O2 question
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Senior User
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O2 question
Sensor 1 bank1 Was staying on lean
Sensor 2 bank 1 was flopping rich to lean as it should
Replaced sensor 1 bank 1. Now it switches lean to rich not fast and truck runs like ****. Sensor 2 bank one now suck on lean. And is new.
Runs but not full power with with sensor 1 bank 1 un hooked.
No cat no leaks. No misfires. 99 f250 sd. V10. .
I have another posting here on what's been done
https://www.ford-trucks.com/forums/1...-v10-help.html
Sensor 2 bank 1 was flopping rich to lean as it should
Replaced sensor 1 bank 1. Now it switches lean to rich not fast and truck runs like ****. Sensor 2 bank one now suck on lean. And is new.
Runs but not full power with with sensor 1 bank 1 un hooked.
No cat no leaks. No misfires. 99 f250 sd. V10. .
I have another posting here on what's been done
https://www.ford-trucks.com/forums/1...-v10-help.html
Senior User
Joined: Mar 2008
Posts: 342
Likes: 1
From: Maple Ridge, Canada
You should be dealing with a OBD1 emissions which would have bank 1 sensor 1 and bank 2 sensor 1. In your other thread as well as here you reference a bank 1 sensor 2 (post CAT catalyst monitor). To my understanding the California trucks were fitted OBD II not something I'm certain of just read it here on FTE.
Your code reader wouldn't show a signal for a sensor 2 unless it was OBD2 so maybe something is plugged in wrong after someone remover the CAT.
Or maybe it's just a typo and I just wasted lots of words.
Good luck.
Your code reader wouldn't show a signal for a sensor 2 unless it was OBD2 so maybe something is plugged in wrong after someone remover the CAT.
Or maybe it's just a typo and I just wasted lots of words.
Good luck.
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Senior User
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I may of said it wrong lol. We're talking both upstream sensors. Sensor 1 bank one pass side
Sensor 2 bank 1. Drivers side. Both upstream.
When sensor 2. Is pluged in works fine as long as sensor 1 bank 1 is unpluged. Runs ok but not right. When sensor 1 bank 1 is pluged in. Sensor 2 bank one does not switch and sensor 1 stays rich and floods the truck. I hope I said it right this time.
Sensor 2 bank 1. Drivers side. Both upstream.
When sensor 2. Is pluged in works fine as long as sensor 1 bank 1 is unpluged. Runs ok but not right. When sensor 1 bank 1 is pluged in. Sensor 2 bank one does not switch and sensor 1 stays rich and floods the truck. I hope I said it right this time.
Hotshot
Joined: Jan 2004
Posts: 19,760
Likes: 1,079
From: St Louis
The correct nomenclature is bank 1 (passenger side) bank 2 (driver side) and sensor 1 (upstream) and sensor 2 (downstream)
Therefore:
B1S1=Passenger Upstream
B2S1=Driver Upstream
B1S2=Passenger Downstream
B2S2=Driver Downstream
Downstream sensors are ONLY on the OBDII vehicles but not on OBD1 Super Duty trucks. Some OBDII variations may have only a single downstream sensor. Downstream O2 sensors are only there to monitor converter performance.
Therefore:
B1S1=Passenger Upstream
B2S1=Driver Upstream
B1S2=Passenger Downstream
B2S2=Driver Downstream
Downstream sensors are ONLY on the OBDII vehicles but not on OBD1 Super Duty trucks. Some OBDII variations may have only a single downstream sensor. Downstream O2 sensors are only there to monitor converter performance.
Thread Starter
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Senior User
Joined: Oct 2013
Posts: 105
Likes: 0
The correct nomenclature is bank 1 (passenger side) bank 2 (driver side) and sensor 1 (upstream) and sensor 2 (downstream)
Therefore:
B1S1=Passenger Upstream
B2S1=Driver Upstream
B1S2=Passenger Downstream
B2S2=Driver Downstream
Downstream sensors are ONLY on the OBDII vehicles but not on OBD1 Super Duty trucks. Some OBDII variations may have only a single downstream sensor. Downstream O2 sensors are only there to monitor converter performance.
Therefore:
B1S1=Passenger Upstream
B2S1=Driver Upstream
B1S2=Passenger Downstream
B2S2=Driver Downstream
Downstream sensors are ONLY on the OBDII vehicles but not on OBD1 Super Duty trucks. Some OBDII variations may have only a single downstream sensor. Downstream O2 sensors are only there to monitor converter performance.
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beefster
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May 24, 2006 05:06 AM
