2011 Jeep Grand Cherokee AC problem

Tiny
BRENTJOLLY
  • MEMBER
  • 2011 JEEP GRAND CHEROKEE
  • 3.6L
  • V6
  • AWD
  • AUTOMATIC
  • 46,000 MILES
My ac on high will blow hard for minute or two then blow low few seconds then hard again and it does this over and over
Wednesday, July 30th, 2014 AT 6:08 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,776 POSTS
Check the blower motor resister, check for bad grounds, check power supply to blower motor.

Also, is there any strange noise associated with this problem?
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Wednesday, July 30th, 2014 AT 9:24 PM
Tiny
BRENTJOLLY
  • MEMBER
  • 2 POSTS
No funny noise at all. Was thinking resistor, but everyone is telling me that it usually works on high only when resistor is bad.
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Wednesday, July 30th, 2014 AT 11:17 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,776 POSTS
That is correct. However, it sounds like something is shorting limiting the power to the fan motor. There has to be a bad connection or wire at some point.
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Thursday, July 31st, 2014 AT 2:57 PM

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