Thread: 2001 gagt1
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Old 01-22-2011, 05:24 AM   #11
does not compute
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Join Date: Feb 2007
Location: Ajax, Ontario
Age: 35
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Your car runs on a low mileage & consumes too much fuel..when was the last time you replaced the o2 sensor?

The missfire would usually be caused when a bad o2 sensor affects the air/fuel mixture and engine combustion. It's more evident @ idle or running at a very low speed.

Same with the rough idle..O2 sensor plays a significant role in regulating the air/fuel mixture, engine timing and intervals between engine combustion, ther's no doubt a bad oxygen sensor will cause the engine to run rough or irregularly.

Any engine pinging? A bad O2 sensor either retards or advances the engine ignition timing, which will cause engine pinging.
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