Off Idle

My son has a 2001 Integra.Think it's a 1.8.The idle is fine most times then all of a sudeden the idle will bounce up and down.Doesn't die but just about.We checked for vacuum leaks and just cleaned the aic valve.Sounds like it's elctrical because it will start idling rough then just as soon as it starts rough idle it will stop.A/C is not on at the time.New wires,plugs,filters.Any suggestions?

Guess I will have to answer my own question,no one else has.Yes,Larry,you may want to change the pcv valve.That is known to go bad on those engines.Sorry you couldn't find out that on this forum.But try that and let us know!

That was the solution Larry.It's fixed and running great now I appreciate your quick response.Thank you!