"You have to have something there, either the STV or the STV eliminator. With that said, the STV has to be in working order. I had to repair the the vacuum control valve and the diaphragm on mine over the years. If yours is original chances are that…"
"I'm using the stock STV (suction throttling valve). They are adjustable per the steps below from the 63 shop manual. I set the pressure to 28 PSI for R134a. I'm pretty sure the same STV is used in 64."
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This site is hosted by the CLC (Cadillac LaSalle Club) 1963/64 Cadillac Chapter. Joining the website is free to everyone, however, you must be a CLC member to join the Chapter. - Click…"
"I am now recalling an extensive thread on the comfort control system in the library here posted by —Clovis —who used the adjustable STV valve —so that was where I learned of the STV adjustable valve you have in your system which is…"
"I think there are two STV’s available and one is adjustable which you are indicating to help keep the evaporator from freezing
Very glad your system is working as well as it does ( I feel bad for the poor penguin ) —LOL…"
"Tony, Correction: I DO have the stock STV installed. The modification is to install a STV eliminator to convert the system to a clutch cycling system.
My AC is working well (gets colder than a penguin's pecker : ) These STVs are…"
Is your AC working well and getting cold enough as you do not have the STV valve installed with the 134a freon in your car
My system was changed over to 134a some time ago but the mechanic and myself did not know about the STV valve at…"
"you 100% should remove the evaporator from the case. You live in the north, it's gonna be full of leaves and it may have been a mouse's home address in the past. It would be silly to go through the trouble of…"
"The evaporator is inside the black case on the firewall. Take off the STV (top of evaporator) and the expansion valve (bottom of the evaporator) and run the flush through top to bottom then dry with lots of shop air. It is not necessary to…"
"Ok, i watchedca few utubes on flushing out the condesr and evaporator. Wat i cnt equate to my car, wherr do you put the air hose that you disperse the fluid. The one i watch was on a 71 chevy. Looks likeche put itvup to a big hose,…"
The STV valve is required for the system to maintain the correct internal pressures to get cold enough for the 134a freon as it cycles the compressor on and off to do that
During the off cycle of the compressor you are saving…"
"There are o-rings between the manifold & compressor too.
Flushing the evaporator is the same process as flushing the condenser. Oreilly's loans out a flush tool. You run the flush through part and then follow with lots of air to push out…"
No better advice than been there done that regarding repairs
Gotta love this website if you are lucky enough to own one of our super fine Classic Antique Cadillacs The boys here really have a passion for…"
I got the old compressor out, new one in. As i looked at connections, i noted nothing woukd fit, soi was wondering. Do i need to take the rear bracket off the old unit and attach to the new unit? …Continue
Gentlemen, I am in the process of changing water pump on my 1963 Series 62 Convertible, with a 390 engine, and I want to tidy the engine compartment up while I am at it. My car is a California Black…Continue
So I am troubleshooting my fuel gauge issue. I bought a new sender and tested it. It it goes from 1-ohm (empty) to 35-ohm (full). When I test it (outside the tank), when the float is in the up (full) position it only moves the gauge to about 1/2 full. When at the bottom (empty) position the gauge shows empty. This is the same issue I have when I fill and then use the gas in the tank - the gauge never reads ore than half full. Based on what I've read on this thread it would seem like the…