ac blows cold out of only 2 vents

[freedo]

side note for anyone reading this in the future. a possible test to make sure your AC is also working is to loop the heater core hoses so no hot water makes it to the heater core. temp fix if you are in a pinch and a good test if the heater valve is shot

[Clavurion]

Originally Posted by freedo

side note for anyone reading this in the future. a possible test to make sure your AC is also working is to loop the heater core hoses so no hot water makes it to the heater core. temp fix if you are in a pinch and a good test if the heater valve is shot

Or just compress them temporarily with hose clamps.

[Clavurion]

Originally Posted by freedo

after my commute home from work the 2 hoses going to the heater core were scorching hot (center console vent blows 140F when everything is set to full cold). looks like this maybe my problem. ordered a new one and hopefully installing this friday. if it ends up being the control voltage how would i diagnose that/fix it?

If it's not the valves then check the wiring between valves and IHKA with a multimeter. If it's IHKA then a new used module.

[freedo]

Originally Posted by Clavurion

If it's not the valves then check the wiring between valves and IHKA with a multimeter. If it's IHKA then a new used module.

heater control valve fixed it! thanks so much. that picture you posted really helped me understand why it was doing what it was doing. all vents blow cold, ac feels even colder now and i am a happy man. just in time for the outside temps to start dropping

[Vliet]

Originally Posted by freedo

heater control valve fixed it! thanks so much. that picture you posted really helped me understand why it was doing what it was doing. all vents blow cold, ac feels even colder now and i am a happy man. just in time for the outside temps to start dropping

Is this the part under the hood? Did you find out through testing? Feeling the hoses as described in your earlier post? This sounds exactly like the problem I am having.


Only cold air from the dash vents as the wheel is on three blue dots. Feet and other vents are (very) hot

[freedo]

Untitled by tim wilson, on Flickr