Question about 1986 Chevrolet Camaro

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Help! Help! Help! our @#*@!#* new coil is getting hot just

Hello our @#*@!#* new coil is getting hot just like the original did,(which melted on bottom) just by leaving the key in the run postion...

NO fire from coil-->through coil wire-->to distributor. 12v coming from wiring harness on firewall to coil--->10v coming from other plug in coil to the module. We replaced and checked the module, pick up coil, and the coil itself, even the ignition switch on lower steering column!??? Fuel pump working fine soaking the plugs, Timing chain is turning as well as the bug in cap... trying not to buy a new computer??? $90.00 Please help, someone, anyone... spoke with over 30 good mechanics in 3 weeks now and none of them could figure this out or point us in a right direction. Thanks if you can help. Lee.

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  • Thomas Kessenich
    Thomas Kessenich May 11, 2010

    You said that the timing chain was turning, But is it in time? Make sure that you have a good ground from the engine to the firewall. Also if it has the coil on top of your distributor then check the ground wire inside the cap where the coil is. That black wire has to be on for it to work. Let me know if this helps.

  • Richard Scordino May 11, 2010

    If you have a tach installed, try disconnecting it. It could be internally shorted and grounding the system. If I remember correctly, the computer controls the spark timing but does not have any direct connection to the power supply for the coil.
    Does it start and run at any time?

  • Rick Reichlein May 11, 2010

    What are the same voltages you listed when you, say run the engine at 3500rpm?

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  • 28 Answers

I believe there is something wrong inside the distributor,
the cam may be worn inside the distributor, and your connection is not being broken, therefore, you have no spark. Make sure everything inside the distributor is working correctly, and that the cam is not worn.

Posted on Apr 14, 2009

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