinstalling the sending unit/fuel pump assembly, there is a small grove in the side of the gasket that goes around the inside lip of the fuel tank opening. What I actually do is install the sender with the gasket loose on the sender, then once the float is inside the tank, I then put the gasket on the tank lip before seating the sending unit. Also be VERY careful to install the gasket the gasket in the correct orientation when you install it on the edge of the fuel tank. This gasket is asymmetrical and should only be installed in the proper orientation. I believe there is the word "TOP or UP" embossed in the fuel sender gasket. If you install the gasket upside down you will have a fuel leak. Fuel leaks will only likely occur at 3/4 tank or higher. Once below 3/4 tank, you will likely not have any leakage.

If this gasket is not installed properly you may have also have Evap codes triggering as well as anything from a large fuel leak, to just a heavy odor of gasoline.

So be warned, make sure you note the orientation of the fuel sender gasket when you remove the sending unit/fuel pump assembly and reinstall the gasket in the correct orientation and make sure the gasket is fitted inside the tank opening and groove in the side of the gasket is installed on the edge of the fuel tank opening.

3. Fuel level can be an issue. If you are 3/4 tank or below you are in pretty good shape, but if you just filled up and need to change the fuel pump, you will have a problem with fuel spilling out of the tank onto the top of the tank and the driveway or asphalt below. Remember gasoline is not only flammable, it can soften asphalt and be an issue if you happen to be indoors. It is apparently very hard if not impossible to siphon fuel from the tank via the fill pipe, so be forewarned and this may be another good reason to proactively replace your pump on your schedule and not the cars schedule!

4. Be careful about residual fuel pressure in the fuel line before changing the fuel pump or filter. If your pump failed and your car will not start, you likely will not need worry about residual fuel pressure, however, if the car still runs and you plan on changing either the fuel pump or fuel filter, it is wise to remove the fuel pump fuse, start the car and let it idle until it dies. If you plan on removing the fuel pump, you can disconnect the wiring connector to the right side fuel sender and start the engine and let it run until it dies. NOTE, if yo disconnect the fuel sender, you may end up with some trouble codes for the fuel sender and you fuel level and mileage figures may be WAY off until you fill the fuel tank. The trouble codes will not likely show up with a standard ODB scanner, however, INPA, SSS or BMW Scanner may read these errors. Just make a note if you do run the engine with the fuel sender disconnected in case you see any codes, you likely forced them to be triggered. This is way you can pull the fuel filter or pump without a high pressure spray of gasoline. You will still likely get some fuel leakage, but hopefully not under pressure. It might also be wise to remove the fuel filler cap to also release any residual pressure in the fuel tank, but suggest you reinstall the cap before removing the fuel sender/pump combo.

Additionally I have no hard data, but it appears the 2002 and newer cars may have more of an issue with the pump life as compared to the very early E46's? Also case in point, many of the newer turbo BMW 3 series have had a series of fuel pump failures while most of these cars were still under warranty. So just making the comment that the pump design can possibly influence life expectancy.

Do not say you have not been warned!

Denial is not an option, as you will get a rude dose of reality.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299

Last edited by jfoj; 12-04-2012 at 06:05 PM.
jfoj is online now   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 06-25-2012, 10:21 AM   #2
Mango
A full five stars, son
 
Mango's Avatar
 
Join Date: Mar 2006
Location: Southern California
Posts: 22,785
My Ride: M54B30
Good post. This absolutely needs to be done. Anybody who disagrees, step up. There is no reason not to do this.

There should be a popup that asks a series of questions:

Have you JFOJ'd in the past 60,000 miles?

Have you replaced your entire cooling system in the past 60,000 miles?

Have you replaced your fuel pump, fuel pump relay, and fuel filter in the past 60,000 miles?

Have you replaced your voltage regulator, battery in the past 60,000 miles or five years?

If the person answers 'no,' a big slap machine reaches out of the computer screen and slaps the offensive person in their face. If the person answers 'yes,' proof must be submitted and approved by JFOJ. Then and only then can they deserve to proceed to the forums.

Anything short of doing any of the above and you might as well be wearing a shirt that says "I love to be stranded!" cause that's pretty much what you're wishing for when you don't maintain critical parts of your car.
__________________
A lifetime free of problems if you follow my guides
Cooling | Maintenance | Suspension | Vacuum | Supreme Reliability | Details

OVER A MILLION VIEWS
Mango is offline   Reply With Quote
Old 06-25-2012, 10:41 AM   #3
ryanwhite74115
Registered User
 
Join Date: Jun 2005
Location: Raleigh, NC
Posts: 1,779
My Ride: 2011 Hyundai Sonata
Wow...175,000 miles, been on the forum for years. Never knew the fuelpump was that prevalent of an issue.
__________________
(\ /) or \(`' )/
( . .)
c('')('')
ryanwhite74115 is offline   Reply With Quote
Old 06-25-2012, 10:44 AM   #4
Mango
A full five stars, son
 
