Aircon not switching to heater ?

[iceey]

hey guys

i recently just found out that my aircon wont go hot .. ive checked the back part of the switch and everything is still there .. just wondering what it could be ?

[djt]

Is the temperature sliding thing loose as? Like it has no resistance?

[iceey]

Is the temperature sliding thing loose as? Like it has no resistance?


umm no it feels pretty normal .. not loose at all ..

[ECU-MAN]

check the heater knob moves the heater tap under the engine bay when you move from hot to cold

[stndrd]

^ and also check that the internals of the heater tap have not stuck shut

[hmetro24]

If it's sliding from cold ><hot, and not giving hot air, maybe heater core is clogged.

[dougie_504]

If it's sliding from cold ><hot, and not giving hot air, maybe heater core is clogged.

My thoughts also. Not a cheap either I think :(

[hmetro24]

you can do a simple test for the heater core, if the coolant is passing through.
Start the car until it heat Up,
slide it to Heat.
Open the hood and look at the firewall, you should see two hoses going through the Firewall,
Touch them with hand, Both should be Hot(warm) If 1 is warm and 1 is cold, that's will tell that it's possibly Clogged.

[Grayfox]

Eric The Car Guy shows you how to unclog a heater core.

http://www.youtube.com/watch?v=dcL_0TWeZJY&

[hmetro24]

In case its heater core, and you do not have air compressor, get garden hose and some radiator cleaner. poor a little bit of radiator cleaner inside the heater hose and use the garden hose pressure to push all the dirt out.