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Here is what you need to do. Discharge freon from the A/C system and remove heater hoses. To aid in the removal of the heater box unbolt and remove the passenger seat. If console equipped remove that next. Remove Pass. side scuff plate and right kick panel. Then pull back your carpet about to...

W/ Murry be patient. the weather has been cold and now wet. Maybe ask for an update on the status of your part.

If you still in need of parts for your duct work, try @Murry B Park in Tiffen Ohio. Family run operation, he may have what you need. @cbody.com is the on line sight.

@furous70 is right about rebuilding your heater box. If you can control the air flow, the blower mtr can only produce so much air. I have rebuilt many heater boxes for 69-73 C body cars and properly adjusted they can supply more than enough air. As a caution, measure the amperage draw of the...

I have rebuilt many heater boxes and replaced evaporators and heater cores. If you have any questions feel free to PM me.

As far as I know there IS NO DROP IN REFRIGERENT. In my getting my certifications years ago I was told under no circumstances to mix 134A and R12. The properties of each refrigerant are quite different as 134a is more volatile than R12. Simply don't do it. AS for being flammable check the...

I agree w/ @Snotty, @FURYGT,@Davea Lux. My personal preference is to re-core. Inherent problems w/ the aluminum radiators is they can"t be serviced (re-corded). A short term fix. Aluminum radiators in long term service have problems w/ electrolysis which renders it a through away radiator.

The 69-70 300 models were equipped with a time delay switch (as @Big John suggested) located behind the glove box next to the fresh air recirculating door actuator. If found unplugged or vac line(s) missing can cause no A/C actuator operation. Also degraded foam seals in the heater box will...

With my experience on interchanging heater box parts your research tells me that the assembly # 3441554 or an exact matching part can be used to repair any full size PDCY (Plymouth Dodge Chrysler Imperial) Manual heater box. Without seeing an Imperial application Ican't confirm if the evaporator...

The second heater box is definitely from a 69-70 300 or New Yorker. Note the center dash duct work is a pure give away. The center dash discharge was continued through 72 w/ slight variations on the ductwork. Reusing your cars specific duct work would allow you to use the basic three pic heater...

Here is what I have discovered about evap. and heater core applications and fitment. For Chrysler and Plymouth the evaporator and heater cores are the same through 1972. The differences in the system functions of the temperature control is the use of vacuum control heater valve 1969-1971 and the...

Send me photos and I can tell you which ones fit 69-72 Chrysler and Plymouth.

My experience w/ AC Global wasn't at all very good. I did a heater box rebuild w/ parts from DMT and AC Global. The evaporator fitment wasn't even close. The car in question belongs to @ayilar's 1972 Chrysler New Yorker. If you have followed the thread @ Meet buttercup, a 1972 New Yorker...

If it is letting a small amount of coolant though that means the sealing edges of the valve are eroding away. Can you still drive it, yes . Is it time for replacement. If one is now available, do it now.

I was away from home on my first post here is an actual box picture with part number for you to reference to

From personal experience Murray Blower Motors are very close toan exact fit w/ good performance. You will have to transfer you pig tails on to the Murray replacement motor, otherwise a good fit. I have one in my 69 300 vert since 1917 w/ no problems.

Well besides sharing in my awarded Carlisle I suppose you're looking for a product endorsement too

I am in need of a comprehensive wiring diagram for manual A/C heater and blower controls. The diagram available through @ mymopar.com is of block style only. Currently this A/C system is missing vital power to the dash controls. I need info on the location of supporting relays or fuseable links...

m Extra care needs to be exercised in attaching nuts removal. Use lots of good penetrating oil, If they still won't move carefully cut the nuts off w/ a Dremel or the equivalent tool. If you don't breaking the heater box will happen. See photos. The stud brackets are riveted in, a seized nut...

Another more likely place of entry is through windshield cowl area. The plastic cowl cover easily warps or damage mesh area allows rodent entry. Access to the blower mtr. can be done w/ removal of the rt. front wheelhouse.