I had been driving my Tahoe (135k) for about a solid hour and a half at
65-70mph, came to a stop at a light and immediately the truck went into this really hard/rough idle. Sideview mirrors were vibrating pretty good and the engine was making a lot of racket. Light turns green, I start off slowly, idle had subsided and at 10mph I get this really hard and loud "lurch" at 30mph it did it again, although considerably less noticeable. I was stopped at two or three lights on the way home, and each time the same sequence of events. Got home and truck sat for about 30 minutes, started it up and drove off absolutely no problem. Thoughts or suggestions?- posted
20 years ago