2000 Cherokee Overheating Still

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Aug 11, 2010 | 10:45 AM

#31

tuxfan212

CF Veteran

Joined: Oct 2009

Posts: 1,487

Likes: 0

From: Parrish

Year: 1989

Model: Comanche

Engine: 4.0

Quote:

Originally Posted by jgable

it overheats after 10-15 minutes highway driving. Shoots up to red. Lower rad hose has a spring. Rad cap 16 psi. No pressure test.

Mine did the same thing on the highway. Its probably the Mech. fan clutch. What happens is during highway driving the air forced in will be blocked because the mech fan will not spin or wont spin quickly. At idle the fan will probably spin though. Its like 30 bucks to replace.

Aug 11, 2010 | 11:03 AM

#32

jgable

Thread Starter

Newbie

Joined: Aug 2010

Posts: 15

Likes: 0

Model: Cherokee

How do I test this? Could this really be it? would that fan make it run that hot

Aug 11, 2010 | 05:31 PM

#33

cherokeekid58

Newbie

Joined: May 2010

Posts: 27

Likes: 0

From: Macungie

Year: 2000

Model: Cherokee

Engine: 4.0L

With your engine off an key out of the ignition ( just in case someone wants to listen to the radio) pop the hood and spin the mech. Fan if it spins easy with no effort or resistants it's bad. If it has resistance it's good an your seearch will continue. Good luck