Question about 2001 Nissan Quest

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Does not.over heat runs great blower blows fine, fan speed switch is fried.so.it only runs on high but every now.and again it'll blow heat then strait back to cold. The temp on the car.stays perfectly level so the themastat is working properly what could it be.

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  • Nissan Master
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First the switch this may not be bad switch it sounds like a bad blower resistor, this is what controls the speeds, the loss of heat may be low coolant level or a bad blend door actuator, depending on the heat/ac system in the van it may also be a bad vacuum leak in the engine compartment, some models use actuators to control system and some use vacuum, if the system looses vacuum the door will close until vacuum is restored, hope this helps.

Posted on Sep 12, 2010

Testimonial: "Thank you blend door actuator great ti, thank you."

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Clear out the dust on the dial and slide control first.
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Please keep me up to date on the fix via email.

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2. Check your available voltage at the blower motor on the different settings. it should vary with high supplying 12volts, make sure to do this check with the blower motor still plugged in.

3. Connect the blower to a 12v power source and see if it runs at high speed.

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1 Answer

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