why is my corsa 1.2 petrol losing power on hills and on the motorway

1999 VAUXHALL CORSA
60,000 MILES
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LICKSHOT
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when i drive up hill and press throttle the engine light comes on and the car will lose a little bit of power when i let my foot of the throttle the light goes off, it also does this on the motorway
Apr 29, 2012 at 4:11 PM
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