1995 gmc jimmy wont start


mlegg36
01-31-2010, 09:16 PM
I just put a engine in my jimmy it wont start i am geting spark but know injector pulse. If i spay starting fulid in the intake it fires wright up and shuts off. What whould cause no injector pulse

MT-2500
02-01-2010, 11:25 AM
What engine code and what is fuel pressure?
TB or MFI fuel injection?

All wiring hooked up and old or new flat top type dist?

Any security lights or after market theft alarms/remote starts?

mlegg36
02-01-2010, 11:41 AM
What engine code and what is fuel pressure?
TB or MFI fuel injection?

All wiring hooked up and old or new flat top type dist?

Any security lights or after market theft alarms/remote starts?

It has 60psi of fuel prus all wires are hooked up. If i run power to the injector from the computer hook up you can hear it turn on

mlegg36
02-01-2010, 11:43 AM
the fuel prus is 60psi all the wires are hooked up.If i run power to the injector from the computer hook up it works

MT-2500
02-01-2010, 12:32 PM
the fuel prus is 60psi all the wires are hooked up.If i run power to the injector from the computer hook up it works

What engine code?
TBI or MFI fguel injection?
Flat top or old dist?
Was the engine you put in the same year or different year?

Please Explain
Quote.
If i run power to the injector from the computer hook up it works.

Hae you checked for 12 volt power to injectors key on.
Like fuse to them?

rhandwor
02-01-2010, 01:25 PM
You can go to http://www.alldata.com/ Purchase a years subscription around $29.95. They have good wiring diagrams. Ohm each wire from the computer to the injector. The computer usually pulses the ground. I assume the power comes from a fuse maybe a relay also. Use a 12 volt test light or DVOM and check for power to injector. As the injector should have constant hot the test light is attached to battery ground. It should light on one side.
Tell us if you have power or no ground. If both look at a bad plug on the back of the engine.
I'm just restating in different words what MT-told you to do.

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