View Full Version : Another A/C problem [pic attched]

08-03-2007, 01:44 PM
this pic isn't from my car I just got it from google. Just for explanation use.

Finally found out why my car is fcuking hot even A/C is working fine..

Actually my A/C didn't working fine. Yesterday I checked all 3 vents. Normally I put my A/C as "auto" and it seems cold air is coming out from the vent 2 only. Now... when I put "auto" then vent 1 ventilate hot air and vent 2 ventilate cold air. Now they mix together and it doesn't feel cold at all.

ok here is the real problem.

You can choose the dirction of air flow right? vent1, vent2 and vent3 or all together.

Now if I put as vent 2 then air is mixed (hot + cold)

If I put as vent 1 or vent 3 air is damn hot.

If I put as "auto" then vent 1 and 2 are working but vent 2 produce cold air and vent 1 produce hot air so eventually inside the car gets warm.

I heard many stories about driver's side and passenger's side are blowing diff temp but I never heard about this.

also what temp do you set your A/C ?

I put 18 C (64.4 F) and air feels cool enough.. but when I change to 19 - 21 then I feel air is damn warm...

Water pump? Flap motor? acutalator? water valve?

08-03-2007, 01:54 PM
Sounds like your heater core is still getting hot coolant circulating thru it hence giving out the hot air.

I am not sure what would cause it on an e46, but it could be somehting like a heater control value, or watever is used to stop the flow coolant when the colder temps are selected.

08-03-2007, 09:33 PM
Change the thermostat!

08-04-2007, 01:17 AM
Change the thermostat!

you mean A/C Climate Control due to Malfunction??

will this solve warm air problem too?