P0171 and P0175
#1
02-12-2008, 08:12 PM
Join Date: Feb 2008
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P0171 and P0175
Hello, I have a 97 Explorer that is running rich on bank 2, lean on bank 1 and misfiring on cylinders 3,4,5 and 6!
I have a SNAP-ON scanner and checked the switching of the O2 sensors and they are switching fine (~100mv-750mv).
I tried spraying fuel injector cleaner around the intake manifold gasket joints but this did not affect the O2 readings.
One bank fuel trim is at +25% and the other is at -17%. Power braking the engine brings both percentiles towards zero.
HELP!
James
I have a SNAP-ON scanner and checked the switching of the O2 sensors and they are switching fine (~100mv-750mv).
I tried spraying fuel injector cleaner around the intake manifold gasket joints but this did not affect the O2 readings.
One bank fuel trim is at +25% and the other is at -17%. Power braking the engine brings both percentiles towards zero.
HELP!
James
#2
02-13-2008, 10:19 AM
Cargo Master
#3
07-21-2020, 05:16 PM
Hello, I have a 97 Explorer that is running rich on bank 2, lean on bank 1 and misfiring on cylinders 3,4,5 and 6!
I have a SNAP-ON scanner and checked the switching of the O2 sensors and they are switching fine (~100mv-750mv).
I tried spraying fuel injector cleaner around the intake manifold gasket joints but this did not affect the O2 readings.
One bank fuel trim is at +25% and the other is at -17%. Power braking the engine brings both percentiles towards zero.
HELP!
James
I have a SNAP-ON scanner and checked the switching of the O2 sensors and they are switching fine (~100mv-750mv).
I tried spraying fuel injector cleaner around the intake manifold gasket joints but this did not affect the O2 readings.
One bank fuel trim is at +25% and the other is at -17%. Power braking the engine brings both percentiles towards zero.
HELP!
James
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