I cannot find the heater hose connection to my 67 Eldorado with a 429 engine. The hose by the oil filler is blocked off but I cannot find the other location. Sounds ridiculous but I have had several people look at it. I am not familiar with this car so I could use the help of anyone who has a 429. The previous owner disconnected it because it sent too much heat inside. I would like to correct the problem but I need to start with the heater hose connection. Thanks

 

Did he leave the hot water valve in place??

 

Thanks for responding. I just found out from a gentleman that the hose that is not connected is supposed to be connected to the right side of the radiator. I checked a parts supplier & they make both. I believe what happened is the previous owner ordered the wrong radiator & installed it & just cut the hoses. I am going to talk to a radiator shop & see if they can install a heater hose connection.

 

Cool, good luck with that, I'm sure they will fix it up for you.......

 

now too much heat & no cooling

by LtDan on Tue Oct 04, 2011 10:47 pm
I clipped off a small amount of each hose because some were loose so I did them all. That got the blower going. I could not get heat though so I removed the leaky water valve( which will be replaced) & put a pipe between hoses but still nothing. I then checked the power servo & there was no suction so I took a hose from the headlights & I got heat!!! I followed the servo line to the transducer & then to the vacuum storage tank & found it disconnected. I hooked it up & it worked but I can't get cool now even turning the thermostat all the way down.

I have 1 outlet on the master vacuum switch blocked off & I have to find out where that goes. Good news is the heater core is good & I have heat for the fall but I still want to get it right. I also have to decide to keep the R12 refrigerant or change to R134a.

The power servo diagram states high vac gives max heating & low vac gives max cooling. I tried to pull the hose off slightly to give less vacuum to turn on the AC but no luck.
The diagram also states low voltage gives high vac output & high voltage gives low vac output. I also checked the voltage at the transducer & found 10.95 volts when set for heat & found 11.05 volts when set for cool. It is 12.90 volts when switched to off. Voltage of .10 does not seem like enough to change from hot to cool.

I am making progress & any help is appreciated.