'75 Imperial A/C

[tpjbaron]

I recently picked up an old Chrysler Imperial and have been working on it so I can use it as my daily driver. The part which is giving me trouble right now is the AC. At the moment I can only direct airflow at the windshield or at my feet. I believe this has something to do with the vacuum lines and actuators, but I can't seem to find the right diagram for it. Does anyone know where I can find it?

Also I believe someone before me maybe converted it from an ATC to a non ATC system. The inside of the dash is a mess, there is a lot of excess elements and wiring. This, for example, is what I found attached to the top of the heater housing:

Can someone please explain to me what this is and what it used to do?

 

[Ripinator]

I recently picked up an old Chrysler Imperial and have been working on it so I can use it as my daily driver. The part which is giving me trouble right now is the AC. At the moment I can only direct airflow at the windshield or at my feet. I believe this has something to do with the vacuum lines and actuators, but I can't seem to find the right diagram for it. Does anyone know where I can find it?

Also I believe someone before me maybe converted it from an ATC to a non ATC system. The inside of the dash is a mess, there is a lot of excess elements and wiring. This, for example, is what I found attached to the top of the heater housing:View attachment 138235Can someone please explain to me what this is and what it used to do?

Wow. . . ATC II. . . You have my deepest sympathies. . . Oh Stanley! This man needs your help pronto. Oh. . . and welcome to FCBO.

 

[commando1]

Oh Stanley! This man needs your help pronto.

Oh gawd. Talk about a worst case scenario.
This is no joke and I am not being mean or derogatory but if heat and a/c are mandatory, I'd sell the car.
No situation is hopeless but you'd really, REALLY, have to know these systems.
This comment

Can someone please explain to me what this is and what it used to do?

indicates that this may be over his head.

 

[Ripinator]

Oh gawd. Talk about a worst case scenario.
This is no joke and I am not being mean or derogatory but if heat and a/c are mandatory, I'd sell the car.
No situation is hopeless but you'd really, REALLY, have to know these systems.
This comment

indicates that this may be over his head.

Its a shame that the A/C system in these ATC II cars are such a monstrosity. I wonder if it could all be ripped out and a new Vintage Air system installed using the original vents and ducts.

 

[traintech55]

Question for all the "Formal" experts out there, can the non A.T.C. II system from a Newport, or New Yorker be installed in a A.T.C. II car?

I know it would be a lot of work, but the parts are unobtainable to repair these now.

Has anyone done this before?

 

[tpjbaron]

Oh gawd. Talk about a worst case scenario.

Yeah I figured as much unfortunately..

I've been looking around and mine doesn't seem to have the typical ATC II controls though or does it?

This is no joke and I am not being mean or derogatory but if heat and a/c are mandatory, I'd sell the car.
No situation is hopeless but you'd really, REALLY, have to know these systems

Look, I'm not gonna lie, I'd like to have some form of A/C, but I wouldn't go as far as to calling it mandatory. However, these type of cars are kind of hard to come by where I live. So I would like to make an attempt to fixing it, but it wouldn't necessarily be a bad thing if I were to fail.
Having said that, is this fixable, or should I be looking for a replacement altogether?

 

[traintech55]

Yeah I figured as much unfortunately..

I've been looking around and mine doesn't seem to have the typical ATC II controls though or does it?View attachment 138240



Look, I'm not gonna lie, I'd like to have some form of A/C, but I wouldn't go as far as to calling it mandatory. However, these type of cars are kind of hard to come by where I live. So I would like to make an attempt to fixing it, but it wouldn't necessarily be a bad thing if I were to fail.
Having said that, is this fixable, or should I be looking for a replacement altogether?

Looks like a partial conversion was done already, but how much is correct is hard to say.

 

[commando1]

It appears that a manual a.c. dash control was put in to try and operate the ATC II system.
Seriously, if this was my car, I would pull the dash and remove everything.
Source a manual a.c. box from a wreck along with a new heater core and evaporator..
It's a job from hell.
Best of luck.

 

[commando1]

Question for all the "Formal" experts out there, can the non A.T.C. II system from a Newport, or New Yorker be installed in a A.T.C. II car?

I know it would be a lot of work, but the parts are unobtainable to repair these now.

Has anyone done this before?

Yes. In fact I have a complete A-Z manual a.c. system sitting on the shelf as my Ace Up My Sleeve in such a worst case scenario. EVERYTHING old has to come out and everything new has to go in, as far as under the dash is concerned.
Plus, I have an assortment of NOS ATC II parts that I keep locked in a safe surrounded by barbed wire.

