Hey guys, my Bronco would'nt start a few minutes ago, i checked and had no fire. Checked my coil and had power to it but nothing comeing out. Would you think my coil is bad or do i need to check something else? 87 model.

 

The first thing I would do would be to pull codes from the computer. The TFI module on the back of the distributor is a known trouble spot. Oft times, a bad TFI module will leave a 14 and/or 18 in CM. Even if it passes the self-tests, I would check the TFI module before assuming the coil was at fault. I believe there's an article here somewhere on testing the TFI module, check Ken00's tech info post.

 

I would also check codes 1st but you could go buy a coil and check on the return policy and just try it. WOudl be an easy check to see if its coil or not. Just a thought. I got one at auto zone for like 35 bucks i think.

 

Thanks, i gathered up some parts at the house, and caught a ride to work this morning when i got here I replaced the coil and made sure my distributer was turning and still nothing. I have fire going into the coil thru both wires, they are hot all the time, even while trying to start it. I have a new dist, i'm gonna put in it at lunch, i'll let you guys know what i find. Thanks again.

 

sorry i just read your post. I did read the article, it was very imformative. I'll try that if the dist, does'nt fix it.

 

Ok, it was something in the dist, she runs like a top again. Thanks.

 

I was about to say, it's gotta either be the hall-effect pickup/sensor inside the distributor or the TFI module, more than likely, if you have no spark.

You can test the coil by grounding the coil negative momentarily while having the coil wire that goes to the distributor connected to a spark plug. You wouldn't want to actually crank the engine to do this test, as the coil would be energized and giving full spark all the time, if the lead is constantly grounded, if that makes sense.

 

Thats the same thing that happened to me. I changed the distributor, it ran like a top, for about three weeks, and then the same old problem again. Yeee haaa!!