Heres the deal with the 84 300D Turbo w/109,000 miles.
When driving, all of a sudden, the AC will blow out hot air, and then after a few minutes it will blow cold air again.
The blower works, and since the air coming out is pretty cold and works most of the time, I would think it has freon in it.
Any thoughts? maybe the compressor is going out? I would like to keep R12 in the system as long as possible (I like it because its cools better than R134a). Thanks.