1997 GMC Jimmy Would Not Start Last Night but did this morng.
My Jimmy acted like it was not getting fuel. As a matter of fact it was not. Took a taxi home got a fuel can and poured fuel down the throttle. The car fired and run until fuel was gone.
Left the car there over night, called a wrecker and while waiting for wrecker I thought I'd try to start and the damn thing started.
Any ideas as to what I need to have the repair shop replace?
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Fuel pump, fuel relay, fuel regualator, fuel injectors, camshaft positioning sensor, fuel filter, etc. Need special tools to diagnose properly, do you have them? Doubtfull, I don't have all of them and I've spent thousands on my tools. I can do a guessing game with you but I prefeer not to lead you astray.
i have had problems with the fuel pump relays heating up and loosing contact. it will not trigger a code and the only way to track it is to attatch a fuel pressure gauge to the system and wait for it to die. chances are you will see the pressure drop to 0 psi.
if starter will engage and engine can turn over quickly it should start.
however.. i dont know how you are verifying it has fuel as its a high-pressure FI system.
these systems by GM are VERY finicky and unless within spec precisely it will NOT run. i suspect fuel pump is putting out less than 57# which is min for these.
fuel pump known failure part. if replaced you MUST also replace wire harness at tank as they usually fail internally w/melted wires you cant see through wire sheath. low voltage will KILL the new pump.