Bank 1 is the passenger side of the engine in a Mercury Mountaineer ( V6 + V8 )
Sensor 2 is after the catalytic converter ( downstream )
How do you unplug an oxygen sensor on a 2003 Chevy Cavalier
it's a rain sensor
4
On a 2003 Mercury Mountaineer : In the power distribution box ( which is " live " ) located in the engine compartment on the drivers side : ( # 41 is a 15 amp mini fuse for the HEGO , VMV , CMS , PTEC ) HEGO stands for Heated Exhaust Gas Oxygen ( sensor ) You can view the 2003 Mercury Mountaineer owners manual online at : www . motorcraft service . com ( no spaces ) Click on Owner Guides ( the fuses and relays section starts on page 166 and the power distribution box diagram is on page 171 )
It is the oxygen sensor.
The bank 1 oxygen sensor on a 2003 Ford Taurus is located on the motor. It is on the top, back part near the firewall.
the lamba sensor is located inside the maifold
pass. side rear
A 2003 Chrysler van has two oxygen sensors in the exhaust pipe on the rear of the engine.
Screwed into the exhaust system.
Under the steering wheel
its connected to Muffler & Exhaust