Dusty, I do not understand the comment "I have a hole in diagram in servo"??? I will just say that the shop manual and Cadillac Tim Groves 64 Comfort Control Diagnostics Manual are the two items you need to go through and diagnose the system. Almost all illustrations from the shop manual can be accessed from our Help page under AC/Heat. If you look through those illustrations you will have what I have and what is in the shop manual but not all the text and diagnostics, nor all the great info in Tim Grove's book. If serious about getting your system right, have both manuals handy.
Jason I pulled the arm off my power servo and pushed blend door open and got full heat in car put arm back on turn selector on but servo would not open far enough to open door not enough vacoum I took vacoum line off of my transducer and put it on my servo went to full heat could I have a hole in diagram in servo thank you for you're time
Hey Jason, Thank you for the help and info! I'm going to see what I can do about swapping the motors for a little while, while I rebuild my 429
And finish up 63's engine bay and firewall. I guess I'm still doing everything ass backwards :)
Frank, if your 1964 is a Coupe DeVille (body style 6357, VIN 64J......), in addition to the items Russ mentioned (shift quadrant display, front driveshaft, gear shift linkage, etc) you will have different cross-member yaw mounts, neutral safety switch, and you need to make sure the 390 engine/trans setup includes the TV Rod, starter, trans inspection covers, rear trans mount, etc, as all of that is different between the Hydrmatic and Turbo Hydramatic Transmissions.
Is the heater hose "hot" on the heater core side of the water control valve? If it is, it is letting hot water to the heater core and will need to diagnose further. If not, you have issue at the water control valve. In heat mode you should have no vacuum at the water control valve diaphragm nipple leaving the valve open so hot water can flow through. In AC mode, Vacuum forces the diaphragm to close the valve. From there I would check the diagnostics in the shop manual and Tim Groves Comfort Control Diagnostics manual.
I know I'm not the only one who has dealt with constantly failing exhaust manifold gaskets but I have the heads off for a valve job and I'm trying to fix the issue once and for all. Well, maybe for a…Continue
This is off topic as my daughter is NOT driving my '64 Cad in LA, but a yeoman old Saturn (recent impoverished college grad). I am 2000 miles away and unable to review and service the car. Can…Continue