[bill]

De-gunked the IAC last night (big thanks to the Electric Dream and Haynes ). Car idles MUCH better and also boosts better, feels smoother !

I am not that competent so don't know where all the gunk comes from....any offers? Also, how often is a de-gunk necessary? Can the build up of gunk be prevented?

Taking off the air ducts and hoses was OK but I wondered, as you do, is it worth replacing them? Would there be any benefit? What would it cost? Is it an OE jobby or are there better/cheaper alternatives? The car is 1989 9000 turbo.

Cheers,

Bill

 

[Paul D]

so don't know where all the gunk comes from[/b]

The engine breather. Hence vapourised oil (intended to lubricate upper cylinders via air intake) collects on the sides of the ICV.

As this is normal, I can't see any point replacing hoses unless they have perished or been damaged.