Electrical problem
2001 Vauxhall Corsa Front Wheel Drive Manual 101475 miles

my corsa has just had a crankshaft sensor refitted as it broke down on day of purchase and the aa diagnosed it as a crnakshaft sensor....but dispite not cutting out all together the engine light still comes on....near 3000 revs mainly uphill but occasionally downhill...i was just wondering what it could still be...and weather it would be worth having the car fixed....