Troubleshooting Oil Pressure & Temp Gauge's...

[alec22]

Does anyone happen to know how I might test these circuits to help find where the problems lies. I found some information on doing this with the fuel sender, and I was able to get that straight.

Would I ground these wires out? What am I looking for on the gauge when I ground it?

Thanks!

[Slonaker]

The temp gauge will peg to the right if you ground the green wire that comes off the sending unit on the driver's side head. I found out when mine melted to the valve cover...

Slonaker

[grinch4om]

the senders work off resistence, go to a dealer and see if you can borrow a gauge tester. I used the snot out of one at the Ford garage, also at Toyota. You hook up to the wire, set the resistance( use service manual for specs) if the gauge works, the sender is bad, if not, the wire or gauge is at fault . to isolate those two if that happen, then go directly to the cluster and check the gauge, if works, wire is at fault . if not, gauge. usually it is the sender or a corroded connection at the sender