QuestionMy 94 Chevy 350CI will run from 10 minutes to 3 days than it shuts down and always restart after 3hours (sometimes less). The problem is fuel related, if I dump a little gas into the throttle body it'll start and run for a few seconds. (No Codes)
I've added gas line antifreeze, changed the fuel filter, oil pressure sensor, fuel pump relay, & fuel pump, needlessly.
When it stalls the fuel system pressurizes (13 lbs.) & the pump shuts off but the engine won't start. The injectors don't inject fuel.
I'm thinking that the computer isn't send that command but don't know why. After a 3 hour rest it starts.
My local dealer is also at a lost after I've paid them over $400.
Any suggestion would be appreicated.
AnswerFirst try disconnecting the throttle position sensor. The engine will run without it, but not as well. But if it is shorted, it could be sending a clear flood signal to the ecm.
Running without it will set a code, and turn the light on, but it should clear itself after reconnecting.
The tps can, and should be tested with a good ohm meter.
Crank sensor or associated wires could also be the problem, and it could be a heat induced short or open, that cools down while sitting.
Van
