1989 MM with a 2.0l carb'd engine. 130k 1 owner miles. truck starts right up,runs great has plenty of power...except about once every 3 weeks I will get high idle when I start and drive. after about 2 days,it goes back to normal.
it will pull itself about 40mph on the hiway with no gas applied when it decides it is haunted.
any ideas to look for will be appreciated.thanks