GERALD´S CADILLACS


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The 67 Eldorado´s vacuum hoses - Blower issue

The 1967 Eldorado is now back home from the restoration shop. They wanted to recharge the AC on the day before I wanted to pick it up only to find out that the condenser is also leaking badly. I´ve ordered a new on from Cold Air Products in USA in the meantime which I will install later. The recharge will then take place in spring.

During the rebuild of the whole AC system I found out that I´m also having a little issue with the blower which does not always come on at full heat. So as a first step I started to go through the numerous vacuum hoses in the car yesterday. I soon found some old and brittle ones which fell apart when I just touched them. The two hoses that fell apart were the ones going to the right headlight doors.
Original color coded hoses seem no longer available anywhere. Thats why I had to buy regular black ones and paint the red and green stripes on them. Looks almost perfect - I did not think that it would turn out this nice.
Will go through the rest of the hoses soon. With the replaced hoses the headlight doors now work 100% simultaneously, whereas before one was slower.
I still have to find the issue with the blower motor - but I now suspect either the AC controller or the power servo. It works perfectly in full cold - only when I set a higher temperature the blower will cut out. Another problem to solve over the winter... I had almost the same problem with the 67 DeVille before which I could successfully repair.
BTW - if you know of any source for the GM OEM style color coded vacuum hoses please let me know.
You can find a vacuum diagram for the headlight doors here!

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There are lots and lots of vacuum hoses in the Eldorado to check - here are only a few going to the storage tanks...
I will also give them a good cleaning during the winter.

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The new hose with the painted red stripe is already in place - looks some kind of original...

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