geo Workshop Repair Guides

Geo Workshop Service and Repair Manuals

Temperature Warning Lamp/Indicator, Engine Cooling > < Gauge Does Not Move From Cold When Engine Is Hot|Page 1299
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Temperature Gauge: Testing and Inspection
Gauge Reads Low

1.

Remove lead at sensor, measure resistance using a suitable ohmmeter.

2.

At 40°C (104 °F) resistance should be approximately 1200-1350 ohms, and at 125°C (257 °F) resistance should be approximately 53-55 ohms.

3.

If not within specifications, replace sensor.

4.

Disconnect lead at sensor and gauge, check for a high resistance using a suitable ohmmeter. Repair wiring if necessary.

Temperature Warning Lamp/Indicator, Engine Cooling > < Gauge Does Not Move From Cold When Engine Is Hot|Page 1299