TIMSPEED

The cruise control doesn't work on the 87 I'm about to buy, any ideas on what to check to see if maybe I can fix it? Thanks in advance

CaneinBatonRouge

Could be the Cruise control servo(about $220) located above the battery resembles a ufo, or could be a vacuum problem. Check and see if you have the big black vacuum ball in the driver's side front by the headlights and that the vacuum line from the servo is connected. :seeya :flag

scorp508

Auto or stick?

KYVette90

Unplug the connector on the servo and clean it a little and then plug it back in. This is how I fixed mine.

TIMSPEED

Never knew they had Cruise Control on a stick...
yeah, that's what I figured, just clean the connectors.

LTDan73

Also if a taillight is out thecruise control is deactivated as some sort of safety feature so I hear.

Marcho Polo

on my '85 there was a vacuum hose that runs to the brake pedal switch that had rotted out. It runs under the master cylinder through the firewall. I replaced it with some fresh vacuum hose and it worked again.

scorp508

Yup, if you barely touch the clutch or brake, it turns off.

A

Mine does: 1987 4+3 coupe.

scorp508

Me too. It wasn't really an option if I remember right, you just plain GOT IT.

A

Hey scorp, does your cruise seem to pulse? Say I set it to 70 mph it'll back off to 69 and add some gas and go at 70 for a while then back off to 69 yada yada.. :confused:

Marcho Polo

My '85 did that.... but the return spring on my BBK throttle body was pretty stiff compared to stock and I just figured the cruise had trouble holding it steady.... but it was so annoying sometimes that I just didn't use it.