Question about 1997 Jeep Grand Cherokee

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Blower motor does not work

Blower motor for heater and a/c does not work. I removed it and checked with battery outside vehicle-OK. Replaced blower motor relay in fuse box passenger side-OK. Replaced blower motor resistor-OK. Checked relay for fansetting switch-clicked-OK. What else is there?

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  • Anonymous Mar 29, 2014

    heater motor do not work what fuse is for motor

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I had the same problem, replace, replace, replace. Check, check and recheck. What I found was the blower motor resistor, located in the blower squirrel cage area, two prongs and a curly wire, was bad. Took the new one back, (it ohmed out okay, continuity ok, all ok!) replaced it with another, and Bingo, problem solved. Frustrating to say the least. After two relays and a blower switch, and test, test and retest. It was a faulty resistor. Made in Mexico. And no guarentee, even though new, it works. Trial and error. Even the dealer parts are Honcho en Mexico. Thanks NAFTA. You gonna make us all welfare babies.

Posted on Sep 28, 2009

  • Bob Wagner Nov 11, 2012

    Sorry it took so long to get back I have tried everything,no power at switch,no power at resistor,no power at motor ground checks good checked motor with small battery it worked, checked all fuses and relays all good ready to give up.

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Heater not working ???? Blower motor not working , no air blowing out of the vent's. defrost , floor ? I'm assuming you have the manual HVAC - climate control system , by the fact that you replaced the resistor assembly . Was there a relay included on the resistor assembly ? What fuse's did you replace ? HTR/AC - 30 amp. left I/P fuse box , BLOWER fuse -40 amp - under hood fuse box ? Did you use a DMM - digital multi-meter an test for B+ voltage at the purple wire at the blower motor ? The fuse's you replaced ,check for B+ voltage with meter .
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It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected. If it's faulty it has to be replaced.


=======

For blower motor testing and replacing, check the link below: ----

Blower motor Testing/replacing for all vehicles?

http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

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These will help.

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  8. 86b51f5.gif

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