O2 Sensor Questions
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O2 Sensor Questions
Hi Guys,
Need help on an O2 sensor problem. I've done some searching and haven't been able to find the answer.
I have a 1996 SC 300 manual w/o traction control. My check engine light came on and it suggested that it was the O2 sensor pre cat. I had them replaced. Now the light is back suggesting that its the post cat sensor. I think I have 2 post cat O2 sensors. When I looked for the part at rockauto and oxygensors.com it is telling me that I only have one post cat sensor? I'm confused because I thought I had 4 in total (2 pre and 2 post cat). Also, the one post cat appears to have a plate with 2 holes on it. I can't find this part. What am I missing here??
Need help on an O2 sensor problem. I've done some searching and haven't been able to find the answer.
I have a 1996 SC 300 manual w/o traction control. My check engine light came on and it suggested that it was the O2 sensor pre cat. I had them replaced. Now the light is back suggesting that its the post cat sensor. I think I have 2 post cat O2 sensors. When I looked for the part at rockauto and oxygensors.com it is telling me that I only have one post cat sensor? I'm confused because I thought I had 4 in total (2 pre and 2 post cat). Also, the one post cat appears to have a plate with 2 holes on it. I can't find this part. What am I missing here??
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Thanks guys. I called the local Lexus dealership and they are saying I have 3 O2 sensors. The parts guy at Lexus said that the plate I was referring to is basically a gasket cover, which I would have to take off to access the sensor.
Jonny - you're drawing clearly shows 4 sensors. Do you know if #12 & #13 are the same part like #10 & #11?
I called my mechanic and he swears there are 4-O2 sensors. However, anyone that looks at a manual tells me there are 3. I didn't think this would be so hard. I just need to get under the car and figure it out and then figure out what if the post cat O2 sensors are the same...
Anyone have a drawing/picture of the under carriage?
Jonny - you're drawing clearly shows 4 sensors. Do you know if #12 & #13 are the same part like #10 & #11?
I called my mechanic and he swears there are 4-O2 sensors. However, anyone that looks at a manual tells me there are 3. I didn't think this would be so hard. I just need to get under the car and figure it out and then figure out what if the post cat O2 sensors are the same...
Anyone have a drawing/picture of the under carriage?
Last edited by TRM09; 04-27-10 at 10:10 AM.
#7
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[QUOTE=TRM09;5439038]Thanks guys. I called the local Lexus dealership and they are saying I have 3 O2 sensors. The parts guy at Lexus said that the plate I was referring to is basically a gasket cover, which I would have to take off to access the sensor.
Jonny - you're drawing clearly shows 4 sensors. Do you know if #12 & #13 are the same part like #10 & #11?
Front Sensor is identified as part# 8946514120 and the rear sensor is part# 8946529895
Bottom illustration shows you which bank is which:
Jonny - you're drawing clearly shows 4 sensors. Do you know if #12 & #13 are the same part like #10 & #11?
Front Sensor is identified as part# 8946514120 and the rear sensor is part# 8946529895
Bottom illustration shows you which bank is which:
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#8
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EyeSoarer6, that was very helpful. So since I'm looking to get the post cat sensors then I'm looking for Bank 1-Sensor 2 and Bank 2-Sensor 2. Judging by the part #, both sensors are the same. www.oxygensensors.com has the Denso 234-4214 which I think works. I hope this gets rid of my check engine light and can pass emissions and get a new license plate sticker!!!! Wish me luck!
One last question, your figure 5 states V6 FWD. As you know, the SC300 is an I-6 RWD. Is this still correct?
One last question, your figure 5 states V6 FWD. As you know, the SC300 is an I-6 RWD. Is this still correct?
#11
Now I'm confused... The part # I have is 89665-24070.The Lexus dealer said that the O2 sensors (there are only 2 on my car according to them) are the same part...
I called many auto stores around town and most of them say there are 3... I cannot find the other one ???
I called many auto stores around town and most of them say there are 3... I cannot find the other one ???
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