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

Possible Bad ICM?

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Old 01-07-2011, 11:52 PM
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Default Possible Bad ICM?

well, i was driving down the highway and my car suddenly dies. it would not start back up. it turns over but does not start. i popped the hood to see if something came loose somehow but everything seemed alright. no loose wires/hoses, no burning smells. i tried to get it to go into limp mode, but the car would not start at all. the rail was getting gas so i doubt its a pump or anything like that. im fairly certain its either the opti or the icm. the car showed no signs of problems before, however, which makes me think it might be the icm. waited nearly an hour for the tow truck to get there, i was hoping the icm would have cooled and allowed me to start it, but still nothing. anybody have an idea of what this could be?
Old 01-08-2011, 12:16 AM
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Did you check the ignition fuse?
Old 01-08-2011, 12:23 AM
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yupp, i checked all of the pertinent ones
Old 01-08-2011, 12:29 AM
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Any codes? Have the PCM scanned...not all DTCs set the SES light.
Old 01-08-2011, 12:51 AM
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Some auto parts stores will test the coil and ICM for free; its worth a shot.
Old 01-08-2011, 10:39 AM
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Autozone does test the icm even if they tell you they don't, the same thing happened to me going down the highway, runnin like a raped ape and then nothing.
Old 01-09-2011, 07:13 AM
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had a bad coil do the same thing



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