I have an s type jag 2001 30 v6
The heater will only blow hot air out even when i set it to low or cold
it was just the drivers side to start now its the passenger side too
the only way i can get some cold air is if i vent the air to the screen
and thats only on the passenger side its cold the drivers side is hot

its pi**ing me off as i dont know what to do
if i turn the heater off the car steams up and if i open the vents it gets too hot
please help me
thanks

 

Check out threads about the DCCV and the control module. Most likely one or both are the culprits. Frequently the DCCV goes first and then the control module gets fried soon afterwards.

 

Good advise from Carelm!