i drive a 2015 jeep wrangler sport with the 3.6 v6. i had my radiator, radiator fan, thermostat, water pump, and temperature sensor replaced. the jeep reads 226 around town with the radiator fan constantly on high. how ever at highway speeds i cant exceed 70 to 75 mph without my temps shooting to 230+ any idea what this could be? the jeep has over heated one time which is why i replaced all of the cooling system,
Overheating at highway speeds
- Thread starter mulletmanjk_noah
- Start date
we used a burping funnel and also tried to put the front end on a jack we never witnessed any more air escape
Did you use OEM parts, specially for the sensor? I suppose the thermo could be bad and not opening all the way. So it never drops below 226?
1 of 2 probable culprits: Temp sensor and thermostat.
1. T-stat. There are a bunch of cheaper versions out there in the $25-40 range, but the MOPAR replacement, with housing, is around $53.
2. Temp sensor: Again, cheaper versions in the $16-24 range, but the MOPAR replacement will run you about $38.
I have to believe it's one of these unless the fan somehow got screwed up when you replaced it. Check the fuses and wiring on the new fan. Has it ever run at any speed except high? If it runs at both low & hi speeds, the fan is not the issue.
And one more thing- if the t-stat was stuck in the open position, you'd see the temp gauge all over the map, from low to high, with the higher temps occurring when the Jeep is standing still.
1. T-stat. There are a bunch of cheaper versions out there in the $25-40 range, but the MOPAR replacement, with housing, is around $53.
2. Temp sensor: Again, cheaper versions in the $16-24 range, but the MOPAR replacement will run you about $38.
I have to believe it's one of these unless the fan somehow got screwed up when you replaced it. Check the fuses and wiring on the new fan. Has it ever run at any speed except high? If it runs at both low & hi speeds, the fan is not the issue.
And one more thing- if the t-stat was stuck in the open position, you'd see the temp gauge all over the map, from low to high, with the higher temps occurring when the Jeep is standing still.
If you have a IR temp gun check the engines temp, then compare it to the dash's temp.
What was going on in the beginning that caused you to change everything?
What was going on in the beginning that caused you to change everything?
He said the JK overheated one time and he replaced everything.
It's akin to using a tourniquet on a mosquito bite, but to each his own.
origionally the fans went out so i replaced those then when it started to run hot we replaced the radiator and thermostat and the coolant sensor to take all of those out of the picture
i had misspoken it had overheated originally then once again after we replaced the fans
the thermostat and temperaturee switch are both mopar parts due to the motor getting very hot when it overheated i fear a head gasket issue
yes the fans werwe also oem and there is no coolant loss present t6hats what is throwing me for a loop
I was kinda thinking a bad headgasket but when that's the issue it usually pushes coolant out the overflow jug.
You can get test kits to check for exhaust gasses in the coolant just to rule that out.
yeah my auto instructor has one and im gonna bring it in to test it im not too sure that is the problem though becuase i have barely any symptoms of a headgasket failure
Get a pressure tester and see if it holds pressure.
Did you try replacing the radiator cap?