O2 Sensor questions
#1
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O2 Sensor questions
Hello,
I have read the threads but could not find anything on what I need to ask. I hope you Lexus/Denso experts out there can help me out on this...
A bit of background: I own a 2nd Gen Lexus '2005 RX300 (1MZFE) imported from the Singapore market. I do not believe similar model of the RX300 was ever released to the US market - you guys went straight from the old 1st Gen RX300 to 2nd Gen RX330 (3MZFE). Obviously the difference was mainly the engine cc as the name suggests.
Anyway, I have a check engine and VSC lights on. I ran the diagnostics on my RX300 and found that I need to replace the "O2 sensor Bank 2 Sensor 1". Found the location of the sensor. So far, all is clear.
Went online and found several Denso O2 sensors (mainly for the RX330 and RX350). Before I purchase anything.. I have some questions:
1) Would I be able to use the O2 sensor for the RX330/RX350 if it is physically an exact fit to my RX300 (I believe it is)?
2) Would the difference in engine cc (3.3L V6/3.5L V6 vs 3L V6) affect the O2 sensor inputs to the car's computer?
3) Has anyone got a list of part numbers for the O2 sensors found on the RX300?
I hope I was able to describe the issues and questions clearly to you guys. English is not my 1st language. Please do tell me if you need more information.
Thank you and I hope to hear your responses soon.
Reefo
RX300
I have read the threads but could not find anything on what I need to ask. I hope you Lexus/Denso experts out there can help me out on this...
A bit of background: I own a 2nd Gen Lexus '2005 RX300 (1MZFE) imported from the Singapore market. I do not believe similar model of the RX300 was ever released to the US market - you guys went straight from the old 1st Gen RX300 to 2nd Gen RX330 (3MZFE). Obviously the difference was mainly the engine cc as the name suggests.
Anyway, I have a check engine and VSC lights on. I ran the diagnostics on my RX300 and found that I need to replace the "O2 sensor Bank 2 Sensor 1". Found the location of the sensor. So far, all is clear.
Went online and found several Denso O2 sensors (mainly for the RX330 and RX350). Before I purchase anything.. I have some questions:
1) Would I be able to use the O2 sensor for the RX330/RX350 if it is physically an exact fit to my RX300 (I believe it is)?
2) Would the difference in engine cc (3.3L V6/3.5L V6 vs 3L V6) affect the O2 sensor inputs to the car's computer?
3) Has anyone got a list of part numbers for the O2 sensors found on the RX300?
I hope I was able to describe the issues and questions clearly to you guys. English is not my 1st language. Please do tell me if you need more information.
Thank you and I hope to hear your responses soon.
Reefo
RX300
#2
I would follow the engine model not the year model
North Amercian Model:
2003 RX300 1MZFE
Part Number: 8946748011 Front
Part Number: 8946549075 Rear
But I will use Denso 234-9009 Oxygen Sensor/ Air- Fuel Ratio Sensor for Ft. instead.
2004 RX330 3MZFE
Part Number: 8946548170 Front
Part Number: 894650E010 Rear
Denso 234-9042 Oxygen Sensor/ Air- Fuel Ratio Sensor for Upstream L/R instead
North Amercian Model:
2003 RX300 1MZFE
Part Number: 8946748011 Front
Part Number: 8946549075 Rear
But I will use Denso 234-9009 Oxygen Sensor/ Air- Fuel Ratio Sensor for Ft. instead.
2004 RX330 3MZFE
Part Number: 8946548170 Front
Part Number: 894650E010 Rear
Denso 234-9042 Oxygen Sensor/ Air- Fuel Ratio Sensor for Upstream L/R instead
Last edited by 5W40; 07-22-15 at 11:54 AM.
#3
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I would follow the engine model not the year model
North Amercian Model:
2003 RX300 1MZFE
Part Number: 8946748011 Front
Part Number: 8946549075 Rear
But I will use Denso 234-9009 Oxygen Sensor/ Air- Fuel Ratio Sensor for Ft. instead.
2004 RX330 3MZFE
Part Number: 8946548170 Front
Part Number: 894650E010 Rear
Denso 234-9042 Oxygen Sensor/ Air- Fuel Ratio Sensor for Upstream L/R instead
North Amercian Model:
2003 RX300 1MZFE
Part Number: 8946748011 Front
Part Number: 8946549075 Rear
But I will use Denso 234-9009 Oxygen Sensor/ Air- Fuel Ratio Sensor for Ft. instead.
2004 RX330 3MZFE
Part Number: 8946548170 Front
Part Number: 894650E010 Rear
Denso 234-9042 Oxygen Sensor/ Air- Fuel Ratio Sensor for Upstream L/R instead
1) Would it be okay to install the AF sensor in place of the O2 sensor?
2) Would the diagnostics still pick it up as "Check Engine" as it is not the part that was meant to be put there?
I appreciate anyone's inputs in the matter. Thank you.
#4
It really depends your error code scanned
If I were you, I may first clean the MAF, clean or replace air filter ,check the hoses attached at the back of air filter box and disconnect battery for 30 min. and then drive it and see!
AFIK:
1) yes
2) if the sensor is culprit then you should be fine.
If I were you, I may first clean the MAF, clean or replace air filter ,check the hoses attached at the back of air filter box and disconnect battery for 30 min. and then drive it and see!
AFIK:
1) yes
2) if the sensor is culprit then you should be fine.
Last edited by 5W40; 07-22-15 at 11:54 AM.
#5
The AF sensor (also known as a wideband O2 sensor) and the O2 sensor (narrowband sensor) output signals are very different. They are not interchangeable.
Decent explanation here
http://www.enginebasics.com/EFI%20Tu...%20Basics.html
That said 234-9009 is an air-fuel sensor and should be the correct one for your issue. Sensor 1 is the upstream sensor and is an air-fuel sensor.
Decent explanation here
http://www.enginebasics.com/EFI%20Tu...%20Basics.html
That said 234-9009 is an air-fuel sensor and should be the correct one for your issue. Sensor 1 is the upstream sensor and is an air-fuel sensor.
Last edited by JoeInHNL; 07-21-15 at 11:59 PM. Reason: Additional info added.
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