"The 64 --comfort control system --has a valve in the heater hoses ( three vacuum hoses go to it ) going to the heater core that opens and closes to bring heat ( hot water ) to the heater core and into the cabin ,as is required to reach a fixed…"
"I blew air through the heater core there was some back pressure but I didn't want to blow antifreeze all over. I think, but not sure, the heater shut off valve is a normally closed one. I did see a picture of a water pump in the shop manual…"
"Could your heater core be clogged ?
Preventing fluid flow ?
It could be by passed easy enough
Not sure what effect a bored out engine , rebuild might have on the temp the carb will run at
We been thru all the basics it would appear"
"Brian, Hard to say 3K miles from the car. You will need to take a light and do a close inspection of your hoses, cooler, clamps, etc. If you have a good cap and stick you should use the one you have as mine will be $20 for the cap and stick as they…"
"All right I'm standing in front of this engine and have blown air through all water passages and rad. No white stuff is coming out only antifreeze. It froths a bit and looks white when being blown out but nothing is wrong here that is obvious.…"
First off thanks to all for this great site. I've already learned quite a bit on my 64 sdv for my own repairs. I've got a problem with my engine overheating. It started suddenly and it has a new…Continue
To start i want to say nothing wrong with customs. But, along with Tony and Ginny 429 many words of wisdom it is enough to maintain in original condition. Cadillac built the car to run like Chuck Berrys Maybelline, my orig. carb . gets me 13 mpg. on the road ,70-75 mph.and if i feel the need to pass rice Irocket,no problem! I am glad others kept my car orig for me to enjoy now! the next generations will enjoy. I had a carter restored at Benchwick carbs. inc. ohio 330-782-3767, not only did…
The motor in my 64 DeVille was rebuilt prior to me owning the car. Some jack wagon cut the end off of the green temperature sending wire, and never installed the temp sending unit back in the head...they just plugged it. I am hoping some one might have a pic of the correct wire routing and the connection end on the the temp sending wire.
The -Search Engine - is located on the very top right of the home page and has years of questions and info filed there , on many aspects of repairing and researching our year cars
Many answers are there just for asking the question , that applies to what you are trying to accomplish
Should help -Getter Done !
A heads up that might be mostly for New owners of our year Cadillacs
The ignition key SB in the north. ,south position when the engine is turned off , on our year cars
To the far left position is accessories
If left in the accessories position ,a chance you may drain the battery ,especially over a longer period of time
I see a good many keys in the wrong position , in interior photos
Unlike the cars we drive today , that the engine off position , is to the far… Continue