Originally Posted by Jblood
Today I was driving and noticed that my temperature gauge had suddenly stopped working. I drive a 1987 Wrangler and I'm proud to have one. What I am wondering is where the sending unit is(So I can Work on it) or what could have caused this problem any insight would be great.
I don't know which engine you have. I have a straight six in my 91 YJ. On that engine the sending unit to the guage is at the rear of the head on the drivers side. If you climb up and bend way over the block you'll see it. It's a small probe that has an "L" shaped connection that just pushes on like a spark plug wire. The temp sensor up front near the thermostat is the coolant sensor for the computer, not the gauge. Also it does'nt hurt to take your gauge cluster out and clean the contacts, and the one plug to the harness.