...86 Buick V-6 (3.8) with 120,000 miles: idles too fast in "D"rive, BUT idles at normal speed when put in "N"uetral". TPS (throttle position sensor) had been replaced previously, and still checks OK with an ohmmeter. I could not see any obvious vacuum hose leaks. I also had the battery disconnected for awhile to reset computer. (still drives at 20 mph with foot off throtlle). Does this OK-in-Neutral provide a significant clue?? Thanks for any suggestions.
- posted
18 years ago