Quote
Is the "RPM hold" being discussed really the same as the Rev Limiter? I don't see how the IAC valve could control max RPMs... that is usually done with the ECU.


No, this is the sometimes annoying habit of the IAC "holding" the engine revs elevated for a second or two before it drops down to curb idle. It's actually the ECM commanding the IAC to do that. Seems to do it much more in the Summer when the A/C is on. Apparently the older IAC does it more frequently and possibly at a higher RPM.

You'll see this more on the stick shifts when you throw the clutch to come to a stop. You won't see it with the automatics.

1998 Sportage - Gone.
2004 Honda Civic Coupe.
2007 Suzuki Grand Vitara - She got it.