BMW BLOG

7 Responses to “Fuel Pumps Part 2???”

1. bsd107 says:

   August 13, 2008 at 3:09 pm

   Can you please verify regarding “that should come in the 09’s”.

   Are the MY2009 E90 335i cars going to get a new fuel pump design from the start of production in September?

   Reply
2. Jake C says:

   August 13, 2008 at 4:26 pm

   bsd107,

   I’m unsure. I have heard reports both ways but nothing concrete. If I receive word I’ll post it up.

   - J

   Reply
3. Rückrufaktion 325i (3,0l Motor mit HPI) : BMW 3er E90, E91, E92 & E93 says:

   August 15, 2008 at 3:29 am

   [...] Beim 335i scheint das Problem nicht vorbei zu sein und runterspielen würde ich es auch nicht: http://www.bmwblog.com/2008/08/13/fuel-pumps-part-2/ [...]

   Reply
4. harry says:

   January 5, 2009 at 9:10 am

   I have had a bmw x6 for 4 months now which I have been extremely happy with. However, the front fuel pump decided to pack up on me last week. The garage had it replaced within 2 days but it has been annoying as it has only done 4500 miles. It seems the issue of BMW and their fuel pumps is still unresolved.

   Reply
5. Jason says:

   June 3, 2009 at 10:34 am

   I have an 09 335i and had to have the high pressure fuel pump replaced at only 3500 miles. I now have 4800 miles on it and the second pump is exhibiting the same issues, so I am going to have to have it replaced as well.

   Reply
6. Doug says:

   June 22, 2009 at 12:10 pm

   I have an 08 535xi. Purchased April 30, 2008 with 15,200 miles. A great vehcile but on Saturday, June 13, 300 miles from home, car wouldn’t start. Turned over, sputtered, and shut down. Flatbedded to dealer, diagnosed high pressure fuel pump problem, and replaced. Ran well until the following Wednesday, June 17 when engine light, reduced power message flashed, and the car shut down while I was traveling about 40 MPH. Flatbedded to dealer who diagnosed and replaced the low pressure fuel pump. I’m wondering if this will solve the problem.
   Based on the previous posts, fuel pumps seem to be a huge problem. Anyone have any problems after the replacement? BMW Assist has been outstanding in providing assistance in getting the car to a dealer, providing alternative transportation, etc. Helped make a difficult ordeal somewhat manageable.

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7. Nate says:

   October 1, 2009 at 2:18 am

   Quote:

   “. . .and is now being advised to keep his gas tank above 1/4 a tank to prevent any limp modes.”

   One problem with electric fuel pumps in the gas tank is they use the fuel in the lubricate and prevent overheating the pump. The pump is also sensitive to fuel sloshing around the pump pickup that occurs when the fuel level is low. They typically put a canister around the primary pump inside the tank to equalize the amount fuel when making turns, accelerating, stopping fast, because these maneuvers cause the fuel to slosh away from the pickup, causing cavitation and overheating.

   Normally you don’t want to run your tank down to empty to prevent problems, but saying you should avoid going below a 1/4 is an admission there may be a tank design issue. If the primary pump runs dry it will adversely affect the HPFP, which could be the basis for the recurring problem.

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