The suggestion was to buy a vacuum tester and test it before replacing it.
I would test the fuel pressure next.
I would test the fuel pressure next.
Fuel pressure should be at least 40psi idling, and it should rise 5psi if you disconnect the vacuum line to the FPR. If that is not the case, you need to investigate and/or replace the fuel filter, FPR, or fuel pump.coppertop said:I thought the fuel pressure was not to be under 45- 50 PSI? Is that just pre starting the motor? I was ready to change the fuel pump because my car running is at 35 PSI.:suspense:
The engine tries to start but sometimes it totally fails as if I ran out of gas. Other than that the car runs great on and off highway and even under WOT with five people in the car. Strange huh?eldorado1 said:So it doesn't even try to fire?
And it only happens when it's hot? No stalling or hesitation or anything when it's running?
That's my understanding as well. My point is just that opening the throttle will allow more air in there to burn off the extra fuel that has accumulated. If it's loaded with gas, there might not be enough air to burn it and start. Opening the throttle lets in enough air to burn it properly and start. It's just speculation on my part. Am I wrong?Ranger said:If I am not mistaken, holding the pedal half way down does nothing. Holding it to the floor shuts off the injectors to clear a flooded engine. Other than that, the PCM controls the injector pulse width during crank cycle to my understanding.