Ignition Module
Thread Starter
Advanced
Joined: Apr 2007
Posts: 66
Likes: 0
From: Dallas TX
well the car runs get then all the sudden it will die and it will crank back an run,,,I have replaced the coil the opti new plugs new wires new fuel filter new fuel pump new water pump...and 2 new injectors,,,it is like it just looses fire and quiets so I figure it must be the ignition module....
Instructor
Joined: Dec 2004
Posts: 231
Likes: 0
the car could start to run crappy as in a "miss" and then, just frankly not start at all. if it is indeed bad, you won't be driving it anywhere. i would get the ignition module anyway and if it isn't bad, you'll have a spare handy in case you are "stranded" and that calls to be the problem. follow the directions and remove all the old dried up thermo-conductive gel that is packaged with the new module, apply the new gel, and go from there. i keep a spare in my car as well as a spare cap, a few wires, and a few other things to get me up and running back home in case of a breakdown...
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 207
From: Orlando FL
I would agree with badabing9 and with your symptoms the only reliable check is by substitution. Any bench check of the unit will probably not show anything up.
With your problem, if the ICM is not bad and in consideration of what you have already said, I would think possibly the ECM is causing the problem. Those ECMs can cause many strange symptoms and running problems.
With your problem, if the ICM is not bad and in consideration of what you have already said, I would think possibly the ECM is causing the problem. Those ECMs can cause many strange symptoms and running problems.
Intermediate
Joined: Mar 2007
Posts: 48
Likes: 0
From: Central NJ
I had the same problem, and finally one of the places looked a little harder and figured out how to test it with jumpers, it was in advanced auto's tester book. They got a loyal customer with that.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Instructor
Joined: Dec 2004
Posts: 231
Likes: 0
I would agree with badabing9 and with your symptoms the only reliable check is by substitution. Any bench check of the unit will probably not show anything up.
With your problem, if the ICM is not bad and in consideration of what you have already said, I would think possibly the ECM is causing the problem. Those ECMs can cause many strange symptoms and running problems.
With your problem, if the ICM is not bad and in consideration of what you have already said, I would think possibly the ECM is causing the problem. Those ECMs can cause many strange symptoms and running problems.
Tech Contributor
Joined: Jun 2004
Posts: 20,934
Likes: 962
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Instructor
Joined: Dec 2004
Posts: 231
Likes: 0
well, i don;'t know what to tell you other then that was the problem with my car in the past. replaced the electronic spark control module and the car started.
Instructor
Joined: Dec 2004
Posts: 231
Likes: 0
I would agree with badabing9 and with your symptoms the only reliable check is by substitution. Any bench check of the unit will probably not show anything up.
With your problem, if the ICM is not bad and in consideration of what you have already said, I would think possibly the ECM is causing the problem. Those ECMs can cause many strange symptoms and running problems.
With your problem, if the ICM is not bad and in consideration of what you have already said, I would think possibly the ECM is causing the problem. Those ECMs can cause many strange symptoms and running problems.
especially if the ignition control module is thermally intermittant.
Drifting
Joined: Sep 2005
Posts: 1,867
Likes: 3
From: Pasadena Maryland
Sounds like a heat related issue? Can you get a can of Freeze Spray? Maybe just try a bag of ice on the ECM or the module and see if the heat is the cause? If you can fix it by cooling something off, that is probably the culprit?
Tech Contributor
Joined: Jun 2004
Posts: 20,934
Likes: 962
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
ESC doesn't have that much "control". I don't know what model year you have, but if it was a late 80's or early nineties with a memcal, then I would suspect the problem was in the calibration chip there, rather than the ESC portion.
Instructor
Joined: Dec 2004
Posts: 231
Likes: 0
Instructor
Joined: Dec 2004
Posts: 231
Likes: 0
also, it would be hard to determine at what temperature the "icm" would become thermally intermittant and by the time you got it to fault, removed the cap, etc, the effort would be an exercise in futility. just replace the module. ice on the ecm is well
.find a substitute and swap it out. any moisture that should intrude into the ecm will have undesirable effects.
