Troubleshooting Oil Pressure & Temp Gauge's...

[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