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Old Apr 20, 2010 | 10:36 PM
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Default No Spark

No spark is getting to the plugs. Ive checked all connections and dont see any issues. Its for 2005 LS2 motor. Any ideas that Ican check?
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Old Apr 20, 2010 | 10:44 PM
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What car is it in?
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Old Apr 20, 2010 | 10:51 PM
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Its in a 1996 corvette.

The wire harness and ECM were done by current performance wire harness. Not by me. I hooked up everything but my cruise control and I have to mount a coolant temp for my gauge, so that wire isnt hooked up.

I tried to see if I could pull a code and it says it passes. Only thing I can think of is ECM or CPS. But with CPS i should still get a spark right if it wasnt working right?
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Old Apr 20, 2010 | 10:59 PM
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hook up a scanner and see if you can read rpm while cranking, that will tell you if the crank sensor is working. double check grounds for the ecm as well
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Old Apr 20, 2010 | 11:17 PM
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Vats?
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Old Apr 20, 2010 | 11:52 PM
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Originally Posted by HANNY
hook up a scanner and see if you can read rpm while cranking, that will tell you if the crank sensor is working. double check grounds for the ecm as well
I have three grounds total that came on the wire harness and I have 3 that were on the car. Im going to def go thru each strand of harness.
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Old Apr 20, 2010 | 11:53 PM
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Originally Posted by Mez
Vats?
I was thinking the same thing. I ready up and it can kill my starter. But what do they mean by kill it cause mine still rotates?

Last edited by fc_soldier; Apr 21, 2010 at 12:06 AM.
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Old Apr 21, 2010 | 08:44 AM
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The engine won't turn over if its VATS. Do the coils have power?
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Old Apr 21, 2010 | 10:45 AM
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Originally Posted by Mez
The engine won't turn over if its VATS. Do the coils have power?
My tuner said the VATS isnt the issue or wont be a issue. I have the pin out for the ECM to check coils I will do that but I did test for spark at the wires. No spark there.

Also I noid tested the injectors and they are not pulsing at all.
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Old Apr 21, 2010 | 10:59 AM
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Crank sensor?
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Old Apr 21, 2010 | 04:52 PM
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looking into it I got the pin out so I will be testing it today.
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Old Apr 21, 2010 | 07:18 PM
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Found my problem, I have a broken ground Im working on the fix now.Its somewhere in the harness I need to track it down
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Old Apr 21, 2010 | 11:41 PM
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OK even the best are wrong sometimes. It isnt a ground. But I found what I think it is.

I checked the pins on my ecm to my cam sensor. One of the pins instead of the 12 volts is the Low Coolant Level Indicator Signal.
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