Jeep had to be towed for the first time in 13 years
Well, my 88 YJ died on me while going down the highway at 55mph. There was no warning, the 4.2L engine just shut down. My Jeep is "Nuttered," with an MC2100, hei module, "TFI upgrade" (E core coil, dist cap, base and rotor from a ford 300). I had a buddy bring me an ignition module, its a 4 pin hei, and that did nothing to help. It would start and run for a couple seconds then quit and not run again until it cooled down a slight bit but not for more than a few seconds. I checked for fuel in the float bowl, it has plenty and the jets squirt when the throttle is applied. It has a new fuel pump, well its a few months old anyway. I had it towed to the house and parked it in the garage over night. The next day, it started and let me drive it around the block. I went in and replaced the fairly new coil (Ford E core) with a new one. Drove it around the block, parked it in the garage, revved up to about 2500 rpms and it just died again, no stumble or anything. I checked spark on the number one wire with a screw driver. Nothing. I cranked the engine a few more times and it started sparking reddish orange in color. So I started it and it died again, checked spark, nothing, let it cool for a minute, then it sparks... I repeated this until I gave up but it was always the same sequence of events. I am using a bolt on the fender as a ground for the spark.
So that is where I am now. Confused. I replaced the distributor about two years ago, replaced the coil and fuel pump a few months ago and the coil again today. The module is new as of yesterday.
Could this be distributor related? something to do with the pick up? I will replace the distributor but would rather not if I don't have to.
Thanks for any responses.