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Matt king

Coolant level sensor

Question

I have a 93 Mack model RD690S WITH a electrical malfunction light 1-7 Coolant level sensor. Changed sensor filled coolant tank and light still flashes same code is there something I'm missing? 

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4 answers to this question

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Does the sensor screw directly into the radiator or is it in a surge tank up on the fire wall? Also does the sensor have a plug in harness or eyelet and nut style harness

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I’m having the same issue. Replaced the sensor and code won’t go away.  I checked for continuity in the plug and was good. Yet if I use a test light, I can’t seem to get a signal. 

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Yep, need to know how sensor is done and on the second truck question, not Mackpros answer, what model and all do you have, different years, models, makes a difference. 

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305mack is one I’m asking about model, etc

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