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Discussion Starter #1
P0133 - 02 Circuit slow: My SVT surges real bad and then throws this code. Has been happening ever since it has gotten warm in CT. Going to do some datalogging today, but could the surging cause this code or is the 02 sensor causing the surging?
 

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it definitely is a pre(front, before catalytic converter) o2 sensor.
change it and erase code. this will fix your surging problem.

but to make sure, check wiring first, remove o2 sensor for contamination.
 

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Discussion Starter #4
Out of curiosity, how do you know its the front. Car only has 20k miles but it is 11years old
 
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