Might Be A Turbo Problem !

[nutnut]

Went out tonight, Car was driving very well.

On the way home i hit the boost as you do

Then when i stopped at some lights i put the car in N ( car is an auto )

It starts reving up & down on its own you can also hear the turbo chatter with the windows closed and no feet on the pedals .

got a vid clip on my phone which might help

It feels like something might be stuck open as when i put the car back into drive it speeds up on its own .

Any ideas guys !!

[Steve GT]

sounds like boost leak to me dude

mine used to do that cause the pipe coming from the turbo feeding the boost gauge was loose under my footwell and i kept catching it and breaking the join

so it used to sit there in idle revving up and down

if you have a boost gauge check the pipe feeding it hasnt come apart from somewhere if not check the whole turbo system pipes joins etc

[Steve GT]

just thought of something else whens the last time you changed your fuel filter? if its been a while they can sometimes clog up with crap and restrict the fuel coming through, this could cause the up and down idling if its not letting a consistant level of fuel through

hope this helps

[nutnut]

solved the problem.

It was the small black hose that joins the pcv valve to the inlet manifold , It developed a split.

Replaced it , car idles sweet now.

Checked all the other pipes as you suggested & all look fine.

Gonna do a service on the car soon so i will do the fuel filter then.

Cheers Badass for your advice