I have replaced everything short of the water pump. Truck runs at just over 210 typically. Unless it goes over 70 MPH. I have flushed the system, replaced the t-stat twice, replaced the radiator and both hoses, cleaned the radiator with hose from front to back and back to front.
It will jump up to the bottom of the red, until I back off the throttle for a few minutes, then it will drop back down. No leaks, no overheating, heater works. I also bought a new fan clutch (not that it was logical because of the highway speed, just because I've tried everything else) but that did nothing. The Jeep stays right at I guess about 220 during normal city driving, and as long as I keep it under 70 MPH it will stay the same on the highway as well. it does have aftermarket wheels and the tires are slightly larger than stock, but I didn't have this issue when I got the truck (with the same wheels/tires).
I'm losing hair over this because it seems to not make any sense. Could it be a sensor? it seems the temp sense is working fine..
HELP!
Thanks in advance.
It will jump up to the bottom of the red, until I back off the throttle for a few minutes, then it will drop back down. No leaks, no overheating, heater works. I also bought a new fan clutch (not that it was logical because of the highway speed, just because I've tried everything else) but that did nothing. The Jeep stays right at I guess about 220 during normal city driving, and as long as I keep it under 70 MPH it will stay the same on the highway as well. it does have aftermarket wheels and the tires are slightly larger than stock, but I didn't have this issue when I got the truck (with the same wheels/tires).
I'm losing hair over this because it seems to not make any sense. Could it be a sensor? it seems the temp sense is working fine..
HELP!
Thanks in advance.