Mango's Avatar
 
Join Date: Mar 2006
Location: Southern California
Posts: 22,785
My Ride: M54B30
All fuel pumps fail regardless of make/model/type of car. YMMV depending on how you drive, conditions, etc. What may last 175k to you may last 60k for someone else. In any case, not replacing it is just rolling the dice.
__________________
A lifetime free of problems if you follow my guides
Cooling | Maintenance | Suspension | Vacuum | Supreme Reliability | Details

OVER A MILLION VIEWS
Mango is offline   Reply With Quote
Old 06-25-2012, 10:45 AM   #5
scrace
Registered User
 
Join Date: Aug 2006
Location: Maryland
Posts: 700
My Ride: 03.5 M3
Any explanation as to why it fails at this certain milage? I have a hard time throwing money into parts just because, without have some fundamental reason why they are all failing.

It seems a bit paranoid, because if I'm going to keep a spare fuel pump in my car, why not the whole cooling system, etc.
__________________

2001 Topaz Blue 325Ci 64-120k miles SOLD
2003.5 Silver Gray M3 70k miles
scrace is offline   Reply With Quote
Old 06-25-2012, 10:51 AM   #6
Mango
A full five stars, son
 
Mango's Avatar
 
Join Date: Mar 2006
Location: Southern California
Posts: 22,785
My Ride: M54B30
Quote:
Originally Posted by scrace View Post
Any explanation as to why it fails at this certain milage? I have a hard time throwing money into parts just because, without have some fundamental reason why they are all failing.

It seems a bit paranoid, because if I'm going to keep a spare fuel pump in my car, why not the whole cooling system, etc.
You don't keep a spare in your car, you replace the part.

And there's no set mileage. That's the whole reason why you replace it. You never know when it's going to go. And it's usually not on your schedule
__________________
A lifetime free of problems if you follow my guides
Cooling | Maintenance | Suspension | Vacuum | Supreme Reliability | Details

OVER A MILLION VIEWS
Mango is offline   Reply With Quote
Old 06-25-2012, 10:57 AM   #7
sunnyjay
Registered User
 
Join Date: Nov 2011
Location: USA
Posts: 189
My Ride: 01 330i
Quote:
Originally Posted by scrace View Post
Any explanation as to why it fails at this certain milage? I have a hard time throwing money into parts just because, without have some fundamental reason why they are all failing.

It seems a bit paranoid, because if I'm going to keep a spare fuel pump in my car, why not the whole cooling system, etc.
Well a fuel pump is a basically a electric motor and they do burn out with age like any motor. The bushings wear inside the motor and they lose contact with armature or a burnt armature. End result is a failed fuel pump.
sunnyjay is offline   Reply With Quote
Old 06-25-2012, 11:15 AM   #8
hummer
Registered User
 
Join Date: Apr 2003
Location: Haverhill, MA
Posts: 3,323
My Ride: 2001 330CI
No, No, No!
There are always two or more schools of thought when it comes to issues like these. A better service to members would be a poll to illustrate experience with these items rather than the sky is failling, replace everything now approach!
My experience:
Fuel pump - 10 years 160K, relay still Ok at 175K
Battery same. Alternator suffered a bearing failure at approx 120K
Cooling system - original tank, hoses and radiator still in at 175K
- water pump replaced when it actually started leaking at 114K

As you can see, if I had gone into panic mode at 60K, I would have spent a whole lot of money for nothing. The only thing on the above list to be changed regularly is the fuel filter. So, for a commuter like mine the experience may be totally different from a ham fisted tire burning drifter.
hummer is offline   Reply With Quote
Old 06-25-2012, 11:20 AM   #9
jcns
Registered User
 
Join Date: Oct 2008
Location: California
Posts: 1,536
My Ride: California
some data
my e30; fuel pump died with about 190k miles (about 7-8 years)
my e46, fuel pump died with about 140k miles (10 years)
inexpensive fix and takes only about 30-45 minutes.
jcns is offline   Reply With Quote
Old 06-25-2012, 01:06 PM   #10
Mango
A full five stars, son
 
Mango's Avatar
 
Join Date: Mar 2006
Location: Southern California
Posts: 22,785
My Ride: M54B30
Quote:
Originally Posted by hummer View Post
No, No, No!
There are always two or more schools of thought when it comes to issues like these. A better service to members would be a poll to illustrate experience with these items rather than the sky is failling, replace everything now approach!
My experience:
Fuel pump - 10 years 160K, relay still Ok at 175K
Battery same. Alternator suffered a bearing failure at approx 120K
Cooling system - original tank, hoses and radiator still in at 175K
- water pump replaced when it actually started leaking at 114K

