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>I supplied a 1.6 Zafira for a customer who was looking >for a people carrier. The engine management light was >on so a lambda sensor was replaced, as per the code >reading. It had also just had a CAT. The customer >reported the car had gone into safe mode at 60mph, >when they put their foot down. Fault code read knock >sensor, so that was replaced. Then same problem, code >said knock sensor again, and fault not known. Mechanic >said car had no oil in it (again)(I thought the >customer was just slack, but they have only done 1000 >miles max). Vauxhall could not find a fault on their >Tech 2 test. I am picking the car up today and will be >asking a few questions!!! Car is a 51 plate 2002 with >40k on clock. When I booked it in, funnily enough the >woman at reception said, have you checked the oil as >it triggers the knock sensor, which tells me this is >something common. Test drove the car after picking it >up, its quiet, no smoke, no back pressure, so I assume >the oil is clogging the CAT. Next task is to monitor >the oil use, over a longer period. I will let you >know. Jez Bedford

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