C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

on going ignition problem

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Old Jan 26, 2007 | 11:42 AM
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From: Troy Al
Default on going ignition problem

I'm having an on-going ignition problem, or rather the lack of, that is causing a lot of frustration with my 93. Weak fire at the coil and points. I put a new ICM last sunday. It cranked, and I ran it for 3-4 minutes. It was running rough, but I blew it off to cold weather, and the fact that it's been sitting since before Christmas. I sometimes "positive think" my way to disaster! Been hangin round those salesmen too long I suppose.
I had taken the old ICM to 3 differst auto parts. Auto Zone, NAPA, and Advance. Advance tried to check it, but couldn't the others all suggest the GM dealer, who wanted a gouging $60. So I took the risk, just bought one. ($80, AutoZone). Finally I called the local O'Riley's yesterday. Just for the heck of it I carried the old ICM, the original unit I took off last Sunday. It was good. So I guess I have a spare. Don't know it AutoZone will take it back, since I used the grease pack. I bought a coil yesterday. Ittried to crank. But won't. This car has always cracked right up. With only one bump of the started, regardless of how cold it is.
I'm stumped as to where to go next. In way of history. I put a new Opti distributor, and plug wires less then 1000 miles ago. I rechecked all the electrical connections as best I can. I'm getting No Codes. 12-12-12. 12-12-12.
It shouldn't hurt to crank it with the rubber breather removed? The unit that goes between the air intake, and the fuel injector unit on the top, front of the engine? I believe this is the throttle body.
Any ideas on where to go,appreciated.
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