As you can see, if I had gone into panic mode at 60K, I would have spent a whole lot of money for nothing. The only thing on the above list to be changed regularly is the fuel filter. So, for a commuter like mine the experience may be totally different from a ham fisted tire burning drifter.
People with our school of thought never become stranded. Of course you can drive your car til it rots into the ground. Just because your car starts and drives doesn't mean you've done yourself any favors. Don't maintain your car and at that point, it's a rolling pile of rotted rubber and worn parts

I am proud to say that my car is almost completely rebuilt or refreshed from the ground up and the results show the moment you turn the key to the moment you shut the door. Very, very pleased. Confidence and peace of mind is worth every penny.
__________________
A lifetime free of problems if you follow my guides
Cooling | Maintenance | Suspension | Vacuum | Supreme Reliability | Details

OVER A MILLION VIEWS
Mango is offline   Reply With Quote
Old 06-25-2012, 01:16 PM   #11
FenderGuy05
OEM ///Member
 
FenderGuy05's Avatar
 
Join Date: Oct 2011
Location: Daly City
Posts: 944
My Ride: 2002 BMW 325i
Quote:
Originally Posted by hummer View Post
No, No, No!
There are always two or more schools of thought when it comes to issues like these. A better service to members would be a poll to illustrate experience with these items rather than the sky is failling, replace everything now approach!
My experience:
Fuel pump - 10 years 160K, relay still Ok at 175K
Battery same. Alternator suffered a bearing failure at approx 120K
Cooling system - original tank, hoses and radiator still in at 175K
- water pump replaced when it actually started leaking at 114K

As you can see, if I had gone into panic mode at 60K, I would have spent a whole lot of money for nothing. The only thing on the above list to be changed regularly is the fuel filter. So, for a commuter like mine the experience may be totally different from a ham fisted tire burning drifter.
Honestly, I have to disagree. Maybe it's because I only have one car so when something fails...I get totatally screwed. If I had another car I wouldn't be so concerned with keeping mine running. I think that given the fact that the car is averaging around 10 years old is enough.

It isn't always miles that wears parts, it's age. My fuel pump actually died on me yesterday, no start, straded in a grocery store parking lot. (Thank god for AAA) I have ordered my part and am waiting to change it myself, the fuel pump and filter were on my list for the next round of maintainance. Luckily, it was a Sunday and not this morning before work.

My bottom line is that PM is the best thing you can do with our e46, I just spent around 200 dollars for new oring, pump and fuel filter, and that is going to buy me peace of mind for a while.
__________________
FenderGuy05 is offline   Reply With Quote
Old 06-25-2012, 01:17 PM   #12
Mango
A full five stars, son
 
Mango's Avatar
 
Join Date: Mar 2006
Location: Southern California
Posts: 22,785
My Ride: M54B30
Quote:
Originally Posted by FenderGuy05 View Post
Honestly, I have to disagree. Maybe it's because I only have one car so when something fails...I get totatally screwed. If I had another car I wouldn't be so concerned with keeping mine running. I think that given the fact that the car is averaging around 10 years old is enough.

It isn't always miles that wears parts, it's age. My fuel pump actually died on me yesterday, no start, straded in a grocery store parking lot. (Thank god for AAA) I have ordered my part and am waiting to change it myself, the fuel pump and filter were on my list for the next round of maintainance. Luckily, it was a Sunday and not this morning before work.

My bottom line is that PM is the best thing you can do with our e46, I just spent around 200 dollars for new oring, pump and fuel filter, and that is going to buy me peace of mind for a while.
You mean your fuel pump didn't send you an e-mail asking if yesterday at the grocery store was a good time to fail?? Shocking!
__________________
A lifetime free of problems if you follow my guides
Cooling | Maintenance | Suspension | Vacuum | Supreme Reliability | Details

OVER A MILLION VIEWS
Mango is offline   Reply With Quote
Old 06-25-2012, 01:25 PM   #13
FenderGuy05
OEM ///Member
 
FenderGuy05's Avatar
 
Join Date: Oct 2011
Location: Daly City
Posts: 944
My Ride: 2002 BMW 325i
Quote:
Originally Posted by E46Mango View Post
You mean your fuel pump didn't send you an e-mail asking if yesterday at the grocery store was a good time to fail?? Shocking!
Unfortunately it didn't, that would have been nice.

One thing I can say is thank god for these forums, because I would have been at a total loss if my last car had not started up, but because I have read so much on these fuel pump failures, I knew what to look for and had it diagnosed by the time the tow truck arrived.

