Cruise Control

[sdhd97]

My 87 has developed a cruise control surge, when engaged it will hold but surge up and down like it's struggling to hold the speed. Can you pointe me in the rite direction to fix this problem.

[bradfordsvettes]

did this just start or is it since some work was done ? could be as simple as a vacum leak or misadjustment need a little more info has it been getting worse Steve

[sdhd97]

It just started, I just had the igntion module replaced and my MSD 6al box replaced as well since it got wet.

[aquaholic]

is it possible that a vacuum line didn't get reconnected when this recent work was done? take a long careful look under that hood to see if there is an unconnected vacuum line laying somewhere. it happens to all of us. i had one come off the last time i went to the dragstrip on the 74. pulled the air cleaner when i got there and looked around (in my defense it was getting pretty dark). car ran like crap and i lost 2 out of 3 to my uncle and his crustang. next morning i took another look (in broad daylight) and there it was. a 3/8 vacuum line popped of the vacumm tree on the rear of the intake and was laying there staring at me like a dog staring at a steak. cant believe i missed that even in the dark.