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Old 06-18-2009, 03:27 PM   #4
the misanthropist
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Join Date: May 2002
Location: a house
Posts: 6,248
If a car you just bought fails emissions, replace the spark plugs and O2 sensor before guessing. Buy an O2 from a 5.0 Mustang from Crappy Tire for 55 bucks (exact same Bosch sensor), crimp on the connector from your old one. If it still fails at that time, then start thinking.
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