cshontz
NAXJA Forum User
- Location
- Lancaster, PA
My 96 XJ (100k) is running a little hot - always 220+, and the needle climbs into the red at idle or on the trail.
I just replaced the water pump, thermostat (cst 3839 195), and coolant. I think the temperature was a little high before performing this service, but I think it became worse after the service.
The temperature does goes down when I turn the heat on.
The aux fan seems to come on at the right temperature.
I tested the mechanical fan clutch using ESP, and it seems okay, but I can't confirm. Other clutch test recommendations?
My coolant level is good, and I assume it is free of air. Old coolant was discolored brown. New coolant looks relatively good so far.
Otherwise, the Cherokee is running well, but I want to bring it back down to 210. I'm all tapped out, so I don't want to spend much.
What steps do you think I should take to diagnose this high temperature problem?
I'm suspicious of the thermostat - although there is little basis for this suspicion. Any way to test its operation?
Should I have the cooling system pressure-checked? If so, what indicates good pressure? Is it a numerical value? I would have a local shop do this.
I did a search for this problem and came up with several hits that I found informative and useful. I'm posting this to get help or advice that is personal and specific to my case.
I just replaced the water pump, thermostat (cst 3839 195), and coolant. I think the temperature was a little high before performing this service, but I think it became worse after the service.
The temperature does goes down when I turn the heat on.
The aux fan seems to come on at the right temperature.
I tested the mechanical fan clutch using ESP, and it seems okay, but I can't confirm. Other clutch test recommendations?
My coolant level is good, and I assume it is free of air. Old coolant was discolored brown. New coolant looks relatively good so far.
Otherwise, the Cherokee is running well, but I want to bring it back down to 210. I'm all tapped out, so I don't want to spend much.
What steps do you think I should take to diagnose this high temperature problem?
I'm suspicious of the thermostat - although there is little basis for this suspicion. Any way to test its operation?
Should I have the cooling system pressure-checked? If so, what indicates good pressure? Is it a numerical value? I would have a local shop do this.
I did a search for this problem and came up with several hits that I found informative and useful. I'm posting this to get help or advice that is personal and specific to my case.