revs sticking from cold start?

[henderson]

hi all,i've noticed a few times recently that my revs seem stick at 2000rpm when i first start my car on a morning,this only lasts for around 20 to 30 seconds then they drop off to where they should be,at times i can also make the revs drop by blipping the throttle,the car used to rev at around 1200rpm when cold before so just wondered if anyone knows why its changed? cheers

 

[N0ddie]

Is this not just the auto-choke working its thing?

 

[Smith200]

Mine does this most mornings especially when cold but yeah as noddie said its most probably the auto choke doing its thing

 

[henderson]

yeah well i thought that but just seems strange how its started to rev the car higher all of a sudden

 

[Foxspeed]

Is this not just the auto-choke working its thing?

theres no "choke" anymore on modern f-i engines.....it just puts a bit more fuel in and a higher engine speed etc

its also set to get the "cats" up to temperature quickly