When i set my cruise at say 70mph after just a minute or two the speed will drop to about 65 and continue dropping indefinately until i disable it. The cruise control just wont hold its speed. About a month ago i changed the vehicle speed sensor (for abs light) and it didnt help. what else would cause this problem?

 

vac leak

 

yea, i checked for that before i posted. not saying its not possible but could you be a little more specific?

 

There will be vacuum lines from your throttle body. Make sure they are all secured.

 

they are secure...but id change em, even a pin hole will cause ur problem