My 2003 I think has some evil spirits roaming around in it! If you all haven't noticed its gotten a bit colder out these days. Well my heater sometimes will blow nice warm air and other times its not even warm?? The car could be warmed up (I know because of temp gauge). I have checked for codes and none are showing? What could this be?

Have you checked all your fuses? I know that this may be a long shot but it is worth trying! Good luck and let me know the outcome!

Greg.

is it all of your vents or just the driver's side? Your mixer could be sticking, Try resetting it by pulling the fuse or battery cable for a few minutes... This will also rest the acctuators for the driver and passenger vents.

It's possible your HVAC unit is going o the fritz as well, is this a CJ2 (dual climate control)?

This happened to mine last year and the problem was the splitter or what ever it is called! I think Tim nailed it either way!:cheers: