Hvac control conversion.
Nordschleife Master
Joined: Oct 2006
Posts: 8,575
Likes: 5
From: Orange, Cal
78 and 79 had wacky vacuum operated door locks, but I think all models have vacuum controlled AC vents. Tubing I think is usually still good, some relay in the control board needs upgrading, some of the vacuum control pods can have diaphragms replaced, others need a new pod. MityVac pump and gauge are your friend for diagnosis.
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Joined: Jan 2003
Posts: 16,943
Likes: 1,046
From: Double Oak, TX
Me thinks it will not be easy as all the controls on the early cars are vacuum actuated direct from the head unit.
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Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
