I've got an interesting one:
My 318is has very limited heat right now. My temp control knob will turn to the cold side no problem, but I can feel resistance when I get to the hot side.
From reading, it sounds like that temp control knob is connected to a "blend door/flap" that controls air flow between the two sides.
I do feel warm-ish air that comes out of the foot vent only. None makes it to the upper vents. Perhaps the windscreen vent, I haven't checked. I can do more testing if it helps the diagnosis.
I did the R134a AC swap (including removing the evaporator coil completely), but I think that's the only work that's been done in the region. Well, I also bypassed the relay under the driver's side dash, but that was fairly non-invasive.
Could I have knackered something when I was down in the area? Can anyone point me to this 'blending flap' so that I can check for blockages or something that would cause it to not open completely?
I've read about the solenoid valve that controls coolant flow. That is always suspect, but I doubt it's the issue since I can feel warm air in the foot well.
I'm just now getting to Fall weather in good old SC, so I've got a few weeks to get it figured out.
My descriptions are a little old because it's been four or five months since I actually tried to get hot air from the car.
My 318is has very limited heat right now. My temp control knob will turn to the cold side no problem, but I can feel resistance when I get to the hot side.
From reading, it sounds like that temp control knob is connected to a "blend door/flap" that controls air flow between the two sides.
I do feel warm-ish air that comes out of the foot vent only. None makes it to the upper vents. Perhaps the windscreen vent, I haven't checked. I can do more testing if it helps the diagnosis.
I did the R134a AC swap (including removing the evaporator coil completely), but I think that's the only work that's been done in the region. Well, I also bypassed the relay under the driver's side dash, but that was fairly non-invasive.
Could I have knackered something when I was down in the area? Can anyone point me to this 'blending flap' so that I can check for blockages or something that would cause it to not open completely?
I've read about the solenoid valve that controls coolant flow. That is always suspect, but I doubt it's the issue since I can feel warm air in the foot well.
I'm just now getting to Fall weather in good old SC, so I've got a few weeks to get it figured out.
My descriptions are a little old because it's been four or five months since I actually tried to get hot air from the car.
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