What are the chances the day after a thread like ths pops up!
__________________
FenderGuy05 is offline   Reply With Quote
Old 06-25-2012, 01:28 PM   #14
///MPR77
Registered User
 
Join Date: Dec 2007
Location: Los Angeles
Posts: 1,852
My Ride: 02 ///M3 Tri-Ped
My fuel pump was nice enough to fail right outside of Bavarian Auto Parts.
190k

I went in to pick up some bumper trim, came back out, and fuel pump failed.

Since this is a common issue; Bavarian had the part in stock, and I replaced it out front in 20min. And was on my way.

If I had only checked my email prior to leaving that day, I would have seen the message from my fuel pump saying: "today is the day sucka"

Seriously, though this will fail at some point, so replace it if you haven't by at least 150k
__________________

Bewahren Sie ihre ultimative fahrmaschine
///MPR77 is offline   Reply With Quote
Old 06-25-2012, 01:32 PM   #15
FenderGuy05
OEM ///Member
 
FenderGuy05's Avatar
 
Join Date: Oct 2011
Location: Daly City
Posts: 944
My Ride: 2002 BMW 325i
Definitely at least by 150k, I just hit 100k and it failed. Age kills too!
__________________
FenderGuy05 is offline   Reply With Quote
Old 06-25-2012, 02:05 PM   #16
Solidjake
Zero. Oil. Leaks.
 
Solidjake's Avatar
 
Join Date: May 2008
Location: NYC
Posts: 22,375
My Ride: 2002 330i
116k on my car and zero issues with my pump. I did change the filter though 30k miles ago.
__________________
WTB FACELIFT SEDAN TITANIUM SILVER DRIVERS FENDER

Youtube - Electric Fan Swap - Projector Retrofit - Bulb Guide - NY to LA cross country
Solidjake is offline   Reply With Quote
Old 06-25-2012, 02:11 PM   #17
Brinkley
Registered User
 
Join Date: Dec 2006
Location: asheville NC
Posts: 1,502
My Ride: 99 328i, 07 z4 3.0
160k and 14 years on mine
Brinkley is offline   Reply With Quote
Old 06-25-2012, 02:29 PM   #18
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,378
My Ride: '06 330CiC, '03 M5
Mileage is really not a factor with fuel pumps, its hours. Unfortunately there is really no hour meter for the pump.

Case in point, if you live in a major metro area and commute daily, you will not rack up much mileage, however, the pumps will have lost of time on it. So if your commute is 10 miles in stop and go traffic and it takes you 45 minutest to get to work, this is very much different than driving 60 miles in 45 minutes. This is a difference of 6 times the mileage for the same length of time.

I can tell you the E39 M5 are dropping pumps at a very similar rate to the E46. Mine went before I bought the car at about 70k miles in about 7 years.

I have replaced 2 other E39 M5 pumps withing about 8 years. One had about 100k miles, the other about 120k miles.

It seems 7-8 years is about the problem window.

If you have more than 8 years on your pump, thank the fuel pump gods and keep a pair or tennis shoes in the back of the car.

I have a neighbor that had an E46 that failed at about 8 years, 110k miles.

I can assure you that other than hard failures there are a number of soft failures that cause the suction jet pump to perform poorly and drain the passenger side tank and cause you to run out of fuel.

What gets me is some owners proactively replace their battery every 3-4 years, which is a good thing, but for slightly more than a cost of a battery they will not replace their fuel pump.

If your battery dies, usually you can jump start or roll start the car, not so easy with a bad fuel pump!

I can say over the past 3-4 weeks it seems that about every 10-15th post is about a fuel pump failure.

Again, the other way to verify if your pump has been replaced previously it to pull the rear lower seat, check the rubber sound proofing horse shoe shaped piece on the passenger side and see if the 4 or so connection tabs have been cut, if not, you likely have your original fuel pump.

It just seems that most of the pump failures are very inconvenient and have cost owner more money due to no being able to shop parts and possibly labor for someone else to install your pump.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
jfoj is online now   Reply With Quote
Old 06-25-2012, 02:49 PM   #19
Gus330vrum
Registered User
 
Join Date: Mar 2011
Location: atlanta
Posts: 1,351
My Ride: 330ci
Quote:
Originally Posted by Solidjake View Post
116k on my car and zero issues with my pump. I did change the filter though 30k miles ago.
Jake, you better keep fuel pump at home

Mine went out at 110k ..

Bmaparts.com sold me FrEE fuel pump on big deal I got...

Sent from my ZTE-X500
Gus330vrum is offline   Reply With Quote
Old 06-25-2012, 07:59 PM   #20
trive2
Registered User
 
Join Date: Sep 2011
Location: Brisbane
Posts: 1,100
My Ride: 1989 BMW 535i
Ahahaha I've been meaning to get a fuel pump just in case for a couple of months now. I'm on 90,000 miles on the original pump and I've run out of fuel about ten times in the last six months.

Buzz of deathhhh.
__________________
trive2 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 01:30 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use