Higher idle when cold.

[DustPuppy]

My Cordoba 1.6 Signo has suddenly started to have higher idle rev's when cold.
It used to run at aprox 8-900 rpm's idleing when cold, but not it up's to about 1200 for a few minutes. Then it suddenly drops to the usual 8-900.
It takes some three minutes or so. Its almost like i sit and press the accelerator and then let go.
And the wierd part is that its not every day it does so!
Only like 75% of the time...

Anyone have an idea?

 

[cordobabrendy]

Car engines are supposed to run at slightly higher engines, this gets them warmed up to a certain level. maybe you have either a temp sensor or coolant sensor playing up, get it onto vagcom (perhaps someone near you has it) and see if there are any faults.

 

[DustPuppy]

Car engines are supposed to run at slightly higher engines, this gets them warmed up to a certain level. maybe you have either a temp sensor or coolant sensor playing up, get it onto vagcom (perhaps someone near you has it) and see if there are any faults.

The odd part is that it never did that before.
It started just a month ago or so..

I am to run a complete checkup soon, as i have to change the clutch and suspension. I hope to catch the problem then....