Throttle Body/idle valve questions. 51 plate 1.25 Zetec SE

[jimsayshi]

The runaround Fiesta, 51 plate 1.25 Zetec SE.

At idle the car is running at 1k. A little over what it should be. Have checked for a sticky accelerator, but it's ok. Throttle Body itself snaps closed nicely and very briskly, doesn't look like there's anything wrong with the spring.

The questions are:

Do you know where the idle valve unit on the 51 Fiesta Zetec SE will be? Is it inside the TB once I take it off. Reason I ask is do you/should you change the TB gasket when removing/cleaning the TB that will need to come off if the idle valve unit is found inside it?

I suspect the problem might be that both the idle valve unit and TB butterfly valve both need a good clean. If so, what would you use? Brake cleaner/a degreaser?

And do you/should you change the TB gasket when removing/cleaning the TB? Same for the gasket that will be on the idle valve, where ever it is.







Cheers.

Edited by jimsayshi on Monday 4th July 22:27

[skene]

I'd also like to know the answer to this, after driving i.e sitting at junctions it idles at 1500ish. Obviously not right likewise no sticking throttle and TB snaps closed

[diesel piston]

Sounds like a commonish problem, hope you can find your answer here
http://www.honestjohn.co.uk/forum/post/index.htm?t...

[jimsayshi]

Thanks for the link. Will give it a full read and see if it helps. An initial skim of if looks promising.