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E39 Air conditioning not blowing cold

62797 Views 29 Replies 12 Participants Last post by  reza.fariza
I believe I have have a self-inflicted Air Conditioning issue.

I noticed my air conditioner was only blowing warm air today when taking a ride for lunch. I set the temp on both passenger and drivers side to 60 degrees and only warm air with the fan on full blast. Usually it's very cold only on the first three or four lowest fan setting. The center vent dial is set to three blue dots. The light on my A/C button is lit green (on). I did have the system set to 90 degrees earlier as I was bleeding/burping the cooling system from a cooling system maintenance.

I suspect it is self inflicted as I just finished up the install for a electric fan and was in the relay box under the passenger carbon filter airbox last night. I was installing a pair of fan relays and wiring into the relay box for a SPAL two speed fan.

I swear I didn't screw something up in there, but I'm getting older and senile, so just maybe I jostled something or bumped a relay that has now failed.

I'll open it up when I get home to see if there is anything obvious, but am posting here to see if anyone else has had a similar experience. I searched for "Air Conditioning problem" and among all the feedback, I'm thinking I either disconnected or josteled a relay so it's now broke. I'll also check the fuse when I get back to the car.

Ah, I also checked the A/C compressor belt, it's on and spinning normally.

Will the OBD throw a code for an air conditioning failure?

Thanks in advance for any insight!
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when the air blows, check to see if a gas smell appears. If it does it might be the evaporator. Usually the right side starts not cooling.
told ya it was the evaporator, lol. congrats

Update: Using the feedback that a sensor or connector might have been loose, I looked for all connectors I may have come accross and found one I thought I had secured at the A/C Evaparator that I had disconnected trying to figure out how to get underneath to the Emissions Air pump. Anyway, I secured that connection and now I have icy A/C again. Nice to have it back even though I wont use it again for 5 months... Thanks all for the leads they helped my narrow down the problem..
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