2006 Jeep Commander 5.7L Hemi, Owner and car-mechanic here...I do not know what engine you've got. But the have Hydraulically-Operated cooling fans on them, run off of the Power Steering system. Mine does not like traffic or idling, she runs cooler at 70-80MPH! You have fan, fan solenoid, and hydraulic lines to the fan.
SOURCE: 1998 jeep grand cherokee cooling problem
Your thermostat is stuck closed. It needs to be changed right away. By the way the operating temp on that motor is 160 degrees so you are running hot you have just been lucky so far. Good Luck
SOURCE: RPM opposite effect on oil guage
how many miles are on the vehicle this usually happens when the oi; pump or engine is wore out.
SOURCE: radiator fan not working replaced relay,temp
Check the wiring from the relay to the fan motor, and check the wiring from the fuse block. Basically check all wires that supply power to the fan motor, use a volt meter. Fan Relay (behind headlight, under battery) on the 2001 GC 4.0L are a piece of ****, I change mine almost yearly. The problem is their location, a high heat area prone to the elements. I understand that 2002 and newer, the location was changed and the problem solved. Relay might close the circuit when cold or at reasonable temps, but might open a circuit when it heats up, causing the problem.
we have a 2003 and it did the very same thing . Its called cooling fan relay it costs about 60.00 and is located behind the headlight assembly . not very hard to fix if you know anything about cars .
SOURCE: radiator fan not working replaced relay,temp
You didn’t mention replacing the temperature sensor located
on the block in the path of the ‘cooled’ coolant.
I can’t tell you any closer where to look for it since you
didn’t specify which engine you have.
This device is a solid state item called a thermistor.
With the air temperature around 77 degrees F and a 'cold' engine, it should
measure about 10,000 Ohms and hot, around 1,200 Ohms while disconnected from
its mating connector.
With the ignition on, and the connector disconnected from
the sensor, you should measure about 5 volts coming from the ECU.
If this has failed, the ECU is not getting the right info
back from the sensor and doesn’t know if the fan is needed or not.
1,524 views
Usually answered in minutes!
×