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Don Barclay

Don ... 7/29/2010

1991 Mercedes Benz 350SDL Base 6 Cyl 3.4L

Engine

The temperature gauge is not working what is wrong

1 Answer


Blackwater

Blackwater 7/29/2010

The temperature sending unit is busted. Or your coolant temperature sensor is busted (this look like a small sparkplug)

Check the wire to the sensor and be sure it is hooked up. If so remove it from the sending unit. Turn the ignition and have someone watch the gauge while you ground it to the engine. If it moves the sender is bad.

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