bout to give up
#11
#12
Since it comes and goes randomly, definetly sounds like an electrical issue. Another thing to check is all of the frame and body grounds. A loose or corroded ground will send the electronics into chaos! There should be frame to body, battery to frame and bed to frame grounds. If you live in the rust belt, I would lay good money on that being the problem.
#13
#14
I can drive the truck to work 3 miles restart it and everything works i drive it 30 miles to pick up my side by side at the dealer and no overdrive. The next time i go to the dealer i have over drive. So i drive it next town over to help a friend turn the truck off for 5-10 min restart it no overdrive. Won't ever act up cold has to be at operating temp and not in a good mood that day
#15
Thats the worst kind of problem to have! LOL! I'm an electrician by trade, and get calls all the time where it wasn't working until I get there, then they can't make it do it again for nothing! LOL! Had a call yesterday at a commercial door plant saying that there lights and computers wouldn't work when they came in that morning, by the time I got there, everything was working fine. Standing around bs'ing about diesels and Jeeps, the lights dimmed for about 10 seconds, then came back on. Put my meter on the service and set to record, finally about 20 minutes later, it did it again. Voltage dropped down to 40 volts, should have been 120, called the utility company out, there meter guy said everything was find on their end. About 10 minutes later it droppped again, he changed his tune, it was on their end. They had made a bad splice at the transformer!
#17
#18
As of now these not much to try besides a pcm or fire . Checked every ground and almost every wire i could find. Changed the crank sensor and vehicle speed sensor. Had the alt checked added a few ground wires changes some wire ends. Checked for crusty plugs and pins in the plugs. Thinking pcm or fire
#19
Is the pcm in a location you can get to fairly easy? If so while the truck is running, and the tach is dead, wiggle the connector and/or tap on the box with a rubber mallet. If it clears up, or momentarily starts working, then you have got it narrowed down to the pcm or connector. If it has been chipped, they may have not seated the chip on the circuit board well.
#20