I had a bad radiator on mine, had it replaced and is all good now. Still! I still get temperatures from 218 up to 238 sometimes, depending on high grade hills or mountains. Also depends on the weather, I live in Tucson Arizona and it gets pretty steamy here! And is totally normal for my temperature to change depending on driving conditions. But it never has overheated though! I asked the technician at the dealer, and he said it’s totally normal to get those kinds of temperatures reading, or your gauge to move slightly a hair past the half mark. He also said the Pentastar engines runs hotter than other engines.
Same here, my 2013 has always done it. Annoying. I just put a new radiator and thermostat housing in it. Still does it. It’s a Motorad housing. Maybe it’s bad out of the box?
I haven’t met someone with an earlier model 3.6L JK that it doesn’t happen to. I don’t think there’s anything necessarily wrong with it, just gotta go slower up hills I guess!
Too late, I guess. 95°F uphill on highway. 2010, 3.8L JL 4 door . Then lost full power, began hearing a clunk. I don't think the fan was coming on. Normally it will run after I shut her off and keep cooling. Fan didn't stay on- so I don't know if it was even working. Was hot as H. I am almost sure I am getting a rod knock. Sunnuva B.
The fan kicks on by exact temperature. The needle gauge isn’t exact, just a range. If you plug into the OBD port you can see your exact temp. It will change up or down and the needle won’t be moving at the same rate
First, stop relying on the nonlinear gauge. It stays centered from 180 to 230. Use your digital readout, at least for 2015 and later JK. I live in Evergreen and drive I70 almost daily. Same issues. It will quickly rise to 245 on highway no matter what. New Ron Davis radiator, new RIP 180 high flow thermostat. New plugs. New coils. High press cap. Tried it all, nothing works. It is not designed to function at this altitude under sustained load. No factor of safety in cooling. Works st sea level. Works all day in 100 degree heat on flat terrain. Can’t drive up I70. Bad design. PERIOD.
First, stop relying on the nonlinear gauge. It stays centered from 180 to 230. Use your digital readout, at least for 2015 and later JK. I live in Evergreen and drive I70 almost daily. Same issues. It will quickly rise to 245 on highway no matter what. New Ron Davis radiator, new RIP 180 high flow thermostat. New plugs. New coils. High press cap. Tried it all, nothing works. It is not designed to function at this altitude under sustained load. No factor of safety in cooling. Works st sea level. Works all day in 100 degree heat on flat terrain. Can’t drive up I70. Bad design. PERIOD.
I had a bad radiator on mine, had it replaced and is all good now. Still! I still get temperatures from 218 up to 238 sometimes, depending on high grade hills or mountains. Also depends on the weather, I live in Tucson Arizona and it gets pretty steamy here! And is totally normal for my temperature to change depending on driving conditions. But it never has overheated though! I asked the technician at the dealer, and he said it’s totally normal to get those kinds of temperatures reading, or your gauge to move slightly a hair past the half mark. He also said the Pentastar engines runs hotter than other engines.
My 2017 jk does it too but it doesn’t really concern me because it comes back down. I live in Texas and it also only does it in the summer.
Same here, my 2013 has always done it. Annoying. I just put a new radiator and thermostat housing in it. Still does it. It’s a Motorad housing. Maybe it’s bad out of the box?
I haven’t met someone with an earlier model 3.6L JK that it doesn’t happen to. I don’t think there’s anything necessarily wrong with it, just gotta go slower up hills I guess!
Same exact issue
Too late, I guess.
95°F
uphill on highway. 2010, 3.8L
JL 4 door .
Then lost full power, began hearing a clunk. I don't think the fan was coming on. Normally it will run after I shut her off and keep cooling. Fan didn't stay on- so I don't know if it was even working. Was hot as H.
I am almost sure I am getting a rod knock.
Sunnuva B.
Why fans run full spoed without shutting of even if it goes to mid point on the gauge
The fan kicks on by exact temperature. The needle gauge isn’t exact, just a range. If you plug into the OBD port you can see your exact temp. It will change up or down and the needle won’t be moving at the same rate
Bad thermostat… temp gage shouldn’t go past the 1/2 mark
Replaced thermostat. Temp sender. Water pump. Radiator still having issues. Bled the system still having issues
First, stop relying on the nonlinear gauge. It stays centered from 180 to 230. Use your digital readout, at least for 2015 and later JK. I live in Evergreen and drive I70 almost daily. Same issues. It will quickly rise to 245 on highway no matter what. New Ron Davis radiator, new RIP 180 high flow thermostat. New plugs. New coils. High press cap. Tried it all, nothing works. It is not designed to function at this altitude under sustained load. No factor of safety in cooling. Works st sea level. Works all day in 100 degree heat on flat terrain. Can’t drive up I70. Bad design. PERIOD.
First, stop relying on the nonlinear gauge. It stays centered from 180 to 230. Use your digital readout, at least for 2015 and later JK. I live in Evergreen and drive I70 almost daily. Same issues. It will quickly rise to 245 on highway no matter what. New Ron Davis radiator, new RIP 180 high flow thermostat. New plugs. New coils. High press cap. Tried it all, nothing works. It is not designed to function at this altitude under sustained load. No factor of safety in cooling. Works st sea level. Works all day in 100 degree heat on flat terrain. Can’t drive up I70. Bad design. PERIOD.
dose over 200f