1989 jeep cherokee v6 - JeepForum.com

 
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post #1 of 9 Old 12-11-2008, 02:44 PM Thread Starter
davizzel
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1989 jeep cherokee v6

hi i have a 1989 jeep cherokee limited v6 4.0L and i have recently replaced the heater core and the radiator and also the thermostat and my trucks temperature gauge goes all the way up to 210 degrees and overheats anybody have any ideas on what might be making it overheat. My antifreeze resevoir seem to like fill up and get alot of pressure all of a sudden. If anybody can help thanks!!!

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post #2 of 9 Old 12-11-2008, 02:51 PM
xjfever
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You probably have air trapped in the system. You can try blleding the air out and see if that helps. http://www.lunghd.com/Tech_Articles/..._Diagnosis.htm maybe this link will help some.

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post #3 of 9 Old 12-11-2008, 03:18 PM
Snowplow
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The 4.0 is a I6 not a V6
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post #4 of 9 Old 12-11-2008, 04:23 PM
crcashman
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210 is the normal operating temp
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post #5 of 9 Old 12-11-2008, 06:12 PM Thread Starter
davizzel
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Ok so I replaced those parts listed and my heater started working for about ten minutes then I turn of tha truck n the air is cold again! And also the temperature gauge marks 150 degrees I'm running out of ideas any help would be great thanks guys
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post #6 of 9 Old 12-11-2008, 07:06 PM
TwistedcaB-
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Quote:
Originally Posted by Snowplow View Post
The 4.0 is a I6 not a V6
yeah the 3.7 was a v6

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1991 XJ. 8" lift, 35" BFG KM2's. the new project
1990 XJ. 6.5 lift, 33" BFG ATKO's. SOLD : (
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post #7 of 9 Old 12-11-2008, 09:44 PM
tc90xjcherokee
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3.7 v6???

No such thing.

They had the 2.8 v6 (same as a chevy s-10)
The 4.0L Straight Six
And the 2.5L Four-popper

Only options for that year
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post #8 of 9 Old 12-11-2008, 09:54 PM
crcashman
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Quote:
Originally Posted by davizzel View Post
Ok so I replaced those parts listed and my heater started working for about ten minutes then I turn of tha truck n the air is cold again! And also the temperature gauge marks 150 degrees I'm running out of ideas any help would be great thanks guys
It sounds like your new thermostat was put in wrong. They are directional and its pretty easy to mess it up.
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post #9 of 9 Old 12-11-2008, 10:14 PM
TwistedcaB-
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Quote:
Originally Posted by tc90xjcherokee View Post
3.7 v6???

No such thing.

They had the 2.8 v6 (same as a chevy s-10)
The 4.0L Straight Six
And the 2.5L Four-popper

Only options for that year
haha your right i was thinking of the new ones...

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1991 XJ. 8" lift, 35" BFG KM2's. the new project
1990 XJ. 6.5 lift, 33" BFG ATKO's. SOLD : (
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