AC Control Unit blower only working on high level

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Mar 27, 2014 | 11:47 PM

SEALDOG98

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Junior Member

Joined: Mar 2014

Posts: 44

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From: North Hollywood, California

Year: 1998

Model: Cherokee

Engine: 4.0L

AC Control Unit blower only working on high level

My AC Control Unit only blows on (4) the full blast setting.
I thought it was the unit itself that was faulty, so I found a replacement from a Pic A Part and it sucks to say that the same condition exists. Again, only works on level 4.
I've yet to unplug the connection behind the unit and spray contact cleaner in the harness which is part of the car. Do you guys think that is the trick? Has anyone had a similar problem knowing that it is not the AC Control Unit itself?

Mar 28, 2014 | 12:58 AM

Rogue4x4

::CF Administrator::

Joined: Feb 2011

Posts: 14,479

Likes: 805

From: Blunt, South Dakota

Year: 97

Model: Cherokee (XJ)

Engine: 4.6 stroker

Blower motor resistor. Common problem. Easy fix.
https://www.cherokeeforum.com/f2/how...esistor-43821/

Mar 28, 2014 | 01:11 AM

SEALDOG98

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Junior Member

Joined: Mar 2014

Posts: 44

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From: North Hollywood, California

Year: 1998

Model: Cherokee

Engine: 4.0L

Quote:

Originally Posted by roninofako

Blower motor resistor. Common problem. Easy fix. https://www.cherokeeforum.com/f2/how...esistor-43821/

Thank you so very much!!!!
It looks like it'll be working tomorrow thanks to you
Killer

Apr 9, 2014 | 02:45 AM

SEALDOG98

Thread Starter

Junior Member

Joined: Mar 2014

Posts: 44

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From: North Hollywood, California

Year: 1998

Model: Cherokee

Engine: 4.0L

Quote:

Originally Posted by SEALDOG98

Thank you so very much!!!! It looks like it'll be working tomorrow thanks to you Killer

It appears that the Resistor itself was good. However it's the resistor connector that is toasted. Literally.
It's amazing that I'd not had a fire from the burnt link and slight melt in the connector.
I'm waiting for its delivery and will hopefully have it fixed soon.