Jeep Overheated and No heat

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Jan 10, 2015 | 03:27 PM

#16

ryrycars

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Joined: Jul 2013

Posts: 52

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From: Dayton, Ohio

Year: 1997

Model: Cherokee

Engine: 4.0 High Output

I'm leaning towards the radiator as well I'm about to go pick one up now.

Jan 10, 2015 | 04:11 PM

#17

djb383

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Joined: Nov 2009

Posts: 8,172

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From: The Republic of TEXAS

Year: 1998

Model: Cherokee

Engine: 4.0L HO

Quote:

Originally Posted by Hendur2@comcast.net

-make sure cooling fan runs..mine is now connected to the ignition switch. Plus, a tight fitting reservoir cap is key! Does your Defrost work on high heat? Check fuses as well. Worked on 3 friend's Jeeps.

Why would u even need the efan in freezing cold weather?.......wiring efan to ignition runs the fan constant, right?......but why. The OP says he has a complete new cooling system, however it leaks. With a properly functioning cooling system, this time of year u should never hear the efan come on, except when using defrost.

Not sure what u mean by "tight fitting reservoir cap"???? The OP has a "open" cooling system.....all the bottle cap is supposed to do is prevent coolant from slooshing out of the bottle......it holds no pressure.

Jan 10, 2015 | 04:15 PM

#18

djb383

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Joined: Nov 2009

Posts: 8,172

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From: The Republic of TEXAS

Year: 1998

Model: Cherokee

Engine: 4.0L HO

Quote:

Originally Posted by ryrycars

I'm leaning towards the radiator as well I'm about to go pick one up now.

Re-fill the cooling system very, very, very slowly....idle motor 'til hot with the rad cap off....check coolant level in both the rad and bottle for several days to follow, motor COLD.

Jan 10, 2015 | 04:32 PM

#19

ryrycars

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Joined: Jul 2013

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From: Dayton, Ohio

Year: 1997

Model: Cherokee

Engine: 4.0 High Output

will do thanks for all the help man!

Jan 11, 2015 | 08:41 AM

#20

Hendur2@comcast.net

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Model: Cherokee

Leaking fluid at cap? I found out all caps won't fit tight. Threads wrong for reservb

Quote:

Originally Posted by ryrycars

Update: got it all back together and filled up let it run to operating tarp with cap open. Put cap back on and I have a leak somewhere from the filler neck on the rad. I've tried 3 different caps with no luck for that so now I'm trying to figure out where it could be leaking from.

Try plumbers tape around thread to reservoir, then barely tighten cap All caps don't match reservoirs these days. Do Not run without cap. Are you sure your cooling fan is running?

Jan 11, 2015 | 08:44 AM

#21

Hendur2@comcast.net

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Joined: Jan 2015

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Model: Cherokee

Quote:

Originally Posted by djb383

Re-fill the cooling system very, very, very slowly....idle motor 'til hot with the rad cap off....check coolant level in both the rad and bottle for several days to follow, motor COLD.

Guess our problems were older Jeep issues. They worked. Keep posted

Jan 11, 2015 | 10:01 AM

#22

djb383

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Joined: Nov 2009

Posts: 8,172

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From: The Republic of TEXAS

Year: 1998

Model: Cherokee

Engine: 4.0L HO

Quote:

Originally Posted by Hendur2@comcast.net

Try plumbers tape around thread to reservoir, then barely tighten cap All caps don't match reservoirs these days. Do Not run without cap. Are you sure your cooling fan is running?

Quote:

Originally Posted by Hendur2@comcast.net

Guess our problems were older Jeep issues. They worked. Keep posted

What year is your XJ?.......is it a "closed" cooling system?

The OP has a '97 XJ, "open" cooling system. The bottle in an "open" system is "vented" to the atmosphere.....sealing the bottle cap does nothing.

Jan 11, 2015 | 10:05 AM

#23

johnson8769

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Joined: Nov 2014

Posts: 27

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Model: Cherokee

make sure overflow tube from radiator cap to overflow tank is not clogged .mine was and caused the anti-freeze to kick out of the cap.

Jan 11, 2015 | 10:33 AM

#24

Turbo X_J

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From: ☼ Blackhole Sun

Year: My Jeep is a GMC

Quote:

Originally Posted by ryrycars

I got it towed home and pulled the thermostat to find no coolant or water in the head or upper hose.

Jan 11, 2015 | 01:18 PM

#25

ryrycars

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Joined: Jul 2013

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From: Dayton, Ohio

Year: 1997

Model: Cherokee

Engine: 4.0 High Output

Toast?

Jan 11, 2015 | 04:46 PM

#26

djb383

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Joined: Nov 2009

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From: The Republic of TEXAS

Year: 1998

Model: Cherokee

Engine: 4.0L HO

I'm guessing he means possily cracked head, since there was no coolant in it.

Jan 13, 2015 | 04:21 PM

#27

ryrycars

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From: Dayton, Ohio

Year: 1997

Model: Cherokee

Engine: 4.0 High Output

We'll I got it all back together and I've been driving probably put 100 miles on it but I have a slight problem. It runs at or below 210 but the radiator cap leaks slightly. I just replaced the radiator and I've tried two different caps. Overflow tube isn't clogged either system is full as well as overflow. I'm stumped.

Jan 13, 2015 | 05:25 PM

#28

djb383

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Joined: Nov 2009

Posts: 8,172

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From: The Republic of TEXAS

Year: 1998

Model: Cherokee

Engine: 4.0L HO

Take those rad caps back under warranty.......maybe try a cap from the dealer. A new rad and new cap(s) shouldn't leak.

When u say "system is full as well as overflow", do u mean the bottle is about 1/3 full, motor COLD, and a little higher, motor HOT?

Last edited by djb383; Jan 13, 2015 at 05:29 PM.

Jan 13, 2015 | 10:14 PM

#29

ryrycars

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Joined: Jul 2013

Posts: 52

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From: Dayton, Ohio

Year: 1997

Model: Cherokee

Engine: 4.0 High Output

Yes. I fiddled around with it about an hour ago and found that the cap seamed loose on the filler neck. I bent the tabs a bit so it would fit better cleaned the seals and reinstalled it so far no leaks.