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1979 Mercedes Benz 300D cruise control

698 views 1 reply 2 participants last post by  GTO71  
#1 ·
New to the forum here....been having issues and need some ideas on the cc. The car sets and maintains speed for awhile. Than is slowly falls down. When i mess with cable on the cruise control it helps for a bit than goes back to its old ways. Any ideas ?? Also it seems like it Revs for quite sometime in 2nd gear before going into 3rd and once it shifts you can feel the whole car rock. Thank you for any advice in advance.
 
#2 ·
First guess would be the cruise control amplifier under the drivers side of the dash.