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Old 01-31-2010, 08:16 PM
mlegg36 mlegg36 is offline
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1995 gmc jimmy wont start

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

Last edited by mlegg36; 02-01-2010 at 10:44 AM.
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Old 02-01-2010, 10:25 AM
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MT-2500 MT-2500 is offline
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Re: 1995 gmc jimmy wont start

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?
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Old 02-01-2010, 10:41 AM
mlegg36 mlegg36 is offline
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Re: 1995 gmc jimmy wont start

Quote:
Originally Posted by MT-2500 View Post
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
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Old 02-01-2010, 10:43 AM
mlegg36 mlegg36 is offline
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Re: 1995 gmc jimmy wont start

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
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Old 02-01-2010, 11:32 AM
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Re: 1995 gmc jimmy wont start

Quote:
Originally Posted by mlegg36 View Post
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?
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Old 02-01-2010, 12:25 PM
rhandwor rhandwor is offline
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Re: 1995 gmc jimmy wont start

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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