Mudd
NAXJA Forum User
- Location
- Bethel Acres, Oklahoma
1988 XJ 4.0 Auto 4x4 A/C (not working) 95,000 miles
I have the original cooling system. I bought the Jeep during cool weather but the owners said they had a overheating problem and the bottle and hoses were replaced. They suggested I keep an eye on the temp.
The temp has been running just below or right at 210. No problem there. But now the outside air temp is rising as summer approaches and we have had a few days in the upper 80's and low 90's and my coolant temp slowly but steadily rises toward, but not into, the red. This happens on a 25 mile interstate commute at a steady speed of 75mph. Instead of stopping at 210 the gage keeps gradually rising during the entire trip and is just about to reach the red when I get to my destination.
When the weather drops back into the 70's the temp gage stays right at 210 and all is well.
The electric fan will engage when the temp rises. It sounds to me like the radiator may need cleaned or boiled or whatever it's called since the cooling system seems to be doing its job until amabient temp gets high enough that the radiator just can't flow enough to handle it.
I know the XJ's have had a few cooling issues so I thought I'd see if anyone has had this same experience or has any suggestions for what I might check.
thanks in advance,
John
I have the original cooling system. I bought the Jeep during cool weather but the owners said they had a overheating problem and the bottle and hoses were replaced. They suggested I keep an eye on the temp.
The temp has been running just below or right at 210. No problem there. But now the outside air temp is rising as summer approaches and we have had a few days in the upper 80's and low 90's and my coolant temp slowly but steadily rises toward, but not into, the red. This happens on a 25 mile interstate commute at a steady speed of 75mph. Instead of stopping at 210 the gage keeps gradually rising during the entire trip and is just about to reach the red when I get to my destination.
When the weather drops back into the 70's the temp gage stays right at 210 and all is well.
The electric fan will engage when the temp rises. It sounds to me like the radiator may need cleaned or boiled or whatever it's called since the cooling system seems to be doing its job until amabient temp gets high enough that the radiator just can't flow enough to handle it.
I know the XJ's have had a few cooling issues so I thought I'd see if anyone has had this same experience or has any suggestions for what I might check.
thanks in advance,
John