revs high then back to normal.

Hi I have a 1997 sentra with a 1.6, and 5 speed. when driving and I come to a stop and take it out of gear or in stop and go traffic the engine revs up for about 2 sec. then comes back down to normal.

9 times out of 10 it is the idle air control valve causing this. sometimes removing and cleaning can fix the problem other times it needs a replacement.

and there you have it!

Well on my 1.6 there isn't an idle control valve, its a electronic switch that kinda hooks onto the throttle body. The problem with mine is that if you rev it high then let off of the throttle and have it into neutral the car will stall sometimes, while other times it doesn't. The car is from 91, so I'd imaging that it's a bad electrical connection or something like that.

PS just checked a manual, and Nissan calls it an Auxiliary Air Control :rolleyes: