92 2.3 4x4 shortbed 5 sp frying coils

[kgreenjinx]

Love this forum. My son and I have been working on an 85 ranger and my son was just given a 92 that my neighbor can't afford to drive anymore. He has been replacing coils every week. He has replaced the sensor behind the harmonic balancer, swapped computer with a parts truck, checked plugs at the coils, had it to a couple different shops. No luck. They last about a week of commuting to work and pow, they leave him stranded going down the road. he gets out and changes them and gets back on the road. My thought, could the ignition control module fry coils? We were going to go through and clean all the grounds Anywhere else to look? I can't find anyone else with a recurring problem like this on the forum. Thanks for any advice.

 

[rusty ol ranger]

Where is he buying coils from?

Im not sure if an ignition module would kill the coils or not. But doesnt the 2.3 have EDIS and not a distributor?

Heat is usually what killss coils. The engine isny running abnormally hot or missing sheilding or anything is it?

 

[kgreenjinx]

Where is he buying coils from?

Im not sure if an ignition module would kill the coils or not. But doesnt the 2.3 have EDIS and not a distributor?

Heat is usually what killss coils. The engine isny running abnormally hot or missing sheilding or anything is it?

Everything looks good as far as shielding.
He was buying them from oreillys. Not sure which brand he was getting from there.
Yes you are correct no distributor. And from what he is saying he is replacing both coil packs each time. Whether or not he needed, to i dont know. But he did. Thanks for getting back to me

 

[Uncle Gump]

Are you actually testing these "fried" coils after they come out? There are some resistance checks that can be performed on the coil itself. A quick google search pulled up several how to's on coil testing. After figuring out the tests... take a DMM with you on the drive... when it shuts down... test the coil on the spot. I don't believe I've seen coil failures happening regularly.

 

[kgreenjinx]

I will catch up with him and grab some of the old coil packs and test those for S&G and see if they test bad while waiting on this to blow these as we can't really drive this right now(have a couple other things to fix on this before we drive it too much. I was taking his word for it as he was changing them out on the side of the road, and proceeding on his way. I guess it could be something else.

 

[kgreenjinx]

Just an update. So since we got the truck over to our house, we it has started running again on the " bad parts" The truck has been sitting for some time at his house. The truck was a corrosion nightmare. We cleaned everything up took off the EDIS clean it all real well and put on new thermal paste. Cleaned all grounds. left the bad coils on it and that he pulled it into the field with when he parked it when it quit for the last time. We have now driven it about 75 miles or so on the country road and let it idle in the drive for long periods of time and no issues. spark tester inline showing strong spark. Fingers crossed. Corrosion was it. The EDIS Box? component? whatever its actually called was very corroded and the thermal paste all but gone. makes you wonder if that was getting hot and not allowing heat to dissipate through the intake. manifold. Now we just need to figure out an intermittent low idle issue and we will be golden.