1999 overheating problem
04-11-2018 | 10:33 PM
#16
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Joined: Apr 2018
Posts: 10
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Model: Cherokee(SJ)
Test and diagnose, don't start throwing parts at it.
Get a test kit for exhaust gasses in the coolant. Then you will know if it's a cracked head or not.
If not, next try a free fix. Dump some liquid laundry detergent or Dawn dishwashing liquid in your radiator, and run it like that for a week. Then flush it again.
Last stop is replacing parts.
Get a test kit for exhaust gasses in the coolant. Then you will know if it's a cracked head or not.
If not, next try a free fix. Dump some liquid laundry detergent or Dawn dishwashing liquid in your radiator, and run it like that for a week. Then flush it again.
Last stop is replacing parts.
i cant drive it. As soon as it gets warm it overheats
04-12-2018 | 12:31 AM
#17
CF Veteran
Joined: Nov 2017
Posts: 3,700
Likes: 236
From: Groton, MA
Year: 1995
Model: Cherokee(XJ)
Engine: I6 4.0L
In response to the radiator being 2 years old:
If you had gunk/brownish crud that went through the radiator, it could be 2 days old and still get crud blocking the passages.I would disconnect the upper and lower hoses and use a garden hose to flush it at each point (cap, upper hose, lower hose) similar to the fore and back-flush on a heater core.Even better, pull it out and flip it so you can run the hose+gravity.Mark made an excellent point about testing for a cracked head, I'd do the test kit before screwing around with the flushing/radiator.
04-13-2018 | 11:42 AM
#18
CF Veteran
Joined: May 2012
Posts: 7,964
Likes: 958
From: Lost in the wilds of Virginia
Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
04-14-2018 | 01:30 PM
#19
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Newbie
Joined: Apr 2018
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Model: Cherokee(SJ)
Radiator was cleaned, and pressure tested. Checked out good. Cracked head is The only thing it could be, right? Guess I’ll tear it back apart, have it tested. Also does anyone know where to buy front end parts?
04-14-2018 | 05:59 PM
#20
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Joined: Feb 2018
Posts: 152
Likes: 0
From: Toledo
Year: 1998
Model: Cherokee(XJ)
Engine: 4.0
I myself like Advanced Auto Parts, Napa or Ebay in that order. Advanced steering components are Moog which imho are one of the best manufactures when it comes to ball joints, tie rods etc. Napa parts are good but the warranty is a pain in the butt from my experience, Ebay is good if you can wait.
04-14-2018 | 10:02 PM
#22
CF Veteran
Joined: Nov 2017
Posts: 2,420
Likes: 250
From: Southern Texas (former AZ & Aus)
Year: 1999
Model: Cherokee(XJ)
Engine: I6 4.0L
Unless the OP checks the OIL and there's evidence of coolant contamination.... but if it's from checking the radiator... those things can get pretty nasty. And honestly are pretty cheap to replace.
04-15-2018 | 07:40 PM
#24
Member
Joined: Jan 2018
Posts: 186
Likes: 7
From: Poulsbo,Wa
Year: 1994
Model: Cherokee (XJ)
Engine: 4.0
Head Gasket leak
Test and diagnose, don't start throwing parts at it.
Get a test kit for exhaust gasses in the coolant. Then you will know if it's a cracked head or not.
If not, next try a free fix. Dump some liquid laundry detergent or Dawn dishwashing liquid in your radiator, and run it like that for a week. Then flush it again.
Last stop is replacing parts.
Get a test kit for exhaust gasses in the coolant. Then you will know if it's a cracked head or not.
If not, next try a free fix. Dump some liquid laundry detergent or Dawn dishwashing liquid in your radiator, and run it like that for a week. Then flush it again.
Last stop is replacing parts.
04-18-2018 | 06:21 PM
#26
CF Veteran
Joined: May 2012
Posts: 7,964
Likes: 958
From: Lost in the wilds of Virginia
Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
04-18-2018 | 08:05 PM
#27
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Model: Cherokee(SJ)
04-18-2018 | 10:05 PM
#28
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Joined: May 2012
Posts: 7,964
Likes: 958
From: Lost in the wilds of Virginia
Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
I'm sorry, I didn't notice you are the OP. 
I think there is a thread around here somewhere which details which heads are interchangeable. I think it should be a sticky, but I couldn't find it.
You might be able to figure it out from the motor interchangeability sticky.
To atone for giving you a hard time, I checked out Clearwater's site. What I see there looks like it won't work. I looked up a 99 head, and this is what they say about it:
Then I looked up a 96, and they don't even list Cherokees for that year.
But others may know for sure.
I think there is a thread around here somewhere which details which heads are interchangeable. I think it should be a sticky, but I couldn't find it.
You might be able to figure it out from the motor interchangeability sticky.
To atone for giving you a hard time, I checked out Clearwater's site. What I see there looks like it won't work. I looked up a 99 head, and this is what they say about it:
Jeep CHEROKEE 4.0 LTR 6 Cyl OHV
Fits: 1999 - 2007
Casting No: 0331
Additional Applications:
Jeep - CHEROKEE 1997 to 2007
Jeep - CJ-SERIES 1997 to 2007
Jeep - JEEP 1997 to 2007
Jeep - WRANGLER 1997 to 2007
Fits: 1999 - 2007
Casting No: 0331
Additional Applications:
Jeep - CHEROKEE 1997 to 2007
Jeep - CJ-SERIES 1997 to 2007
Jeep - JEEP 1997 to 2007
Jeep - WRANGLER 1997 to 2007
But others may know for sure.
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