how can i tell if i have a bad fan clutch?

Reply Subscribe

Thread Tools

Search this Thread

May 14, 2012 | 11:14 PM

JaggerXJ

Thread Starter

Senior Member

Joined: Jan 2012

Posts: 550

Likes: 0

From: Somerset,Ky

Year: 1999

Model: Cherokee

Engine: 4.0

how can i tell if i have a bad fan clutch?

hey my jeeps making some weird noises and iv noticed i can grab my fan and wiggle it back and forth some.. how do i know if my fan is bad?

May 15, 2012 | 08:31 AM

TN12valve

Senior Member

Joined: Jan 2012

Posts: 804

Likes: 0

From: Tennessee

Model: Cherokee

Engine: 4.0

If your fan clucth is bad the fan wont ever shut off... So the faster you go and the higher the RPM the faster the fan will spin. It will sound like a damn big rig.

May 15, 2012 | 08:53 AM

ol"blue

CF Veteran

Joined: Mar 2009

Posts: 28,068

Likes: 6

From: Tenn. and Mich.

Year: 2004

Model: Grand Cherokee

Engine: 4.7L V8

Quote:

Originally Posted by JaggerXJ

hey my jeeps making some weird noises and iv noticed i can grab my fan and wiggle it back and forth some.. how do i know if my fan is bad?

If you can wiggle the fan in and out the water pump is probably bad. That's a sign of a bad bearing, and so is the noise.

May 15, 2012 | 12:40 PM

JaggerXJ

Thread Starter

Senior Member

Joined: Jan 2012

Posts: 550

Likes: 0

From: Somerset,Ky

Year: 1999

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by ol"blue

If you can wiggle the fan in and out the water pump is probably bad. That's a sign of a bad bearing, and so is the noise.

i just put in a water pump and new thermostat

May 15, 2012 | 12:48 PM

93XJLI

CF Veteran

Joined: Jan 2008

Posts: 3,671

Likes: 10

From: LI, NY

Year: 1998

Model: Cherokee

Engine: 4.0, bolt ons for days...

Quote:

Originally Posted by TN12valve

If your fan clucth is bad the fan wont ever shut off... So the faster you go and the higher the RPM the faster the fan will spin. It will sound like a damn big rig.

They usually fail and don't spin fast enough. If you're running hot and rev the motor and the fan doesnt sound like a 747 on takeoff, it's bad. They are LOUD fully engaged.

May 16, 2012 | 04:54 PM

CherokeeChick

CF Veteran

Joined: Jan 2011

Posts: 8,998

Likes: 3

From: Eh infusion

Year: 2000

Model: Cherokee

Engine: The legendary inline 6, haven't done anything here yet

Quote:

Originally Posted by JaggerXJ

i just put in a water pump and new thermostat

Hey buddy, my electric fan had play and made a wretched noise. There was nothing wrong with the water pump, just over time with anything it needs to be replaced. I took one out of an early 90's xj and cut the clips slodered in the new clips and it was good to go and no more wretched noise lol!!