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P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1) does not necessarily mean the O2 sensor was bad, and for sure does not mean the catalatic conveter was bad. Stop throwing parts at this problem and take it to a professional, before you replace any more unnessary parts. You would be money ahead if you had done that is the first place.
What else can I help you with?
How to replace spark plugs on Mercury Mountaineer?
how to change spark plugs on a 97 mercury mountaineer
How do you replace vehicle speed sensor on Mercury Mountaineer?
where is the speed sensor on 2002 mercury mountaineer
How do you replace the air brakes on a 2000 Mercury Mountaineer?
The Mercury Mountaineer has hydraulic brakes, not air brakes.
How do you replace a intake gasket on 2001 aztek?
Air filters n manifolds
What should you do to fix the horn on your 1997 Mercury Mountaineer?
replace it.
How much is the labour to replace rear brake pads on a Mercury Mountaineer?
In CT USA, a garage would charge 1 hour labor to replace the rear brake pads on that Mountaineer.
How do you fix a exhaust leak in the manifolds in a 1994 v6 camaro?
Either weld or replace.
How do you replace battery cables 1999 mercury mountaineer?
To replace the battery cables on a 1999 Mercury Mountaineer, loosen the connectors at the terminals. After this, remove the other end of the cables and install new ones.
How do you replace the fuel filter on a 1999 Mercury Mountaineer?
take it off
How do you replace the valves in a Chevy 350 engine?
this is a mechanics job you have to remove inlet manifold,exhaust manifolds,and then remove heads to replace the valves
Can you replace just the bulb on a headlight of a 1998 Mercury Mountaineer?
Yes , according to the 1998 Mercury Mountaineer Owner Guide : ( the headlight bulb is # 9007 )
How do you replace the AC Clutch on 1997 Mercury Mountaineer 5.0L?
Use a hammer
