Explorer 2WD V8-302 5.0L VIN P SFI (1999)
Temperature Gauge: Testing and Inspection
1. Disconnect water temperature indicator sender unit C104. Connect one lead of Instrument Gauge System Tester to water temperature indicator
sender unit C104, circuit 39 (RD/WH), and the other lead to ground.
2. Set Instrument Gauge System Tester to 300 ohms. Key ON. Wait one minute. The engine coolant temperature gauge should indicate C (cold).
Key OFF.
3. Set Instrument Gauge System Tester to 45 ohms. Key ON. Wait one minute. The engine coolant temperature gauge pointer should be in the one
quarter range to mid range. Key OFF.
4. Set Instrument Gauge System Tester to 18 ohms. Key ON. Wait one minute. The engine coolant temperature gauge should indicate H (hot). Key
OFF. Return to the Pinpoint Test.
