Date registered: Jul 2015
Vehicle: 1978 450SL
Location: Madisonville, TN, USA
Mentioned: 2 Post(s)
Quoted: 97 Post(s)
'78 450sl cruise control question
Of course, the cruise control doesn't work. That's not a problem. But here's the question:
There is a black w/ yellow(possibly grey) stripe vacuum line going to the cruise control from one of the main junctions of the vacuum line coming off the back of the intake manifold. Connections look good. Line not brittle or broken. However, there is a larger, solid black 'line' also going to the cruise control. It ends at the cruise control with a screw type fitting. The other end of this larger black line goes through the firewall and while looking for some other stuff, we discovered that the line is cut. It just hangs under the dash, attached to nothing. Me thinks that is probably not right. I couldn't find any cruise control info on the 107 manual that's on line--hope someone can give me a link so I can see how the cruise control works, what vacuum lines go to it from where, etc. Thanks.