When my AC runs I get hot air coming from the drivers side vents...and answers????? 1994 C-220

 

is your A/C using duo valves?

if it does, one of the duo valve that goes to that side is defective.

you can find it oon the front right side of engine compartment.

 

I'll check it out and let you know...there was a point this summer ....I was going fairly fast....a little over 90 when it switched on for about two mins. then it switched back again...I thought it may be a vacume issue.....

 

I have the exact same problem on my 94 C220! If you manage to solve this problem mate share the wealth bcoz its annoying me

Ryan

 

I don't think this is related and it probably isn't a problem, but it's sorta weird, I think.

The air was very cool here today. My climate control was on auto. There was ice cold air coming from the center dash vents and very warm air coming from the outer dash vents. That's weird, isn't it?

 

the problem varies from duo/mono valve to flaps.

Lugnut, did you know that you can individually test the flaps on your A/C by just using the pushbutton control unit?

this applies to all who got Automatic AC (got automatic function on it).

i will post it next week.

the warm air shoild only flow from the upper dash, and not from the center vent. this i don't know the reason why. i ask my trainor before and he said the driver tends to get sleepy with warm air coming to the center vent??? kinda strange to me.

 

I know nothing. Nothing.