Question about 1996 Ford Explorer
There are total of four O2 sensors.
Two before the catalytic converter and two after the catalytic converter.
If you vehicle has over 160,000 miles or failing emission test then you should test the efficiency of the catalytic converters.
The exit temp should be few degree higher then the inlet temp.
Posted on Jul 14, 2010
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Posted on Jan 02, 2017
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