Aircon not switching to heater ?

**iceey** · 20-01-2012 01:39 AM

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** · 20-01-2012 02:35 AM

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

**iceey** · 20-01-2012 03:43 AM

Originally Posted by djt

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

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

**ECU-MAN** · 20-01-2012 11:12 AM

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

**stndrd** · 23-01-2012 11:51 AM

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

**hmetro24** · 23-01-2012 07:44 PM

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

**dougie_504** · 25-01-2012 05:49 PM

Originally Posted by hmetro24

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** · 25-01-2012 06:55 PM

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** · 28-01-2012 07:06 PM

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

**hmetro24** · 28-01-2012 07:12 PM

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.