Bad Coil?

[93/96 f-body]

same problem

Hi, I'm a new member.Just so happens i have the same problem with my 93 camaro i purchased.I first found the eblow was broke at the tbody figured that wasn't going to solve the problem and it didn't.I replaced it with the trick flow unit works well.Anyway I became a member hoping i could solve the same problem and glad i joined.Tomarrow i'm going to get a new coil and Ic module and follow your advice and hopefully it will be fixed Thanks guys great site.

[N20LT4Bird]

I incorrectly typed dielectric grease as the application for the back of the module, in fact it is a silicone grease. It is very important! The replacement modules include a little tube of the stuff. Could that cause a high heat stumble? You bet. Is that definately your problem? Hard to tell. Modules aren't too much, it might be worth swapping a known good one and see what happens.

The blue glow is a way to chase it down in the dark. In my particular case, I just hadn't got to that point yet..... the problem was intermittant and I figured out the problem before resorting to that. It's usually most common around plug wire boots and the coil. For the coil to glow, there was a voltage leak and should have been replaced. It may have worked OK for the moment, but it was starting to break down. I always use a swab of dielectric grease on the inside of each wire boot to keep the boot from sticking, keep out moisture and minimize leak.

Sweet, Joe. I will put some silicone grease on the ICM....

[paxton350]

hesitation under load

hesitation under load would lead me to the plugs/wires and whole ignition circuit however you said everything is new. it could possibly be fuel, check the FPRegulator and EGR valve.