Hot start problem, '93 LT1
Thread Starter
1st Gear
Joined: Apr 2002
Posts: 1
Likes: 0
From: DALLAS GA
Hot start problem, '93 LT1
Never have any problems starting when car is cold or warm but if I have been in traffic for a while in hot weather and decide to stop for a few minutes and then start the car, it has issues cranking.
What happens is that it starts, but dies right away. Most of the times I can get it to go after a few tries but yesterday I had to let the car sit for an hour before it wanted to start again.
It is definitely related to a hot engine, but I am not sure where to start looking.
What happens is that it starts, but dies right away. Most of the times I can get it to go after a few tries but yesterday I had to let the car sit for an hour before it wanted to start again.
It is definitely related to a hot engine, but I am not sure where to start looking.
Instructor
Joined: Sep 2004
Posts: 134
Likes: 0
From: Cary NC
I had the same problem with my 92 LT-1, only it took me a year to track this down after my GM dealer gave up. In my car, the ECM had a temperature sensitivity problem, and would detect serial bus errors only at high temperature. I proved this by sticking a bag of ice on top of the ECM every time I had a no start condition. The car would start up again after one minute of ice. I don't want to admit how many times I pulled in to a gas station after a long drive and had to go to the ice machine to get it started. (Corvette owners laughed with me, not at me). I replaced the ECM four or five years ago and have had no problems since.
