1996 Dodge Caravan, 170,000mi 3L

Hi,

I have the van mentioned above and it's having a problem with the A/C. Sometimes it cools just fine. Other times it blows hot air. It may do both in the same trip. Turning it on/off may or may not help. On occasion the belt will squeal, other times not. Sometimes when I turn the unit on I hear what sounds like fluid flowing, sort of a hissing sound, which lasts for a few seconds.

The van has an odd electrical fault that seems unconnected to this. At times the windshield wipers will start up on their own, wipe once or three times and then stop. It's most likely to happen when it's cold and humid. No other odd things happen.

I'm disabled, REALLY need these wheels and it's actually a very nice running vehicle. Except for the AC and wipers. Thanks for any help you can give.