Years ago one brave soul started an online post detailing his journey to turn the existing ATC II system to manual but part way in he gave up. Vacuum plumbing was the nightmare in this case.

 

[Big_John]

I can't seem to find the right diagram for it. Does anyone know where I can find it?

You can do a search on Ebay for a 1975 Chrysler service manual. The manual will have diagrams etc.

I suggest buying a CD rather than a book, but that's up to you. Example: 1975 DODGE CHRYSLER PLYMOUTH SHOP MANUAL ON CD FREE POSTAGE | eBay

 

[commando1]

Here is my 76 NYB dash all apart.

And here is Combat Bob's 78.

 

[saforwardlook]

Here is my 76 NYB dash all apart.

View attachment 138255

And here is Combat Bob's 78.

View attachment 138256

What a pile of plastic and electrical junk!

I don't understand why Chrysler still called that system ATC II when it apparently was nothing like the ATC II systems in my 1971 - 1973 models with it, which can be brought back to life thanks to Performance Analysis Company:

Performance Analysis | Climate Control | Diaphragms | Blower Motors | Pushbutton Panels | Vacuum Door Locks | Autotemp | Cruise Control | Engine Oil Analysis | Mercedes-Benz Parts | Mercedes-Benz Club of America | Oak Ridge | Car Care - ACC Version I | Performance Analysis Co.

I actually have a car with the Performance Analysis Company refurbished unit that works fine. And it has a housing made of metal rather than the original plastic "bakelite" one that cracked and leaked in about 2 years no matter what!

 

[commando1]

I don't understand why Chrysler still called that system ATC II when it apparently was nothing like the ATC II systems in my 1971 - 1973 models with it,

I call the 74+ units ATC II 2.0

 

[MarPar]

Here is my 76 NYB dash all apart.

View attachment 138255

And here is Combat Bob's 78.

View attachment 138256

 

[tpjbaron]

Yes. In fact I have a complete A-Z manual a.c. system sitting on the shelf as my Ace Up My Sleeve in such a worst case scenario. EVERYTHING old has to come out and everything new has to go in, as far as under the dash is concerned.
Plus, I have an assortment of NOS ATC II parts that I keep locked in a safe surrounded by barbed wire.

I take it the manual a/c system is pretty hard to come by? Let alone get it shipped to Europe?

Years ago one brave soul started an online post detailing his journey to turn the existing ATC II system to manual but part way in he gave up. Vacuum plumbing was the nightmare in this case.

Well this is encouraging..

 

[LeBaron1973]

Shipping is easily arranged once the vehicle or parts are located.

Seems to me you'd be best to get a competent Dutch air conditioning firm to strip out the original system and replace it with a modern one then all should be fine.

Good luck

 

[saforwardlook]

Shipping is easily arranged once the vehicle or parts are located.

Seems to me you'd be best to get a competent Dutch air conditioning firm to strip out the original system and replace it with a modern one then all should be fine.

Good luck

I don't see why swapping out a non auto temp system with an auto temp system should be all that hard. Just pull the dashes and evaporator assemblys from the respective cars and swap over what you need to and reinstall. My 1969 Imperial with Auto Temp I will be getting swapped out with a manual system more than likely, unless mine actually works (it only has 36K miles on it, but then even if it did work, how long would it before conking out for good?)

 

[tpjbaron]

Well the 1975 Chrysler service manual is underway, should be here in about a week or so. In the meantime I'll keep an eye out for those manual AC parts. I'll keep you posted.

 

[cantflip]

Well the 1975 Chrysler service manual is underway, should be here in about a week or so. In the meantime I'll keep an eye out for those manual AC parts. I'll keep you posted.

Sorry... I'm late to this party... as far as parts go, ebay gets a fair amount of overpriced unproven parts. I would advise against making any investment until you have your FSM.

With your system as butchered as it appears to be, the first thing to do is going to require you to start disassembly and then figure out what you have. My guess is the PO was trying to get the fan to blow from the manual switch... but how much else they have destroyed is going to be a big issue if making the ATC II work.

I think @commando1 is right, you might be settling on going without. Look into whatever is available for a complete replacement system, but I bet that isn't fun either.

 

[commando1]

I don't see why swapping out a non auto temp system with an auto temp system should be all that hard.

OK.

Just pull the dashes and evaporator assemblys

Stop right there....