Question about 1985 Cadillac DeVille

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Why does my speedo and heater motor not work?

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For the speedo mostly it is the sensor ( check the wire first , clean it and install it back if not then change it ) in the transmission and for the heater I would check the fuse first

Posted on Jun 15, 2014

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1 Answer

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1 Answer

Possible AC fan rubbing 95 olds cutlass ciera


the next time it does this, locate heater blower motor and either give it a tap or grab a hold of it and see if it changes sound or goes away altogether. it could be squerl cage on heater fan maybe rubbing on heater box, or heater motor could be on its way out. if nothing happens when you do this at least you can elimenate that. it going away when you apply the break could just be happenstance, as heater motors start with little noise that last short time and progressely get worse over time. it also could be speedo cable, the cable itself runs inside a flexable tube, witch runs from speedo head to transmission and there is lubercant inside this tube and they can go bad, unless needle on speedo jumps around i dought its that. also i'am no expert, i just went to the school of hard knocks. hope something here will help. OLD SCHOOL.

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1 Answer

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