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View Full Version : My 91 runs rough in "drive"


tinman332
05-20-07, 07:00 PM
My 91 coupe runs great on the highway and idles pretty smooth in park or neutral. But when I'm in drive and stopped at a red light, the idle seems to surge downward every few seconds, then rebounds to smooth idle. Then a few seconds later same thing, feels like it's going to stall out, dashboard lights flicker, etc. then bounces back.
Tune-up, new plugs, etc. about 500 miles ago so I don't think that's it.
I'm not much of a mechanic so I hope it's something simple. Any help or suggestions would be greatly appreciated.
Thanks,
Barry

Tony B.96LT4
05-21-07, 06:41 PM
Could be a dirty Throttle Body. Was it cleaned with the tune-up?