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      02-08-2013, 10:05 PM   #14
BMWM.D.
Stupid Idiot
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Drives: E90 335i & C6 Grand Sport
Join Date: May 2009
Location: Santa Barbara

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Quote:
Originally Posted by Spoolin1 View Post
I tried and even told them that I'll be back as soon as the CEL comes on and it goes out, so it's a little ridiculous to not go ahead and change it out beforehand if you know it'll go out eventually.
The problem with that solution is that the 29F3 fault will not usually ever set a check engine light at all. Usually it's a "hard" fault and the low-side fuel pressure reading defaults to a substitute value -- which means the DME doesn't know the true pressure in the low-pressure fuel system. This could affect how the engine starts, how the DME controls the fuel pump, and other possible performance issues.

I'd replace it ASAP if it were my car -- be it out of my own pocket or not.
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