94 C4 cuts off for split second, check engine light turns on
Thread Starter
7th Gear
Joined: May 2022
Posts: 7
Likes: 1
94 C4 intermittent ignition cut
I recently started having a problem with my 94 6 speed coupe. Under normal driving conditions (cruising at the speed limit and all gauges are reading normal), my car will cut off for a split second followed by the check engine light coming on, the a/c quits and starts blowing hot air, and rpm creeps down with the clutch pushed in rather than falling at a normal rate. It doesn’t do it every time I drive it but it happens about every 70% of the time and it will only do it once per trip if it happens at all. If anybody has had the same problems or has any answers, please let me know.
Thanks,
Grayson
Update: I used the paper clip trick and I was able to pull the codes which are H41 from module 1, H36 from module 4, H62 from module 9, and H83 also from module 9. It seems to me that the problems I’m having is not coming all from the same source. Could the optispark cause the random ignition cuts? Under load it runs normal but has a slight misfire at idle.
Thanks,
Grayson
Update: I used the paper clip trick and I was able to pull the codes which are H41 from module 1, H36 from module 4, H62 from module 9, and H83 also from module 9. It seems to me that the problems I’m having is not coming all from the same source. Could the optispark cause the random ignition cuts? Under load it runs normal but has a slight misfire at idle.
Last edited by green_goblet; Sep 30, 2022 at 11:31 AM. Reason: Updating
Thread Starter
7th Gear
Joined: May 2022
Posts: 7
Likes: 1
I noticed I started having this problem a couple days after I drove about 100 miles on a rainy day and the problem has gotten worse since I first noticed it. Is there way to test the opti without tearing it apart?
