Hi people,

I'm in need of some help and advise and hope you can help.

my 51 plate golf mk4 GT TDI 130 has started making a hissing noise when i accelerate. A couple of months ago the MAF sensor was replaced as the car was running real slow. Once the MAF was replaced the power can back and everything seemed fine.

But now I’ve noticed this hissing noise which starts when accelerating. If I drive real slow blow 2000 revs I cant hear the noise. Any more revs and the hissing starts, drop the revs and it goes.

Someone has told me it could be the wastegate valve on the turbo? I#Does this sound right?

I’m not sure where is best to take my car to be diagnosed. I hope you can help.

Thanks

Lee