Electronic spark Control
Thread Starter
Instructor
Joined: Jun 2007
Posts: 148
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From: Coral Springs Florida
Electronic spark Control
I have a problem with my 1989 corvette. If I start the car and turn it off right after I start it. It won't start till I let it sit for a while. I was told @ a local shop that this was due to the Electron spark Control. The module in the distributor has been replace and he's done all the other tests. Is this possible?
Thanks in Advance,
Lori
Thanks in Advance,
Lori
Tech Contributor
Joined: Jun 2004
Posts: 20,860
Likes: 959
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
I have a problem with my 1989 corvette. If I start the car and turn it off right after I start it. It won't start till I let it sit for a while. I was told @ a local shop that this was due to the Electron spark Control. The module in the distributor has been replace and he's done all the other tests. Is this possible?
Thanks in Advance,
Lori
Thanks in Advance,
Lori
Instructor
Joined: Dec 2004
Posts: 231
Likes: 0
No. The electronic spark control (ESC) is a completely different part of the vehicle electronics from the electronic spark timing (EST) distributor module. They both interface with the computer (ECM), but that is all they have for common. The ESC is merely a knock/noise monitoring circuit that informs the computer when knock is occuring. The computer then decides if it wants to listen to the advice of the ESC. Regardless, the ESC is disabled by software during cranking and idle conditions.
