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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.

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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.

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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..

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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.

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