LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Randomly shuts off finally have codes. What do they mean!!

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Old 06-30-2012, 08:22 PM
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Default Randomly shuts off finally have codes. What do they mean!!

Ok guys I have been fighting a problem with my car since november, the car will randomly shut off for no reason and I could never get any codes. I have been running Bobs LTCC for three years now and have recently replaced the opti spark hoping that was the problem. Well I left the car running and it randomly shut off on me and this time I got codes, the codes
I got were 16,18 36, 41, and 42. What does this mean, could I have gotten a bad optispark.
Old 06-30-2012, 08:28 PM
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16 is low res and more then likely is opti. 36 is also opti related. Sounds like you got a dud.
Old 06-30-2012, 09:50 PM
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Probably opti or it's harness.
Old 06-30-2012, 10:36 PM
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Thanks guys, I was thinking the same thing but I always buy ac delco units and never had a problem.
Old 06-30-2012, 10:55 PM
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Mt opti harness was fucked up and did this to me about 5 times before i figured it out, never had an opti do that, usually they wont idle for **** or give you a high RPM miss under load. I would check the harness before you blame a opti.
Old 06-30-2012, 11:22 PM
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Well the harness is brand new along with the opti, but I guess since the harness is cheap enough I can get another one.
Old 06-30-2012, 11:25 PM
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I should add that my problem only occurs when the motor is warm or has been running for an extended period of time
Old 07-01-2012, 01:09 AM
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I had a ICm act up like that also.
Old 07-01-2012, 07:56 AM
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Is the Delphi Opti the same as the AC Delco?
Old 07-01-2012, 08:40 AM
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Yes the delco unit is the same as the Delphi unit, with the LTCC unit there is no ICM anymore.



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