Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

89 Cherokee overheating

Thread Tools
 
Search this Thread
 
Old 11-13-2016, 04:45 PM
  #1  
Newbie
Thread Starter
 
Mickwarr's Avatar
 
Join Date: Nov 2016
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default 89 Cherokee overheating

Ok so i replaced radiator, water pump, no thermostat, no leaks,clutch fan shows no sighn of failure, auxiliary fan works just fine, and ive bypassed the heater core and it ran just fine for 3 weeks Then started overheating

I had suspension of head gastket, so i did a block test. ...i passed i pulled all plugs no water on them...no milkshake.. did valve cover gastket 2 weeks ago super clean inside......

If anyone has any suggestions ild very much appreciate it
Old 11-13-2016, 05:35 PM
  #2  
CF Veteran
 
Martlor13's Avatar
 
Join Date: Feb 2016
Location: Northern New Mexico
Posts: 3,683
Likes: 0
Received 7 Likes on 6 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
Default

Originally Posted by Mickwarr
Ok so i replaced radiator, water pump, no thermostat, no leaks,clutch fan shows no sighn of failure, auxiliary fan works just fine, and ive bypassed the heater core and it ran just fine for 3 weeks Then started overheating

I had suspension of head gastket, so i did a block test. ...i passed i pulled all plugs no water on them...no milkshake.. did valve cover gastket 2 weeks ago super clean inside......

If anyone has any suggestions ild very much appreciate it
Replace the fan clutch it's not too expensive plus you can't really diagnose if it's bad or not. Also, consider converting to an open system
Old 11-13-2016, 05:36 PM
  #3  
CF Veteran
 
Martlor13's Avatar
 
Join Date: Feb 2016
Location: Northern New Mexico
Posts: 3,683
Likes: 0
Received 7 Likes on 6 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
Default

And put a thermostat back in
Old 11-13-2016, 07:56 PM
  #4  
Newbie
Thread Starter
 
Mickwarr's Avatar
 
Join Date: Nov 2016
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default

Well I'm willing to try anything would you recommend motor rat thermostat or Mopar

Although the me has never had one since i bout it

Also I've heard about upgrading to an open system maybe like A3 core what are the benefits to an open system other than just the radiator cap
Old 11-13-2016, 08:43 PM
  #5  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,876
Received 1,526 Likes on 1,238 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Mopar thermostat 52028186AC. Amazon has them.

Nevermind a different radiator.

The cause of your overheating could be as simple as a bad cap on the pressure bottle.
Try a NAPA 703-1396 for a better seal. Most all other replacement caps are chinese junk.

Replace the fan clutch.
Old 11-13-2016, 09:03 PM
  #6  
CF Veteran
 
Martlor13's Avatar
 
Join Date: Feb 2016
Location: Northern New Mexico
Posts: 3,683
Likes: 0
Received 7 Likes on 6 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
Default

Originally Posted by cruiser54
Mopar thermostat 52028186AC. Amazon has them.

Nevermind a different radiator.

The cause of your overheating could be as simple as a bad cap on the pressure bottle.
Try a NAPA 703-1396 for a better seal. Most all other replacement caps are chinese junk.

Replace the fan clutch.
This guy is the king when it comes to renix Era op. If you listen to anyone, let it be him. 2/3 of my advice was good though
Old 11-13-2016, 09:06 PM
  #7  
Newbie
Thread Starter
 
Mickwarr's Avatar
 
Join Date: Nov 2016
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default

Will do ill keep yall updated. .
Old 11-13-2016, 09:09 PM
  #8  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,876
Received 1,526 Likes on 1,238 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by Martlor13
This guy is the king when it comes to renix Era op. If you listen to anyone, let it be him. 2/3 of my advice was good though
LOL!!
Old 11-13-2016, 09:26 PM
  #9  
CF Veteran
 
Martlor13's Avatar
 
Join Date: Feb 2016
Location: Northern New Mexico
Posts: 3,683
Likes: 0
Received 7 Likes on 6 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
Default

Originally Posted by cruiser54
LOL!!
....

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 09:01 PM.