Car revs high on start up then goes normal

1996 Vauxhall Corsa
Car: Vauxhall Corsa
Year: 1996
Categories: Running Rough, Starting & Power Loss
On starting the car the revs go very high to 2000rpm then they drop to a normal 900 rpm.
This also happens when the car is warm what could be the problem.Thanks
Problem added: Feb 14, 2010 (14 years ago)
Stepper motor - idle speed valve (if fitted) or temp sender
Answered Feb 15, 2010 (14 years ago)
Thanks for that Jake will check
Answered Feb 15, 2010 (14 years ago)

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