first i want to start by saying that i have read every thread an post about this an to no avail nothing.

ok

i have a 94 q45t an my climate control only blows cold air even if i set the thermostat to 85 it still only blows cold an the fan only works on high. what is wrong with this an how can i fix it? also i have seen threads about changing the cabin air filter but i dont know where it is an how to change it, the fsm does not give me that imformation. but can someone give me a link to see how this is done?

There is no cabin filter in your Q.

Time to run the self diagnostic from the FSM (factory service manual). Let us know what codes you get... if you don't have your copy of the FSM you can download it here.

Heath