Now and again when I start my car, regardless of whether the car, or outside air temp is hot or cold the revs rise to 1500 rpm and stick there, but if I drive to the end of the street and stop, it idles fine at around 700rpm. The car goes through fazes, sometimes it'll happen every day of the week, and other times it wont happed for ages.
I've read old threads about revs sticking etc but mine only happens on start up, and very intermittently, which is confusing. The engines a 1.6 16v in a 1999 SXi. Any ideas on what is the problem are much appreciated.