Vauxhall Astra noise when accelerating

Car: Vauxhall Astra
Variant: 1.6 Twinport
Model Year: 2006
Categories: Running Rough, Starting & Power Loss
if you rev the car on the spot the noise doesn't happen, but when i put my foot down to accelerate, after 3000 rpm onwards it makes a squealing noise, and i feel like the car has lost its power slightly, can anybody help please????
Posted: Jan 16, 2014 (10 years ago)
Could be a slipping belt , maybe coming from alternator when under load .Not coming from clutch slip ?
Posted Jan 16, 2014 (10 years ago)
not slipping clutch, but maybe belt could it not be the tensioner?
Posted Jan 16, 2014 (10 years ago)
May well be , especially if belt worn .
Posted Jan 16, 2014 (10 years ago)
thank u for ur help and any ideas of y its losing power?
Posted Jan 17, 2014 (10 years ago)

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