I have a 2002 Jeep Wrangler. Lately my speedometer has been acting weird. I can be at a stop in park and the gauge will bounce all over the place. This also happens when I'm in gear driving down the road. I have unplugged the sensor that is located at the rear of the transfer case. The gauge still bounces around. Does anyone else have an idea what this could be and what I can i do to fix this problem. It's also messing with the shifts at some points. I also unplugged both the PCM connection and the speed sensor to test the wire to see if there was a problem before I cut into it. We found no problems. Also had to disconnect the oil pressure sensor due to it runs on the same power wire. With that said we are leaning toward the PCM connector not making a good contact between the harness and the white shield that goes into the PCM or it's a problem with the PCM which will be the last thing I change due to the cost of it.
Probably an issue with the connection between your gauge cluster and the dash. Fairly common and the fix it to remove the cluster, clean the connectors or tweak them with pliers, and reinstall. If you push on the dash and the problem goes away, this is likely your issue.
Thanks for the input. I will look at this soon. Could this cause mis shifts while driving. From stop to rolling speed everything is fine but when i get to a yeild or something were I have to release the gas a slightly slow down. When I get back on the gas it doesn't completely shift down from 3rd and shakes the jeep like crazy. It's a automatic as well. When this happens I have to manually shift to 2nd and then back up to 3rd when I get back up to speed.
Haven't done it with my TJ, but the dash cluster connnection is much more common in XJs and in my XJ I've driven for hundreds of miles with the dash cluster disconnected and the AW4 works just fine.
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