Hi all,

I have a 2003 d2 SE with about 160k miles. It just won't stop overheating.
​​​​​I replaced the water pump as the bearing failed. It ran fine for a week or so but started overheating again. I drained and flushed the system and it didn't work. I then replaced the thermostat with a 180° but still nothing. I've replaced the radiator next and still overheating. I then replaced the thermostat again but nothing. Finally, I replaced the fan clutch and fan and again, still overheating. Heater and ac work fine.
I'm using zerex g05 for coolant and diluting to about 70%water.
I just ordered a new aux fan to see if that is it but I'm at a loss. I'm not losing coolant, there is no air in the system, and oil looks clean.
Any thoughts?

 

Hi D2. Welcome to the forum. You should post your technical questions in the Disco 2 section of this forum, you’ll get way more traffic. I’m not the expert, but my first guess would be the part that you just replaced, a bad water pump.

 

Thank you. I was hoping that it wouldn't be that because it was a pain to replace but I'll give that a shot. I'll also take your advise on posting in the D2 section. Thanks again!