Entering the 9 circles of hell... trying to resurrect my ATC... update IT LIVES!
- Thread starter MOVE N UP
- Start date
Wow. Look like somebody h hadle on ATC.
LeBaron1973
Old Man with a Hat
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Sounds like a business opportunity ATC 11 repair.
Excellent photos and descriptors MOVE N UP! Thank you very much - you aren't missing any details! Hope it all works well with the a/c system itself actually functioning well. Keep us posted. Maybe there is hope afterall. I might even have some NOS switches for an ATC I system if you need some.
polara71
Old Man with a Hat
Baaaaaa, put the windows down
live4theking
Old Man with a Hat
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As I looked at the pictures of all those 50 year old plastic check valves and switches all I could think was brittle plastic be careful.
The Captain
Active Member
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Was there a doobie under the dash?
MarPar
Meat Man with a Hat
UPDATE!!
I received my NOS master switch today and replaced it. I am happy to report that it works as it should! My selector switch however had a hiss, and the push buttons were a bit stiff in operation- so I swapped that out ( a little bit tricky)with an NOS switch that I had previously purchased....
I am extremely pleased to report that every function of this system now works 100% properly!!!! All doors move, and fanspeed is controlled to coordinate with temp selection. I spent around 30-45 mins putting the system through the paces. I must admit it is a bit strange to not have it have an immediate response to a setting ( with the exception of hot defrost) but as I understand it, the temp sensors need a certain amount of time to determine the inside conditions of the cabin, and those signals are sent to the control box to turn electric values into vacuum commands. But, as I said- when I want cool air I get a transition to cool air out of (mostly) the AC vents -I want hot air it splits between floor and vents -defrost it kicks *** on defrost!
I will consider myself lucky as I only had to replace two parts
Selector switch at $90
Master/clutch switch $60
Vacuum hose $30
And I repaired my vacuum reservoir with Right Stuff
+ many hours of research as well as hours underhood and dash. I consider the whole experience worthwhile!
I received my NOS master switch today and replaced it. I am happy to report that it works as it should! My selector switch however had a hiss, and the push buttons were a bit stiff in operation- so I swapped that out ( a little bit tricky)with an NOS switch that I had previously purchased....
I am extremely pleased to report that every function of this system now works 100% properly!!!! All doors move, and fanspeed is controlled to coordinate with temp selection. I spent around 30-45 mins putting the system through the paces. I must admit it is a bit strange to not have it have an immediate response to a setting ( with the exception of hot defrost) but as I understand it, the temp sensors need a certain amount of time to determine the inside conditions of the cabin, and those signals are sent to the control box to turn electric values into vacuum commands. But, as I said- when I want cool air I get a transition to cool air out of (mostly) the AC vents -I want hot air it splits between floor and vents -defrost it kicks *** on defrost!
I will consider myself lucky as I only had to replace two parts
Selector switch at $90
Master/clutch switch $60
Vacuum hose $30
And I repaired my vacuum reservoir with Right Stuff
+ many hours of research as well as hours underhood and dash. I consider the whole experience worthwhile!
300rag
It's Not Going to Shift Itself
Very nice to hear of your success. Given that the controllers in the kick panel seem to be the big hurdles in these systems, maybe with 62K miles on your car, that controller was already replaced once, so maybe you got a pretty fresh one. Great work!
mrfury68
Senior Member
Good job by you! Very descriptive in your text & pics describing how you diagnosed & then repaired your ATC I system back to functionality. I'm impressed !
brougham brummel
Well-Known Member
Jesus Christ.Look at all those switches! heh.B.B
3175375
Senior Member
Way to go! The control systems in these cars were a vacuum disaster, ripe for failure, due to out-gassing.
excellent job!
excellent job!
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