If you suspect a faulty ignition coil, you’ll first need to test it. “Testing ignition coils is a straightforward and fairly easy DIY,” says Aaron Turpen, an automotive expert at Car Talk.

Ignition-Control Module Test Testing the ignition control module is a little trickier. When the module is exposed to a specific heat range—which can vary—it tends to fail.

The module is also specialized for racing. The ignition module is the equivalent of the system's brain. It controls the current sent to the coil.

The Duraspark module is easily tested by the end user, but the EDIS and COP systems are a bit more technologically advanced and take some real know-how, test equipment, and manuals to diagnose.

Q: My 2002 Buick LeSabre has 98,887 miles on it. Its ignition control module is failing. Since 2014 I have replaced it three times. Can you please tell why my control module keeps failing? It stops… ...

BMW Motorcycle Electronic Ignition Module Maintenance Here’s something you’re supposed to do about once every millenium or so on your trusty BMW Airhead – apply heat sink compound to the underside of ...