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Old 02-09-2007, 03:28 PM
pdsq99f4 pdsq99f4 is offline
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Default Re: 03 Check Engine Light Question

The misfire is caused by excessive backpressure in the exhaust due to clogged catylitic converters. Usually you will find the air filter is very dirty and causing the vehicle to run rich. This will take out the converters over time. Touchdown, I would check my air filter to be on the safe side.
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