The title of this post should say heater does not blow "hot"


Bought this "new" 2000 xjr 54K miles.

Did a few engine mods, just got it back together running like a swiss watch.

Thought it would be a good time to run through everything to see what fix it list I needed to make...

The A/C blow cold, but the heater does not blow hot....fan works fine... what is the next step to fix this??

 

Problem solved. Works fine now. I didn't do anything, just went for a drive, set temp to hot, and after a few minutes it found the "cremate" setting.

 

That's the best type of repairs...

If it happens again, check that the Aux Heater Pump is working. It's a common failure on these cars. Without it, the water barely flows through the heater coil, if at all.