Question about 1995 Oldsmobile 88

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Heater fan motor wont run on high

The heater fan moter will run on all speeds but high.Got a new heater control switch and still no high.

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Replace your fan motor resistor.

Posted on Nov 08, 2008

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  • 153 Answers

Check or have checked the blower motor resistor. This is usually how they act.

Posted on Oct 26, 2008

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HEATER NOT WORKING


The complete removal is shown in this youtube video.
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So you're getting heat but no blower to circulate the heat, right? It's also possible the fuze is blown to the blower motor, the switch that adjusts the speed of the motor could be damaged, or its resistors that limit voltage, to control speed could be "open" (burned up). I would check many of those before replacing the fan..

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A bad blower moter resistor can cause the blower to default to high speed only. The resistor is
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1 Answer

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if the fan/motor only works on max No 4 setting ? then may i suggest you have a resistor fault or commonly known as a reostat in uk this is the component that provides the relevent reduced speeds on selection but when it fails only max speed works so you should find this unit attached on heater fan exterior if you follow wires from actual motor it will connect to the resistor unit ? then onward to switch control it is not to difficult diy and if you have access to manual/ it will give location/access for renewing? hope this helps/inspires you to diy ?

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It only works on hi speed it stoped workingall together i took it apart and it works but only hi speed is moter bad or is it a bad switch?


is this wiper-heater fan - if motor is working assuming this is heater/ac fan motor --have switch tested

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Could be two things. Heater control..or heater switch. Or the moter is not recieving the reostat info from control. Check at heater wher wires go into it..as you change positions of switch you should see a voltage drop or increase, if u do then the moter is bad...if u do not then replace the heater control unit. :)

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