Yes/No- When the catalytic converter is not performing correctly it is usually due to excess buildup that is clogging the small internal passages in the converter these small passages can not be serviced,cleaned ect. and the converter must be replaced and depending on the type of vehicle these converters can cost as high as $450 dollars..
However there is a temporary fix that can be done until the converter can be properly replaced....simply cut the exhaust pipe just behind the welds on the inlet/outlet tubes of the converter and remove the converter then using 2 exhaust pipe couplings,4 clamps and a small section of exhuast pipe and replace the missing section...This may cause the check engine light to remain on while driving,but the vehicle will be operational,this fix should only temporary as the vehicle will not pass emmission testing...
There are 2. One in front of catalytic convertor and one behind the catalytic convertor.
No
No, it must be replaced.
After the catalytic convertor. Sensor one is before the convertor.
the catalytic convertor
My Chilton repair manual engine wiring schematic, for the 1996 Ford Explorer with a 4.0 L OHV engine shows 3 . Two are upstream (before the catalytic convertor) and one downstream (after the catalytic convertor - which is an oxygen sensor but is used to monitor the efficiency of the catalytic convertor)
half way down the exhaust
Catalytic Convertor
Bad catalytic convertor(s) is a possibility.
On the 3.0 L and 4.0 L there are 2 oxygen sensors at the front and 1 oxygen sensor (which monitors your catalytic convertor efficiency) at the back after the exhaust gasses have passed through the convertor. On the four cylinder engine - 1 oxygen sensor at the front - 1 oxygen sensor at the back (downstream of catalytic convertor - monitors catalytic convertor efficiency) Helpfull
It would be mounted in the exhaust pipe downstream of the catalytic convertor Helpfull
Diesels as a rule don't have catalytic converters. THey might have particle filters though.