Ignition Coil Overheating
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Ignition Coil Overheating
I own a 1977 F-150 shortbed with a 351 engine. I'm having issues with the ignition coil overheating. I'll drive it around for about 30 minutes and then the engine will chug and eventually just die. If I cool down the coil by putting a bag of ice on it, it will start back up and run for another 30 minutes until overheating and dieing again. Ive made sure it's been wired correctly. I get 6.5v at the positive side of the coil with the key in run. I recently replaced the cap and rotor, spark plugs, and spark plug wires.
Here's the diagram I used
Here's a pic of my ignition coil
The 2 wires on the bottom attach to the positive lead one is the resistor wire and the other is the start bypass wire from the solenoid "I" terminal. The wire on the top is coming from my duraspark 2 ignition module. It's a green wire and label "tach" on the diagram. (Sorry pic is tilted)
I just don't know what could be causing the coil to overheat. Could an unproper ground cause it to overheat? Bad ignition module? Or maybe just the location, being close to the engine?
Here's the diagram I used
Here's a pic of my ignition coil
The 2 wires on the bottom attach to the positive lead one is the resistor wire and the other is the start bypass wire from the solenoid "I" terminal. The wire on the top is coming from my duraspark 2 ignition module. It's a green wire and label "tach" on the diagram. (Sorry pic is tilted)
I just don't know what could be causing the coil to overheat. Could an unproper ground cause it to overheat? Bad ignition module? Or maybe just the location, being close to the engine?
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