I bought this beauty a year ago and at that time the AC system was flat.  I replaced a line that had a huge hole in it, pulled a vacuum, charged it with R12 and it started making cold air !!!! Oh happy days !!!

AC runs great until I take the transmission out of Park (and put it into Drive or Reverse).  At that point it just fan shuts down.  If I put it back in Park the fan starts blowing cold air again. 

What the heck ?   My only thought is that it might have something to do with the neutral safety switch (it hisses when I put car in Drive). 

Any suggestions ??

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My above post should read -
I do second Kurt's suggestion

Sorry Kurt !

Enjoy

No problem Tony. I've been called much worse : )

Hi Guys,

Thanks for all your suggestions.  I have been troubleshooting the AC pneumatic system and all things point to the "rotary valve" on the passenger side interior.  I bought the $20 manual and it gives direction on how to recondition the rotary valve.  It doesn't sound too difficult.  Has anyone done this before and do you have any advice ?

Robert

I did disassemble my rotory valve on the servo behind the glove box but it was some time ago
I just put it back together the way it came apart with no issue as i recall
The rotory valve on the back of the confort control controls was a bit more difficult to work with but do not recall the details

The point i want to make is i did find debri in that rotory valve and the rotory valve behind the confort control controls so cleaning the valves was rewarding and a good idea to have the AC work correctly

Do what you must to be sure all your hoses are holding a vacuum ( no air leak )
Plug what you must to have the system hold as much of a vacuum as you can and then you can get back to resloving the leaking hose or leaking vacuum valve for example
You will be establishing the parts of the CC that you will need to be replacing in the future at this same time

Enjoy

Thanks .  Just got done refinishing the valve.  No big deal.  Not very intimidating (once you've done it).  Thank for the advice.

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