Air Conditioning problem
1996 Volvo 960 6 cyl Two Wheel Drive Automatic 128000 miles
When I start my car sometimes my air blows cold and will continue to blow cold throughout a trip. This may happen for a couple of start-ups and trips in a row; then, I will start up the car and the air blows the outside temperature and will continue to do so for a couple of trips.
I am not sure if this is related or not (it doesn't seem like it would be) but my brakes are also hissing when I press them and it seems like I am loosing my power brakes.
I feel that they may be related, I would like to see you go get the vacuum system checked, the hiss may well be a vacuum leak, this will affect the operation of the power booster and also any vacuum controlled heater & A/C vent control systems, start here.