Overheating
#1
Newbie
Thread Starter
Join Date: Jun 2011
Location: Newburgh, Indiana
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: 6 Cylinder 4.0
Overheating
The other day I was using my AC for the first time this summer,usually I have my windows down but the heat index was 114 that day so I needed AC. So I drove probably around 25 miles like that and I stopped to go get some ice cream. When I came out and started my jeep it was shaking, so I backed up and pulled into another parking lot which was empty and the engine light came on. When I opened the hood the engine coolent was bubbling over. So I parked it and left the hood open for about 10 minutes. When I came out I turned my ac off and my car ran fiine with no temp issues. Any idea as to why this may have happened?
#2
CF Veteran
Join Date: Jul 2010
Location: 802
Posts: 4,930
Likes: 0
Received 3 Likes
on
3 Posts
Year: 99
Model: Cherokee
Engine: 4.0
my first thought is what condition is your coolant system in? Is the coolant good, are there any blocks in the lines, is the thermostat good. You said the CEL came on- get it on a code reader and find out what it says and go from there.. Its all guesses and headaches till then...
#4
Junior Member
Join Date: Sep 2010
Posts: 84
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2001
Model: Cherokee
sure feels like the thermostat. i had a similar experience. It got hot but over about a 5-10 mile stretch. it's an easy swap, want to say less than $20. probably not a bad idea to go ahead and do a flush, too. Start simple.
#5
Newbie
Thread Starter
Join Date: Jun 2011
Location: Newburgh, Indiana
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: 6 Cylinder 4.0
I had my thermostat replaced about a year ago. So it might be that but I don't think so, cuz it only overheats with my ac on.
#6
Seasoned Member
Join Date: Dec 2010
Location: NY
Posts: 275
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0
For others having problems with a coling system.
http://www.familycar.com/Classroom/CoolingSystem.htm
KEEP IN MIND- every 1 pound of pressure that the system is put under it raises the boil-point of the coolant
For example- the Glycol-water mix will now BOIL -because of the glycol at about 225 degrees NOT 212 anymore.
Adding pressure- for every 1 pound added it will raise the boiling point 3 degrees
Glycol-water mix under 10 pounds of pressure
225 + 30 ( 3 x 10 )= 255 DEGREE BOILING POINT
http://www.familycar.com/Classroom/CoolingSystem.htm
KEEP IN MIND- every 1 pound of pressure that the system is put under it raises the boil-point of the coolant
For example- the Glycol-water mix will now BOIL -because of the glycol at about 225 degrees NOT 212 anymore.
Adding pressure- for every 1 pound added it will raise the boiling point 3 degrees
Glycol-water mix under 10 pounds of pressure
225 + 30 ( 3 x 10 )= 255 DEGREE BOILING POINT
Trending Topics
#8
Senior Member
Join Date: Jan 2011
Location: Upstate N.Y
Posts: 689
Likes: 0
Received 1 Like
on
1 Post
Year: 2000.1999,1996
Model: Cherokee
Engine: 4.0
I'll bet you it shook because of vapor lock and next time dont shut it down right off when the a/c was just running, try letting it run a bit with the a/c off.(114) that day.But yes you should make sure everything is up to par with the cooling system.
#10
Seasoned Member
Join Date: Feb 2011
Location: Memphis,TN area
Posts: 424
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: ERH 4.0L 16 Power Tech
The other day I was using my AC for the first time this summer,usually I have my windows down but the heat index was 114 that day so I needed AC. So I drove probably around 25 miles like that and I stopped to go get some ice cream. When I came out and started my jeep it was shaking, so I backed up and pulled into another parking lot which was empty and the engine light came on. When I opened the hood the engine coolent was bubbling over. So I parked it and left the hood open for about 10 minutes. When I came out I turned my ac off and my car ran fiine with no temp issues. Any idea as to why this may have happened?
#11
Newbie
Thread Starter
Join Date: Jun 2011
Location: Newburgh, Indiana
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: 6 Cylinder 4.0
Originally Posted by waltermitty
Does the secondary cooling fan start when you turn the AC on?
Thread
Thread Starter
Forum
Replies
Last Post
scatgo
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
14
03-22-2021 09:56 AM
Ye Ol' Cherokee
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
10-09-2015 10:29 PM
LittleRed94
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
10-06-2015 08:09 PM
Crazynut1997
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
15
09-29-2015 08:14 PM
Joshuapn
Other Vehicles. Other Jeep models & cars and trucks of other makes
1
09-25-2015 08:16 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)