Explorer, Sport Trac, Mountaineer & Aviator1991-1994, 1995-2001, 2002-2005, 2006-2010 Ford Explorer
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well, i went around town pricing o2 sensors today. by the time i had made to the 3rd auto parts store, the cel disappeared. is this normal? i assume that the sensor is still going bad. should i wait for the light to come on one more time before i replace? thanks for your help
John, I've had that happen before. The MIL would come on and then go off again, usually when driving on the interstate, and then changing to in-town driving. It means the O2 sensor is going bad (or getting covered with carbon), and will fail eventually.
You can change it at your leisure. I'd pick a nice sunny fall day, rather than wait until it gets cold. It'll probably run a lot better and get better mpg with a new one.....
00 Explorer Sport 4x2, 4.0 ohv, 5R55E, 3.55 diff
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