Marine1Texas Posted April 4, 2018 Share Posted April 4, 2018 So today I had some time to spend on the 1987 Jeep Comanche 4.0. I redone all the c101 connection. so direct wire solder and heat shrink wraps. Then I got over to the 3 relays. I pulled them up and check the bottom connections. They had that same c101 crap grease. So I cut out the relays and put in some new relay connectors and new relays. solder and heat shrink wrap each wire to the relay connector. Now from the video here you can see that the idle is perfect. We bought this truck new in late 1987. From day one we had a idle that jumped around. No matter what we did it was jumpy. I knew the c101 connection was a problem in these jeeps as well as the crappy ground system. I did all cruiser tips and it solved a lot but not everything. So don't just check the relays, and connections, look under and clean that great out, or do as I did. I installed water proof relays for all 5 that I have. The Fuel pump, relay latch, o2 sensor, headlight relay (add on), and the air con heater relay. Link to comment Share on other sites More sharing options...
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