7Th Gen Celica Heating Problem

[Applellial]

Hi guys just wondering if anyone can help me with this one. I got a 52 plate(late 2002 7th gen) celica and the heating suddenly stoped working. The fans still blow but the air is cold no matter what settings you change or were u set the fans to blow. I was driving for around a hour, the enginer was the usual temp and nothing felt wrong with the car but the air was still cold! Eventually it started to get abit warmer but not by much and after that amount of time something is clearly wrong.

Anyone else had any similar problems and knows what it is/how to fix it, or got any clues on what it could be. Dont exactly want to take it to some dodgy garage and they tell me its varoius parts that cost alot if its really a cheap fix and taking it to the dealer always end up rediculously expensive.

thnx for the help in advanced

[Bitter]

full of coolant? no air in the system? where is the temperature gauge reading?

[Hawker22]

Are you sure that you are changing anything when you turn the control knob to its various locations? The knob end of the short control cable may be broken, preventing any sort of selection.
The control cable for the heat/ cool control may hve broken or slipped off the arm. Take a look up under the dash just above the gas pedal.