CS05 Engine Stalling

[ericalan]

Hey everyone,

I have a 2005 S with about 135K on it (almost all me :D ) and the engine is stalling out, almost as if it is being fuel starved, about 20-30 seconds after starting. For the first 20 seconds I can rev it and move it (small distance!) with what feels like normal power, but then it slowly (5-10 secs) had lower idle, becomes less responsive and then stalls.

All maintenance done, fuel/air filters changed, nearly full tank... My thought is the fuel pump...

Ideas?

If you also think fuel pump, anyone change it yet?

Thanks in advance!

Eric.

[a17322a]

it sounds like a fuel pump, try this thread http://www.renntech.org/forums/topic/26697-hesitation-starting/page__p__141028#entry141028

[ericalan]

it sounds like a fuel pump, try this thread http://www.renntech....028#entry141028

Thanks, actually sounds very straight forward!

E.

[wvicary]

There are two fuel pumps. It's the main fuel pump which is the left pump that needs replacing. Change the fuel filter at the same time.

[deilenberger]

wvicary - what is the "logic" on which pump is running?

I know if you remove the fuse for one pump - the other one will run when you start the truck.. and vice-versa.. (this is handy for determining which pump is kaput..)

I thought the idea was to have two pumps since the tank is a saddle tank (two chambers with a high connecting passage between them) and one side will run low so the other side picks up, plus on a steep sideways incline gas will run to the lowest side of the tank, leaving the pump exposed on the other side..

[ericalan]

Thanks all for the comments...

It was the left side fuel pump... Diagnosed via the pulling of the fuses method...

I ran totally out of time and needed the vehicle back, so actually went to the dealer, price was not TOO bad :huh: , but the convenience was there...

They have not had a lot of these go bad yet, so the writer was curious as to how I diagnosed it... :king: Thanks again everyone!

E.