hey, its a str 2002 4.2 in black,
ive changed the dccv that you all told me about because the right side was blowing hot air even on cold, same situation maybee a tiny bit better any idea whats next ? thanks saf

oh every one says its a big job, its not to bad hours job in total

 

the DCCV blew the climate control module (CCM) circuit out; you will have to pull the climate control module/circuit board out and repair it or replace it,

plenty more information on this topic if you search,

 

hi thanks, after this thread i did google the problem, and it mentioned the rccm, since i was very impatient i went to my garage and did it in matter of minutes all great now thanks alot

 

Good advice but do this first.
Clamp all three hoses off that go to the heater core. They are on the left hand side of the engine bay when you are facing the car from the front.

You should now have no heat and the A/C should be working OK unless you have additional problems.

You can repair the RCCM yourself or you can send it in for repair. The repair place is in the US and I have not heard of anyone fixing them in the UK?
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What did they do?

 

When I did mine I also had to remove and repair the climate control module. There were 4 burn't copper traces on the PC board that I repaired and everything has worked perfect since then. Good luck