Overheating issue WTH?!?!?!
05-22-2012 | 10:25 PM
#18
Member
Joined: Mar 2012
Posts: 187
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From: Las Vegas, Nevada
Year: 1990
Model: Cherokee
Engine: 4.0L 6Cyl L8
Originally Posted by Pab's
Alright so I went to go use the temp gun while the gauge was giving me a reading of 260* I checked the thermostat housing and got a reading of 217* & got a reading of the back of the head of 206*. I figured it was safe to drive so after calling the dealership to get the correct part number for the coolant temp switch I went to O'Reilly's and picked the right sensor up went home and poped it into place.
After it was installed I let it idle for 10 minutes and the temp stayed steady at under the 210* marker I went out for a hard 15 minute drive and the temp was around 220*
After it was installed I let it idle for 10 minutes and the temp stayed steady at under the 210* marker I went out for a hard 15 minute drive and the temp was around 220*
05-22-2012 | 10:35 PM
#20
Thread Starter
Member
Joined: Mar 2012
Posts: 128
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Model: Cherokee
05-22-2012 | 10:53 PM
#21
Senior Member
Joined: May 2010
Posts: 882
Likes: 1
From: MI 48642
Year: 1996
Model: Cherokee
Engine: 4.0
The sender is just for the gauge and is on the back of the block. I am having a very similar issue where it reads just before the red when it is actually at 210. That issue was both before and after the rad replacement and whole system flush. Did the part you were having issues with come from autozone by chance?
05-22-2012 | 11:17 PM
#22
Member
Joined: Mar 2012
Posts: 187
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From: Las Vegas, Nevada
Year: 1990
Model: Cherokee
Engine: 4.0L 6Cyl L8
Originally Posted by Pab's
What are you talking about sir? Post a pic please.
After a little stop and go traffic and it was higher before I got home..
Edit: haven't seen any boil over yet either.
Last edited by Johnthepanpire; 05-22-2012 at 11:20 PM.
05-22-2012 | 11:26 PM
#23
Member
Joined: Mar 2012
Posts: 187
Likes: 0
From: Las Vegas, Nevada
Year: 1990
Model: Cherokee
Engine: 4.0L 6Cyl L8
Originally Posted by Fsher21
The sender is just for the gauge and is on the back of the block. I am having a very similar issue where it reads just before the red when it is actually at 210. That issue was both before and after the rad replacement and whole system flush. Did the part you were having issues with come from autozone by chance?
05-23-2012 | 12:26 AM
#28
Senior Member
Joined: Jan 2012
Posts: 720
Likes: 1
From: vanburen
Year: 1995 &2000
Model: Cherokee
Engine: 4.0
Best way I found to flush the system is with aluminum brightner drain all anti freeze add all water let it run to operating temp 210 and put a cup of aluminum brightner in the radiator and drive it for a half hour then drain all the water after it cools then flush it with a water hose for 20 minutes or till you think its all out and clear water is showing, them fill back up with antifreeze and water, I've done this to about every vehicle I've owned, just my 2cents
05-23-2012 | 12:27 AM
#29
Senior Member
Joined: Jan 2010
Posts: 536
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From: Lyons, Oregon
Year: 1991
Model: Cherokee
Engine: 4.0 HO
Sorry I didn't notice what year yours was, my 91 has two temp sensors, one on the tstat housing, this is for the ecu, the other one is on the back of the head drivers side, for gauge or idiot light. Coach.