I have a 2000 XJ, the temperature control to adjust from cool to warm, or hot or whatever, doesn't seem to be working. I thought it was my blend door actuator, bought a new one, replaced it, nope not it. Bought a new dial cluster, nope not it, flushed heater core, nope not it. I have no idea where the fuse is at, or what fuse it is either. In order for me to get A/C, i have to manually move the blend door with the little plastic gear thing that goes with the blend door actuator and have it on full blast and the air keeps the door where it's at. Great A/C. Also, my jeep is weird, in the winter, the heat sucks. like it's barely warm. I don't know what going on. Any ideas and help too? haha

 

Ive done all the same things on my 99 2dr sport. Im also lost. someone help us both. Winter is coming and this is my WIFES daily driver... !!!

 

Confirm with your hands under the hood if the coolant hose going into the heater core is hot when the vehicle has been running long enough to reach close to operating temperature (5-10 minutes). If it -is- hot, and the heater core showed no problems when flushed, then the problem is inside the vehicle (blend door, etc.). If the coolant hose is -not- hot, then the problem is in the vehicles cooling system. For example the thermostat being missing or stuck open, never allowing the operating temperature to be reached.