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1995 Grand Prix will not start


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Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 5, 2009, 11:29 AM

Post #26 of 33 (1328 views)
Re: 1995 Grand Prix will not start Sign In

No, you don't have to take anything off. Simply unplug any one of the injectors and plug the bulb into the plug.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



jdberry
User

Jul 5, 2009, 11:38 AM

Post #27 of 33 (1320 views)
Re: 1995 Grand Prix will not start Sign In

OK
The plugs to to the injectors are under the plenum pointing inward to the engine, but I'll give it a try.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 5, 2009, 11:40 AM

Post #28 of 33 (1316 views)
Re: 1995 Grand Prix will not start Sign In

It's done all the time on that engine.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



jdberry
User

Jul 5, 2009, 12:13 PM

Post #29 of 33 (1310 views)
Re: 1995 Grand Prix will not start Sign In

I only checked no. 1 injector, but I do have a flashing light when cranking the engine. Do I need to check any other injector?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 5, 2009, 12:20 PM

Post #30 of 33 (1306 views)
Re: 1995 Grand Prix will not start Sign In

It would be a good idea to check one more but if you still have nothing, then you need to test for power arriving at one side of the injector with the key on. If you verify power at the injector, then you have a problem with the crank sensor, it's related wiring or the PCM itself.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



jdberry
User

Jul 5, 2009, 12:25 PM

Post #31 of 33 (1301 views)
Re: 1995 Grand Prix will not start Sign In

I do have a flashing noid light while cranking the engine. This is good right?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 5, 2009, 12:29 PM

Post #32 of 33 (1293 views)
Re: 1995 Grand Prix will not start Sign In

Sorry, I misread your last response. Yes, that would eliminate anything to do with the crank sensor. Things are pointing to an ignition module or related wiring. Unless you can physically see a problem with maybe to pins at the module or the wiring somewhere, your going to need a lab scope for any further testing. At least you eliminated the crank sensor.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Jul 5, 2009, 12:29 PM)


jdberry
User

Jul 5, 2009, 12:46 PM

Post #33 of 33 (1287 views)
Re: 1995 Grand Prix will not start Sign In

I thought the ignition module from the beginning and have already replaced it. Even took the new one back and had them test it to make sure it was good. If something show bad with a scope could the problem be with the PCM? I have tried a different (not new) one with same results, but could have gotten a bad one. I will double check the connectors to the ignition module, especially the wiring to the PCM. Thanks






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