LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

New ICM, still not starting!

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Old 08-01-2003, 04:26 PM
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Location: Joliet Illinois
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New ICM, still not starting!

I installed a new icm and made sure all my sensors were hooked back up. Checked the fuses again to make sure they were all good. I already made sure the wires were all connected, and the plugs were tight, and the car still cranks and cranks, but will not start. I just cant see the opti taking a dump just like that. Last time(2 years ago) it just would backfire, but it started. What are my other options? I am about to have it towed to a shop, god im gonna hate that. Any more input b4 i do this would be great. Thanks
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Old 08-01-2003, 04:49 PM
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its the opti again...
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Old 08-01-2003, 05:24 PM
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Put the e brake on, and in Neutral. Make sure it is in N.

Run a wire from the small post on the starter, to the + battery terminal and see if it fires. If it does you safety switch is bad.

If that fails, you can always try a little starting fluid. That will start the car even if you are getting very little spark and fuel for a sec.
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Old 08-01-2003, 06:13 PM
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Two other culprits could be the coil, or the coil wire to the Opti. I feel your pain, I'm in the same situation, and have gone through $300 in fixes without solving the problem (going to try coil wire tonight). I'm going to try the test above tonight as well. Good luck!
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Old 08-01-2003, 07:40 PM
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Have you run through this test ?
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