Rapid RPM fluctuation FIXED
 

1994 Integra....223,000 miles

Had a cold idle Rapid RPM fluctuation (1800-2300) until warmup

Tried the suggestions in this newsgroup( radiator vacuum, clogged iacv, etc.)

Finally replaced fast idle valve (PART # 16500) and since this was done I have
had no rapid fluctuation in RPM

Was really bad in cold weather and we haven't had any real cold weather since
installation about a week ago.

The first freeze will be the real; test!

Hopefully this was the problem!
Keeping my fingers crossed

Neil