05 renault trafic 100cdi?

clutch makes a tinging sound when pedal is pressed full to the floor also need to pump pedal to bring up pressure but the real question is the low power, when clutch is pressed to the floor the engine rev's free up to 3000rpm but no further, and if you don't press the clutch down it rev's sluggish to around 2500, when turbo kicks in sending rev's to 4500 van struggles to pull 5&6th gears is there censors between clutch and crank? and what might the the tinging sound be?