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Old 03-27-2011, 07:05 PM   #11
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The security light acts as it should. Goes on with ignition and shuts off after a couple of seconds. Are the ignition control module and the electron control module the same thing. The metal plate on which the coils sit and the ecm wiring harness goes in, appears to have a crack in it. Are the ICM and ECM the same thing?
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Old 03-27-2011, 07:17 PM   #12
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icm= ignition control module, the part that is under the coils
ecm= electronic control module, generally another name for the cars primary computer
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Old 03-27-2011, 07:37 PM   #13
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Could one surmmize then that a hairline crack in the icm could cause spark arc that could fry the cam sensor?

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Old 03-27-2011, 07:44 PM   #14
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i dont know about that, but if your icm has a crack in it i would replace it and see what you have. sometimes the other codes go away for whatever reason when you get it fixed.
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Old 03-27-2011, 08:24 PM   #15
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Just a little history that might shed some light on the situation.
Previous owner, my roomate, has a studder in excelleration at speeds near 50 which goes away at 60 mph.
He decides to change the coil thinking the problem will go away.
Shortly after, say within a month, we start having these shutdown problems. First it is a short duration where the vehicle will not restart but after waiting 30 minutes Voila.
This progress with the shutdowns taking longer intervals before reset and restart.
Finally, the cam sensor goes. No start, Period.
Mechanic puts in new cam sensor and away we go.
Shuts down and won't start on the same day as picking it up at mechanics.
Mechanic says Oh! we should have changed the crank sensor at the same time. They should be changed in pairs. Re installs new cam sensor and cranksensor without labour charge.
Same day car stalls at idle and it appears that it may be the cam sensor again.

Do you think that my roommate may have cracked the ICM when installing the coils and this is the root to all these evils?
After all three cam sensors indicate to me that there is a short somewhere.

Thanks for your input.
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Old 03-27-2011, 08:30 PM   #16
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Cam sensors really don't cause problems like this, crank sensor ya, but not cam.

If the ICM is cracked then change it. Electrical problems tend to show up when hot, and go away when cold. A crack will also allow moisture in to the ICM and cause all kinds of problems.
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Old 04-20-2011, 11:37 AM   #17
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Okay! In the end, here is what the problem was. A loose connection between the wiring harness and the base of the ICM which when heated during operation made for a bad connection. The expansion of the electronic link caused a short and shut down the car. The portal with the problem was the second one in from the left.
Thanks for all your suggestions. They allowed me to narrow it down to the ICM

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Old 04-20-2011, 11:40 AM   #18
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Thanks for lettus know. I'll mark this as fixed.
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