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Mar 11, 2012 | 07:23 PM

#14416

jakbob

CF Veteran

Joined: Dec 2011

Posts: 4,006

Likes: 1

From: Pasadena, MD

Year: 1987

Model: Wagoneer

Engine: Renix 4.0

Quote:

Originally Posted by a_shirey

replaced the thermostat and the water pump. brand new parts. jeep is still over heating, but only at idle. normal driving its fine. any ideas?

MECHANICAL FAN CLUTCH

It is what the motor relies on to keep cool at idle. Just because its spinning does not mean it is spinning fast enough to pull the amount of CFMs to cool it.

Mar 11, 2012 | 07:24 PM

#14417

96xjclassic

CF Veteran

Joined: Dec 2010

Posts: 6,880

Likes: 0

From: Frederick, Maryland

Year: 1996

Model: Cherokee

Engine: 4.0 I-6 High output

Quote:

Originally Posted by a_shirey

replaced the thermostat and the water pump. brand new parts. jeep is still over heating, but only at idle. normal driving its fine. any ideas?

Damn it. Jakbob beat me to it.
Have you checked your fan clutch? Run your rig until its warmed up. Take a rolled up newspaper and try to stop your mechanical fan. If you can stop or even slow it down at operational temps its time to replace it. $40 bucks at advance auto. 4 bolts, easy fix.

Mar 11, 2012 | 07:26 PM

#14418

jakbob

CF Veteran

Joined: Dec 2011

Posts: 4,006

Likes: 1

From: Pasadena, MD

Year: 1987

Model: Wagoneer

Engine: Renix 4.0

Quote:

Originally Posted by 96xjclassic

Or get the ZJ fan upgrade. Didnt know about the test for it though.

And i apologize for the large billy mays font. Said it a couple times...

Mar 11, 2012 | 07:28 PM

#14419

96xjclassic

CF Veteran

Joined: Dec 2010

Posts: 6,880

Likes: 0

From: Frederick, Maryland

Year: 1996

Model: Cherokee

Engine: 4.0 I-6 High output

Quote:

Originally Posted by jakbob

Or get the ZJ fan upgrade. Didnt know about the test for it though.

And i apologize for the large billy mays font. Said it a couple times...

Oldtimer taught it to me.

Mar 11, 2012 | 07:35 PM

#14420

mikefrost

CF Veteran

Joined: Feb 2012

Posts: 2,716

Likes: 2

From: Bowie, MD

Year: 1999

Model: Cherokee

Engine: 4.0L

Quote:

Originally Posted by jakbob

Said it a couple times...

Yes you did Jake!

Mar 11, 2012 | 07:42 PM

#14421

jimmy21669

CF Veteran

Joined: Mar 2009

Posts: 7,996

Likes: 0

From: Berea, OH

Year: 1998

Model: Cherokee

Engine: 4.0

Jake....do you think it could be the mechanical fan clutch?

Mar 11, 2012 | 07:42 PM

#14422

Silentj

CF Veteran

Joined: Nov 2011

Posts: 1,221

Likes: 3

From: Westminster, MD

Year: 1998

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by Pudgy Fingers

Dude that sucks. Did you look into a payment option with them?

I did, but the wife wants it paid off now. She does not like to owe money to anyone and I can respect that.

Mar 11, 2012 | 07:43 PM

#14423

pulltabmike

CF Veteran

Joined: Jul 2011

Posts: 3,235

Likes: 2

From: Elkton, Maryland

Year: 1998

Model: Grand Cherokee

Engine: 4.0

Quote:

Originally Posted by Silentj

I'm pretty bummed out about it. I gotta do what I gotta do though.

That SUCKS....
Look at it this way, the next one will be bigger and better. And DW free

Mar 11, 2012 | 07:48 PM

#14424

Silentj

CF Veteran

Joined: Nov 2011

Posts: 1,221

Likes: 3

From: Westminster, MD

Year: 1998

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by pulltabmike

That SUCKS....
Look at it this way, the next one will be bigger and better. And DW free

Very true, sir!

Uncle Sam can take my money, but god dammit he can't take my dreams... LMAO...

Mar 11, 2012 | 07:51 PM

#14425

jimmy21669

CF Veteran

Joined: Mar 2009

Posts: 7,996

Likes: 0

From: Berea, OH

Year: 1998

Model: Cherokee

Engine: 4.0

For those of you looking for bushwackers....

https://www.cherokeeforum.com/f11/bu...-bucks-127954/

Mar 11, 2012 | 07:57 PM

#14426

a_shirey

CF Veteran

Joined: Jan 2012

Posts: 8,272

Likes: 1

From: Baltimore, MD

Year: 1999

Model: Cherokee

Engine: 4.0 I6 HO

thanks guys

Mar 11, 2012 | 08:04 PM

#14427

NewKindOfClown

Moderator of Jeeps

Joined: Jul 2011

Posts: 21,029

Likes: 3

From: Frederick, MD from Cleveland, OH

Year: 1993 YJ Wrangler

Engine: 4.0 I6

Quote:

Originally Posted by a_shirey

thanks guys

Any time, Shirley

Mar 11, 2012 | 08:08 PM

#14428

nowhres

CF Veteran

Joined: Feb 2012

Posts: 5,153

Likes: 0

From: Crofton, MD

Year: 1992

Model: Cherokee

Engine: 4.0 I6, 62mm BBK Throttle Body w/ 1" Spacer, Rusty's Airtube w/ 9" K&N Conical

Quote:

Originally Posted by NewKindOfClown

Any time, Shirley

Which junkyard will your Cherokee be going to, do you know?

Mar 11, 2012 | 08:10 PM

#14429

NewKindOfClown

Moderator of Jeeps

Joined: Jul 2011

Posts: 21,029

Likes: 3

From: Frederick, MD from Cleveland, OH

Year: 1993 YJ Wrangler

Engine: 4.0 I6

Quote:

Originally Posted by nowhres

Which junkyard will your Cherokee be going to, do you know?

No idea yet. They still haven't given me a buyback price, but they don't have the title yet so they can't do anything.

Mar 11, 2012 | 08:13 PM

#14430

nowhres

CF Veteran

Joined: Feb 2012

Posts: 5,153

Likes: 0

From: Crofton, MD

Year: 1992

Model: Cherokee

Engine: 4.0 I6, 62mm BBK Throttle Body w/ 1" Spacer, Rusty's Airtube w/ 9" K&N Conical

Quote:

Originally Posted by NewKindOfClown

No idea yet. They still haven't given me a buyback price, but they don't have the title yet so they can't do anything.

If I see it, I am going to steal your injectors.