Quote:
Originally Posted by Step-down
Hot coils die
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This would be my bet. A coil will get hot under the hood. As it does the fine wires in the secondary winding can expand. The only insulation is a coat of lacquer. They can easily short. When he coil cools down all is well again.
I had this happen with two coils when I thought it a good idea to install a high performance coil. The first one drove me to frustration before I figured out what was going on. I was up in the desert with the ambient temperature at about 100 degrees. Every time I stopped for gas the car wouldn't start. When it finally did start it ran terrible for a mile or two until the temp under the hood came down. The second one failed the same way on another car.
Tom Endy