what is the vacuum canister for that is behind the drivers front fender?

After removing my fender I see its got a hole in the top but nothing is hooked to it and no line is laying there.

Any help would be great. I finally bought my dream car and starting the process of collecting parts and information.


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Power door locks. 

where does the hose run from to it? its just the can sitting there.

The input vacuum goes over to the intake vacuum nipple and the out put goes thru the firewall to provide vacuum for vacuum power door locks and/or vacuum power trunk. See below.

... and/or power deck lid.

What that cooler bolted to his fender in this picture.

I have this in a box it was removed from the car. Maybe I should have this hooked up?

It is a power steering pump fluid cooler used on 1964 Cadillacs with AC.  See below for details.

Power steering fluid cooler.

You should have the power steering steering cooler hooked up in a our year  stock Cadillacs 

Always a good idea to be keeping fluids cool to protect our steering system 

It gets HOT under that Hood 

No idea why someone would remove the cooler and not replace it 


Yeah I still have it. Someone cut the lines and just ran the powersteering lines right back to the gear box.

How do I hook it back in? Is there diagram in the service manual on how it should look?


I know the 64 has the steering cooler on AC  cars but not sure about a 63 


Mines 64 and didn't have A/C.

So if I didn't have ac from the factory I wouldn't of had one of these coolers? It was in a box of parts that cam with the car when I bought it.

Just noticed I have no vacuum cannisters on this car as well. But thats for another discussion. Somebody really went to town under this car. 

- 1964 Cadillacs with power vacuum door locks or power vacuum trunk/deck lid have a large vacuum tank under the left driver side fender. I
- 1964 Cadillacs with AC have a smaller vacuum canister in the center of the firewall for the comfort control system. A non-AC care would not have this vacuum canister.
- So, a 1964 Cadillac without AC and without power vacuum door locks or power trunk/deck lid will not have any vacuum canister.



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