Over reving

[dydigital]

Hi people, I know this answer may be somewhere in here but dont know where to look.

I have a Volvo 850 T5, only had it a few weeks. But it over rev's when you clutch to change gear.

Now it has a dump valve and i'm told the original waste gate is still on the side of the turbo and may need plating off. is this true and will it solve the problem?

[Taff - t5]

The air idle control valve and throttle body probably needs cleaning.

[t5 stealth]

The air idle control valve and throttle body probably needs cleaning.

i 2nd that

[Rnash2002]

Or could be a air leak,then again what do you mean by over reving? what does it tick over at?