help

[bobby orange]

hi can anyone help me when i sitting on idle the revs race up and down from idle precision (1,000 to 400 back to idle) sometimes and also when i drive it sometimes it stutters. thanks :?:

[drsmith1979]

idle speed control valve? could do with a clean?

does it do it when hot or cold? or both?

[wavy]

icv idle control valve
iv read of this prob a few times
clean it
some 1 who has done it will help with more info

[bobby orange]

hi
it does it when its warm but it dont do it all the time
thanks

[drsmith1979]

sounds like idle speed control valve... really easy to clean, the valve is located in the inlet manifold, its got a pipe going into the airbox and a pipe going into manifold, sometimes it sticks, real easy to take off and spray some carb cleaner in there and use a cotton bud to help the valve move around, i think theres a guide in the members section, obviously for members only lol

[bobby orange]

im new to the williams so if any one has some pics of what i might have to do, it will be nice
thanks

[bobby orange]

i have got a k.n air filter
im going to have a look at it see if i can sort it
thanks for the help

[drsmith1979]

do a search on icv or iscv, there will be loads of info on it

[bobby orange]

could it be the throttle precission sensor

it looks like a wire is on its way out
thanks

[drsmith1979]

that is another culprit, but considering that these cost a fair bit new, i would go with the cheaper option of cleaning your iscv first 8)