The Classic Cadillac Forum Discussion, 1971 cadillac cruise control in Past Cadillac Vehicle Discussion; Hello everyone,
A question for you all. My 1971 DeVille has cruise control that isn't functioning. When I turn on ...
A question for you all. My 1971 DeVille has cruise control that isn't functioning. When I turn on the cruise switch, it does light up "on" in green, however, when I push the button to engage it on the turn signals nothing happens. Anyone have any ideas what the issue may be given this info?
Allow me to add- I doubled checked that my tubes hold vacuum pressure and they do. I think the issue is that the wire connected saying "engage" is only attached by a thread. Could that be the issue even though it is still attached, although only by one wire? I feel it is but had one person tell me it wouldn't be. I just want another opinion.
The coil spring inside the cruise control unit is probably broken. It is a mechanical cruise control that works with springs, vacuum and contacts. I have the same thing. I tried to replace the coil spring a long time ago, but had no success. I will check out a remanufactured one from cardone. They offer them through ebay as well.
I just haven't found the real need for it to spend the money...