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Found 1 result

  1. Tom in NH
    Greetings, Have a 1989 YJ with the 2.5l TBI. Have had a sporadic idle, stall problem. Verified fuel delivery and injector performance, tested and/or replaced all sensors and IAC motor. Cleaned throttle body, checked for vacuum leaks. Kept looking over at the coil/icm assembly, but thought "no, just replaced those not too long ago." Long story short, tested the coil - badly out of spec. Changed out both coil and icm and finally (slow learner here) checked voltage entering coil. Constant 14 =/- volts at startup and run. Checked with my daughter who drives the vehicle and she confirmed after pondering that yes, seems to only happen after driving for quite a while - giving the icm/coil plenty of time to get nice and toasty. So, I'm guessing that means ecm troubles, as I know this problem has popped up from time to time but am wondering if it is possibly an ignition switch issue? So, I'm checking with the experts before I choose which pain in the butt part to remove first. Thank you.
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