Thread: ignition modules...

Tweet

My chevy truck keeps blowing ignition modules. It has happened twice. both times it was after an hour of running the engine. I have a new coil, with an internal resistor, new alternator, new battery and new regulator, new spark plugs.

Any ideas as to what is happening?

Thanks

check to see if you have a good ground, Ford trucks used to blow them from overheating, do they ha v a goo supplu of air, not blocked by additional under hood stuff

1 (Ground the distributor.
2 (Disconnect the tach and see if the problem goes away.
3 (Make sure you put the silicone grease under the module.

Originally posted by Ron Golden
3 (Make sure you put the silicone grease under the module.

VERY IMPORTANT to use a heat transfer compound. I burned up a regulator/rectifier module on my motorcycle once because I forgot to use it when mounting the unit.

A common cause of module failure is high voltage. Even a new regulator can put out too much. Do you have a voltmeter?

Originally posted by R Pope
A common cause of module failure is high voltage. Even a new regulator can put out too much. Do you have a voltmeter?

Yes - i have one.

dielectric compound on bottom of module,
no cheap brand modules such as Autozone etc. ( they got a lifetime warranty & you'll need it.)