Climate control/ ac hot air - cold air

[beewee]

Hi Guys;

Had a similar problem with the other member, however I want cold air.
the passenger side is blowing cool air while the middle and the driver side blows normal to hot air, even if its already 16 deg settings?

any idea?


Beewee?

[Jack Dabsy]

Depending on the year of your car- The vents may have tiny temp sensors in each one, these send signals to the blower resistor (AKA Hedgehog Resistor), this resistor has a reputation of failing (and a little awkward to replace)... Just an idea ;-)

[beewee]

Hi Dabsy,


thanks for the replies, if its the resistor, both airvent should be hot isnt it? but there is cold air coming out of the passenger side.

even when i switch the ac of and run in the car from outside air i can still feel the hot air when its already cold outside.


thanks

[Jack Dabsy]

There is that much tech in BMW's, it's difficult to diagnose logically as there are allsorts of additional valves and sensors in the climate control...
Does your motor have a secondary heater valve attached to the bulkhead (usually opposite the brake servo)?

[Jack Dabsy]

There is that much tech in BMW's, it's difficult to diagnose logically as there are allsorts of additional valves and sensors in the climate control...
Does your motor have a secondary heater valve attached to the bulkhead (usually opposite the brake servo)?
Is it "Dual" climate control?

[beewee]

i think so, because i have 1 for me and 1 for passenger, can I just disconnect or rmove the heater?

[Jack Dabsy]

Nah, why would you want to do that? Would be easier to remove the windsheild/windscreen LOL.
Right, so it IS dual climate control... The blower resistor may be at fault (Common fault AKA Hedgehog)... What year is your ride?

[beewee]

1996 318i, automatic, Its hot here were in the desert, middle east.

[beewee]

CASE SOLVED!!!!!!!

Hi guys finaly found the cause of the heat, Its the central air vent.

I remember that even if no AC and just natural air it becomes hot, so i suspect there are some flaps that were not closed. truly therfe was.

In the middle vent, there is a control with red and blue mark. at the back of it is a cable connected down near the fan motor, just above the resistor. this flap is responsible for switching from hot to cold air. the connection was just detached from the knob at the vent.

here is the link that help me too BMW E36 Center Vent Removal

Thanks guys for staying with me.

[Jack Dabsy]

No worries Dude... Glad it's finally sorted ;-)