There are 4 on my 96 MGM one on each side before(upstream) the catalytic converter and two after(downstream) within 2ft of each other
How many o 2 sensors on a 2001 grand marquis
four two upstream and two down
The 2003 Mercury Grand Marquis came equipped with the 4. 6L V8. Oxygen (O2) sensor locations are upstream and downstream (before and after the catalytic converters).
p0141 is for the sensor behind the catalytic converter.
mass air flow sensor, O2 sensors, bad fuel pump
On the left bank of the motor, 2nd sensor to the rear.
In the exhaust pipe.
An O2 sensor unscrews just like a spark plug.
Ain't no fixing an O2 sensor. If there is a problem with it, replace it with a new one.
My 1996 Grand Marquis had the same problem, if you are getting bad fuel economy, it is most likely the O2 sensor (the first one on the driver's side before the exhaust system). If you have a code for both bank one and two, then you probably need to clean or replace your mass air flow indicator.
you dont.
location of relay for heated o2 sensor 1999 jeep Cherokee sport