Hey All,

Seems the cruise controls are always breaking. I have an '84 300SD.

Cruise Control sometimes works, sometimes does not. Also it only is smooth going up a hill or on an even incline. The car will "pulse" when the cruise is working, and when I am going downhill.

I have seen how to replace the amplifier, but not sure if my problem is a bad amp or an actuator?

Any suggestions?

Thanks in advance