Cruise Control not working

The cruise control on my 85 has stopped working. I have voltage at the
connection and I have vacuum. Also, the switch on the break pedal seems to
be OK. I have replaced the servo and still the thing is not working. Any
ideas? Can the speed sensor be the problem even if the speedometer is
working properly?

When you say the brake switch seems to be working, are you sure the cruise
swtich in the brake swtich is working. Just becuase the brake lights come
on does not mean the brake switch is ok. There are several switches in one
brake switch and lots of times one will burn out and the others still work.
Check the on/off and resume switches also. Make sure you have ground as
well as power. I am not sure without looking at a diagram what wires do
what, but remember ground is just as important as power.
"JH" > wrote in message
om...
> The cruise control on my 85 has stopped working. I have voltage at the
> connection and I have vacuum. Also, the switch on the break pedal seems
> to be OK. I have replaced the servo and still the thing is not working.
> Any ideas? Can the speed sensor be the problem even if the speedometer is
> working properly?
>