1991 XJ Aux fan question

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Jun 16, 2012 | 04:30 PM

#16

cruiser54

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Joined: Aug 2011

Posts: 43,971

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From: Prescott, Az

Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

Quote:

Originally Posted by salad

Since noone specifically mentioned this, the aux fan actually does pull air through the condensor coil for the A/C. There's a smaller radiator sitting in front of the main engine rad where the electric fan is. You can see it if you pop off the front grille

See Post #8. I mentioned that. But, you explained it way better. LOL.

Jun 16, 2012 | 04:32 PM

#17

cruiser54

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Joined: Aug 2011

Posts: 43,971

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From: Prescott, Az

Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

Quote:

Originally Posted by XJPhoenix

Another thing that pops into mind... Maybe the OP's Aux fan is on it's way out. It's loud and draws lots of power...

Used ones from the scrapyard aren't too expensive. Plus, you could upgrade to one from a later (94-up) XJ with the swept blades. They're supposed to pull more air, and are quieter.

HTH!

Great and real possibility. The later fans can be used in the earlier models by simply changing the connector.

BUT, the fan is coming on with the AC compressor. The compressor clutch is the BIG draw comparatively.

Jun 17, 2012 | 03:30 AM

#18

aa7kn

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Joined: Apr 2012

Posts: 253

Likes: 2

From: Abu Dhabi, UAE

Year: 1991

Model: Cherokee (XJ)

Engine: 4.0 6cyl.

now that's a great idea, my fan is very loud and could be going bad I guess. I will go to my local JY and see if I can find a newer one and try that. and yes I suppose that the Aux. fan is also used to pull air across the coils for the A/C, and maybe I should leave it hooked up. thanks again.