What if there's no 2 sec prime from gray wire
What if there's no 2 sec prime from gray wire
Then you don't have power to fuel pump from fuel pump relay.
But if your turning key on and off? Sometimes it will not prime until off for awhile, all ECM/PCM have different timers but 30 seconds should cover them all.
Does your fuel pump relay have an extra Red wire hanging from it with a plug on the end? If so you can run 12 volt Batt power to it to keep fuel pump on while testing.
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
[QUOTE=EagleMark;36357]Then you don't have power to fuel pump from fuel pump relay.
But if your turning key on and off? Sometimes it will not prime until off for awhile, all ECM/PCM have different timers but 30 seconds should cover them all.
Does your fuel pump relay have an extra Red wire hanging from it with a plug on the end? If so you can run 12 volt Batt power to it to keep fuel pump on while testing.[/Q
k so trying to figure out if I had a short somewhere I check the wires. Under dash while doing this the black brain security box light flashed on then off then stayed on then just did this often so I continue feeling There is a short found a. Nic by accident touched w knife n it turns the car over like the starter over k so disconnect batt taped the red ignition wire I'm assuming n hook up batt n n ow no turn I over I even tested starter solenoid w jumper it's good I'm just lost. Now
a 1991 camaro rs didn't come from the factory with a black security box with a light.
you likely have an aftermarket alarm system.
maybe some idiot wired up a fuel pump disable with it.
i'd get that aftermarket alarm out of there, every single car i've ever owned that has one has been a huge source of problems.
K I have no pulse to the injectors what could I do?
Just looked up a 91 F car and it does have VATS enabled... so earlier you said it's not a VATS issue and you have pulse? Now no pulse with Noid light...
Is your key in good shape? Does it have the resistors in it? Did you recently get new keys? Is the key switch worn/loose?
Do you have spark at spark plugs? Even if you do it could still be a faulty EST module or wiring issue at EST in distrbutor.
I'm open to other ideas as well, but these are top 2 for no pulse injectors... could also be a faulty ECM. Are there any error codes set?
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
Bookmarks