Hot air from S70 A/C

Was this at startup or after running for some time? If the latter, then it is probably icing of the coils. If you turn the A/C off for 5-10 minutes with the air blowing, the coils will defrost amd the A/C should run again. Set the cabin air on recycle when the A/C is on.

When the compressor started, was there any cooling?

There is a pressure switch that reports the refrigerant pressure in the high side to the fuel injection ECU. Assuming the pressure is not too high, the coolant temperature is not too high (or unknown as would happen if your thermostat is defective), and that you actually want the A/C on, then the A/C will be switched on by the fuel injection ECU through the low pressure switch. If the refrigerant has leaked out, then the A/C will not come on because of this switch. The low pressure switch is located near the firewall on the passenger side. You can short the wires together connected to this switch to see if there is refrigerant present.

On 10/7/04 12:06 PM, in article 0bIHc.2775$hi.953@lakeread03, "bill" decided to come out from under the bed and slurred:

How hot was it outside?

I've had our S70 do that on 40 C + days.

Hammo

I have the same problem with my 2000 S70. Intermitantly the AC will start blowing warm air. It may go for several weeks between problems. The dealer has recharged the coolant and added dye. A few weeks later the problem surfaced again. The dealer confirmed there were no leaks and that the coolant level was fine. They replaced the pressure switch and on the way home from the dealer, it started blowing warm air again. I don't know where to go from here. I have already spent over $250 for repairs and still have the problem.

Note that the auto trans version has much reduced torque output compared to the manual trans version because the trans can't handle it. So the magazine performance numbers will almost always be from the manual version.