Try replacing your fuel filter. It should cost you less then $10, and it will be very easy to change. They should be replaced once a year anyway. If you have not done so, that may be your problem. After that, check the fuel pressure with a fuel pressure gauge,$40. Low pressure may indicate a faulty fuel pump.
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Jun 23, 2007 - 20 posts - 16 authors
Engine dies if I dont keep foot on the gas The Garage. ... foot on the gas the RPMs immediately drop to zero and the whole car dies. ... In that case the throttle body just had enough gunk on it that it was ..... My battery died two days ago and I got a boost but it stalled immediately after taking my foot off the gas.
Check the fuel pump pressure using a fuel pump pressure guage. It would not necessarily be unheard of to have a new, but bad, fuel pump. No or low pressure, then take the pump back and get another one.
It sounds like that when they tuned up the vehicle they may have broken a vaccum line on the motor. What you need to do is check all the vaccum lines on the motor and look for one that is off or is still on and has a crack running down the side on it. This happens quite frequently on older vehicled where the lines have dried out from age and you move them and they crack without you even knowing. The other option is that when they tuned the car up they lowered the idle too much and it worked ok while there but in a few days the ports for the idle start to clog back up and then the car stalls at low idle. My bet would be that you have a vaccum line that is either off or cracked. Good Luck, RAC
You may have a vacuum leak. My problem was with the L-shaped rubber hose at the top of the engine near the firewall. It had collapsed and dry-rotted. Replaced it and my truck runs like a gem. I believe it was fouling out my coils on plugs. This may not work, but would not hurt to try. Good Luck!