Persistent P0133 Primary o2 Slow Response
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Persistent P0133 Primary o2 Slow Response
For a little background:
I am running an Ultimate Racing log setup at 9 psi. Controlled by Greddy Emanage Ultimate and tuned at Ptuning.
I have been having an annoying issue for quite a long time (CEL P0133- Primary o2 Slow Response). I have read through pretty much every thread on s2ki that mentioned this code. I replaced the o2 sensor late last year with an aftermarket Delphi from Rockauto. Problem still persisted for quite some time. I just ignored it and kept failing emissions...
That brings us to now where I want to get this issue fixed for good. I ponied up and bought a Denso from Rockauto (they had it listed as "OE" compatible, thinking that maybe the Delphi I bought was bad). Threw it in yesterday and the CEL popped again this morning.
Maybe anyone here can shed some light. I noticed that my primary o2 sensor has an extender installed. Since I was not the original owner who put this turbo kit and exhaust onto the vehicle I do not know the reasoning behind having this extender installed. I am thinking that this extender may have the o2 sensor pulled out of the flow too much which is causing a "slow response" since the exhaust isn't flowing directly over the tip of the sensor. This afternoon I am going to remove the extender and place the sensor directly onto the exhaust and see if that fixes it. I also do not how much/if any this will effect my tune since the GEMU is a piggy-back and the ECU uses the primary o2 for feedback on a/f ratio control (could be wrong here...).
I was just wondering if anyone else has run into this problem and what they did to fix it.
Few pics below:
Car in question:
Extender that has been on the car (after recieving a nice ultrasonic bath to clean it):
New Denso (left) vs. old Delphi (right) side 1:
New Denso (left) vs. old Delphi (right) side 2:
Thanks for reading. Any input and/or advice is appreciated!
*edit* - I hope this is the correct forum for this- I debated putting it here or S2000: Under the Hood. If any mods think it should be moved, feel free
I am running an Ultimate Racing log setup at 9 psi. Controlled by Greddy Emanage Ultimate and tuned at Ptuning.
I have been having an annoying issue for quite a long time (CEL P0133- Primary o2 Slow Response). I have read through pretty much every thread on s2ki that mentioned this code. I replaced the o2 sensor late last year with an aftermarket Delphi from Rockauto. Problem still persisted for quite some time. I just ignored it and kept failing emissions...
That brings us to now where I want to get this issue fixed for good. I ponied up and bought a Denso from Rockauto (they had it listed as "OE" compatible, thinking that maybe the Delphi I bought was bad). Threw it in yesterday and the CEL popped again this morning.
Maybe anyone here can shed some light. I noticed that my primary o2 sensor has an extender installed. Since I was not the original owner who put this turbo kit and exhaust onto the vehicle I do not know the reasoning behind having this extender installed. I am thinking that this extender may have the o2 sensor pulled out of the flow too much which is causing a "slow response" since the exhaust isn't flowing directly over the tip of the sensor. This afternoon I am going to remove the extender and place the sensor directly onto the exhaust and see if that fixes it. I also do not how much/if any this will effect my tune since the GEMU is a piggy-back and the ECU uses the primary o2 for feedback on a/f ratio control (could be wrong here...).
I was just wondering if anyone else has run into this problem and what they did to fix it.
Few pics below:
Car in question:
Extender that has been on the car (after recieving a nice ultrasonic bath to clean it):
New Denso (left) vs. old Delphi (right) side 1:
New Denso (left) vs. old Delphi (right) side 2:
Thanks for reading. Any input and/or advice is appreciated!
*edit* - I hope this is the correct forum for this- I debated putting it here or S2000: Under the Hood. If any mods think it should be moved, feel free
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