Omni L4-135 2.2L SOHC (1984)
Temperature Gauge: Testing and Inspection
1.
Remove wire connector from temperature sending unit.
2.
Turn ignition switch to the ON position.
3.
Using a jumper wire, momentarily ground the sending unit lead wire. This should cause the temperature gauge to swing to the full HOT position.
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If the gauge does not respond properly, check the wiring to the gauge and the power and ground feeds to the gauge.
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If power, ground, and wiring continuity are OK, replace the temperature gauge.