My old Trooper, which is painted like the Merry Prankster bus, has had a series of electrical/ignition problems. It began earlier this winter with an occasional engine miss and also occasional a failure to start. My mechanic has replaced the distributor, the coil and the ignition control module (twice). Each time it runs fine for a couple of days and then starts acting up again. It is currently sitting in my driveway with zero spark coming out of the coil. Any ideas or suggestions as to what this problem might be would be greatly appreciated. The year of my Trooper is 1990.
Every part of the ignition system has to run via wires. You can replace parts all you want, but it won’t help if the the wiring connecting the parts has issues. So have the wiring harnesses been completely inspected? Right now you have no spark. Checking for 12V at the coil right now would be a pretty good start.
You should also check the crank shaft position sensor and its wiring.
Thanks so much. The wiring I thought of, but I’d never heard of the crank shaft position sensor. Will do!
Look it up for full info - the engine can’t do a thing without it.