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Originally Posted by m3nut  The cars on 93k not sure if the o2 sensor has ever been replaced, if not then could just be age/mileage related. After fitting it, I did give full beans (the sound with the new pulley was great  ) and did look in the mirror to see smoke behind. Does the ecu need more time/miles to learn now the o2 sensor has been replaced and lean out? |
Delayed responce but yes the computer will learn or "adapt" to the correct AFR over a certain amount of milage and driving conditions. It is about 15 minutes of driving depending how far off the baseline you are at when you start with the new sensor