Volvo RWD 900 Forum

I have both the wiring (sec 3 39)and climate (sec 8 87) manuals and after replacing the evaporator, accum, PAG oil to order and a good pumpdown recharging to the exact ounce I have great cooling of the accum and suction line but evidently not enough airflow to transfer much heat to the R134a. At that rate I'm going to slug the compressor with liquid and blow it up while still being hot. Condenser fan blows like a happy panda. Total cooling is only about 10- 15 degrees and the recirc flap is stationary/nonfunctional drawing outside air only. I can push the closed flap up through the fan intake.
Vac lines (3) were reconnected outside and also the one to the multiball tank was not forgotten. Heater valve functions. The thermistor in the blower housing ohms to spec (10-ish). My initial thought was I was getting uncontrolled hot air. I am not sure the electric flap motor is working. either. How do you acccess that item? Thru the radio hole?

I have an unconnected yellow female connector in the glove box area. It may be A11 or probably A10 but exactly where would it plug in? Diagrom unhelpful. I must have missed something???? I cannot find an obvious makeup point, even though I may have unmade it. Or is it for something not in the car?

A second complication is that the distance between the pass dash vent and the airbox in the center somehow got about 3/4" "longer", I had to graft in a tubular spacer, what the heck moveed when I pulled the duct out? Nothing obvious. Very odd. Could I have jammed the flap motor?

These sound like simple problems but are driving me crazy. The car cooled fine with the evap leak, with some R 134 added, even though the coil was about 1/3 blocked with leaves and junk. The leak was big enough to send a large stream of bubbles up in a bucket or water when pressurized with shop air.

I must have bungled something but what/how? I'm convinced the refrig system per se is fine.

This is the first AC problem that has ever stumped me, please, someone light a lightbulb over my head. I'm getting tired and hot.