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Exhaust question and bad MPG... 200

posted by  vvpete on  Mon Jul 29 17:17 CST 2013
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last visit: Thu Jul 10 14:10 CST 2014
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Well there ya go. Do a complete stage O which includes a new O2 sensor. I wouldn't trust a stock Bosch sensor to deliver consistent voltage sweeps after 60-70 k miles.
And the most obvious reason why the car gets bad mpg after the cat-back exhaust was put in: ALL exhaust shop mechanics like to twist up the O2 sensor wires when taking them out to re-install in a new pipe/cat. BTDT. You should undo the harness and spin the cable so the wires don't kink or bunch up. Any scrapes, kinks or breaks in the wires will make the O2 sensor external air reference not be there.






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New Exhaust question and bad MPG... [200]
posted by  TheBrickTank  on Sun Jul 28 17:50 CST 2013 >


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