when my ford puma 1.7 is cold and I start it up it revs up to 2000 rpm for about 3 seconds then drops to about 1000.
but if I shunt it about on my driveway it will rev up towards 3000 on tickover for a few seconds.
its spot on when it is hot and at any other time except if it is a cold day.
it has had a new idle speed control valve fitted and new throttle switch and ive changed the air flow meter and throttle body gasket and exhaust gas sensor.
any ideas?