In a message dated 98-06-02 19:30:09 EDT, don@TINAJA.COM writes:

<< The AC on my 87 Synchro stops completely six minutes into cooling normally,
like as if the
 high pressure switch was trying to tell me something.

 After a ten minute shutdown wait, you can repeat the above as often as you
like.

 Seems to drop out faster at hiway rpms rather than local traffic. Seems to
get "supercold"
 just before dropout.

 Could this be the receiver/dryer full of grunge?
 Can this part be cleaned or must it be replaced?
 Are there rebuild kits?
 Will the dryer from a Sicorro or a Rabbit or a Golf or a Jetta or whatever
work?

 Any suggestions? >>

 As I mentioned in my post about a week ago (see: A/C no place for DIY) there
is tremendous value in having a fantastic A/C mechanic. You may want to have a
mechanic check for a blocked expansion valve, and a blocked
receiver/filter/dryer. Sounds like you high temp/high pressure over switch is
cutting out to save your system. Have it checked ASAP.

gmbulley
cary, nc