'93 won't start when hot
Thread Starter
Intermediate
Joined: Jun 2013
Posts: 46
Likes: 0
'93 won't start when hot
I just bought a '93 and it appears that the ccm stops sending data when the car is hot. ccm replaced and problem still continues.
car is at chevy dealer.
thanks,
I am new to the forum
mark
car is at chevy dealer.
thanks,
I am new to the forum
mark
Thread Starter
Intermediate
Joined: Jun 2013
Posts: 46
Likes: 0
Intermediate
Joined: Jul 2013
Posts: 44
Likes: 0
I had the same problem with a 1990 corvette. Would not crank once it got hot. Checked the injectors and they checked OK, cold. Check them once the engine warmed up and one was totally dead. Replace the injectors and it is cranking and running fine.
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Burning Brakes
Joined: Apr 2009
Posts: 1,185
Likes: 33
From: Charlotte Michigan
I had a problem on my '93 and thought it was the opti and it was the ICM. I put in a new one in and a coil. I also installed a nylon washer to space the coil bracket from the head so it would not absorb as much heat from the engine, Not enough lubricant on the back of the ICM can cause the unit to go bad, thus making it work ok when cold but not when it gets hot.
Advanced
Joined: Jul 2011
Posts: 80
Likes: 0
93 Hot Start issue
Thanks so much, I was very much in need of some direction on this and will certainly check the ICM and Coil out. I know the coil looks like it has had better days and may even be original for all I know. Thanks Much!