SEXJ96
NAXJA Forum User
- Location
- California
Hello,
I have a 96 XJ with around 140k on the clock. Ive owned the car for around 3 years now. Last june, I installed a CSF 2 row all aluminum radiator, a new fan clutch, a 97+ electric fan, a Stant 195* thermostat, new upper and lower radiator hoses (with the spring in the lower radiator hose). I was in california at the time and the jeep was running in california weather on both highway and city with the AC on without ever going above 220.
Recently, I moved to virginia and in the last 2 months i started noticing that when on the highway (65-75 mph) and with the AC on, the jeeps temperature would rise to the 3/4 mark right before red zone. I would instantly turn off the AC, turn on the heat and decrease my speed. This brings my temperature down in just a minute or two max. Without the AC, the car would get close to the 3/4 mark on the gauge but would not hit it. Under acceleration (3rd gear, rpm between 3-4k and speeds above 65-70) without AC the car would hit the 3/4 mark.
I was also experience squealing noises with increasing rpm espeically when the AC was turned on and the water pump pulley had some play in it. Last weekend I replaced the water pump with a gates pump, replaced the idler pulley, and replaced my harmonic balancer. I tightened the belt to 180-200 ft.lbs using a kricket 2 and the squealing was gone (even with AC on) and everything was running great. New coolant was added and I tried making sure no air bubbles were left in the system, I squeezed the hoses and shook the car, and kept on refilling my radiator for around 2 hours (was working on another car in the mean time) whenever water level went down. Coolant reservior is full.
Today, on the highway, I wanted to test my cooling system for the first time with the new water pump, belt, etc.. so I turned on the AC and drove the car at around 70mph shifting between 3rd and 4th gear (rpm about 3000 and 2200 respectively). You guessed it, the gauge went up to the 3/4 mark and I had to turn the AC off, turn heat on, decrease speed and it cooled back down in around a minute if not less.
I am at loss. Is it not really overheating and my gauge/sensors are faulty? I am missing something in the cooling system? Do I have air bubbles? I am frustrated as all the cooling system parts are new and I cannot explain what is happening. Please let me know what you guys think.
Also, the electric fan turns on at around 220, and it never overheats in the city no matter style of driving or AC on or off.
Please help me get this figured out.
Thanks,
Laith
I have a 96 XJ with around 140k on the clock. Ive owned the car for around 3 years now. Last june, I installed a CSF 2 row all aluminum radiator, a new fan clutch, a 97+ electric fan, a Stant 195* thermostat, new upper and lower radiator hoses (with the spring in the lower radiator hose). I was in california at the time and the jeep was running in california weather on both highway and city with the AC on without ever going above 220.
Recently, I moved to virginia and in the last 2 months i started noticing that when on the highway (65-75 mph) and with the AC on, the jeeps temperature would rise to the 3/4 mark right before red zone. I would instantly turn off the AC, turn on the heat and decrease my speed. This brings my temperature down in just a minute or two max. Without the AC, the car would get close to the 3/4 mark on the gauge but would not hit it. Under acceleration (3rd gear, rpm between 3-4k and speeds above 65-70) without AC the car would hit the 3/4 mark.
I was also experience squealing noises with increasing rpm espeically when the AC was turned on and the water pump pulley had some play in it. Last weekend I replaced the water pump with a gates pump, replaced the idler pulley, and replaced my harmonic balancer. I tightened the belt to 180-200 ft.lbs using a kricket 2 and the squealing was gone (even with AC on) and everything was running great. New coolant was added and I tried making sure no air bubbles were left in the system, I squeezed the hoses and shook the car, and kept on refilling my radiator for around 2 hours (was working on another car in the mean time) whenever water level went down. Coolant reservior is full.
Today, on the highway, I wanted to test my cooling system for the first time with the new water pump, belt, etc.. so I turned on the AC and drove the car at around 70mph shifting between 3rd and 4th gear (rpm about 3000 and 2200 respectively). You guessed it, the gauge went up to the 3/4 mark and I had to turn the AC off, turn heat on, decrease speed and it cooled back down in around a minute if not less.
I am at loss. Is it not really overheating and my gauge/sensors are faulty? I am missing something in the cooling system? Do I have air bubbles? I am frustrated as all the cooling system parts are new and I cannot explain what is happening. Please let me know what you guys think.
Also, the electric fan turns on at around 220, and it never overheats in the city no matter style of driving or AC on or off.
Please help me get this figured out.
Thanks,
Laith