Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
hello, my name is ***** ***** I will be glad to assist you. please allow me a couple of minutes to gather some basic info.Roy
ok, I want to start at the pump.
what is the exact fuel pressure key on engine off and while running???
the fact tht it fired right up with a squirt of fuel indicates the injectors are being commanded on by the pcm. your reading may be wrong on your scan tool.
are you there
are there any codes stored???
when you turn off the truck, what did the fuel pressure do??? what was the reading???
what I am after is too see if the pressure bleeds off and it looses prime
but you get signal when it runs???
the fact that you squirt fuel and it fires indicates a fuel delivery issue
crank sensor. I dont think you understand. if you squirt it with fuel, they are getting signal to pulse because it stays running. if it started and died, then we have a injector control issue
your missing the point.
I am opting out and someone else will be along shortly
new expert here did you still need help ?
my name is ***** ***** am another expert Roy opted out of the question
so key ON engine OFF the PSI with a good fuel pressure gauge is 53 PSI ?
with it jumped and it reading 60 PSI it will still do this ?
if you unplug the TPS and the ECT sensor with both of those unplugged will it still do this ?
yes it is more than likely the pump defective
BUT before you change it run a new power and a new good ground to the pump at the connector at the top of the tank if it still has 50 the pump is bad
if the psi is good then the ground or the grey power wire is bad from the relay to the pump
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