Originally posted by h22avid
The O2 sensor as far as I know should not cause your car to be sluggish.
All the O2 sensor does is monitor the ratio of polluting exhaust and air exiting your motor in order for the cat to clean it up before spitting it out the tail pipe and into the environment. Basically if the level of pollutants is too high the o2 sensor will cause more air to be added to the mix which triggers a reaction in the cat to clean up the exhaust.
Is there a problem with your O2?....Maybe
Is it causing your car to be sluggish?... it shouldn't be
dont those messages being sent by the o2 get sent to the ECU? My understanding of the ECU, be it very limited, is that if the exhaust was to rich, then the O2 would tell the ECU, thus causing the ECU to to add more fuel.
Im only 85% sure if im right on that one. . .
But here is what to really dont understand. . .By adding more fuel to the mixture, would the OBDII then retard the timing inorder to "correct" the problem? or would it retard the timing? would it do neither?
If it did either, wouldnt that effect the "feel" of the car? If the timing is retarded all the way back, the car would be dropping power wouldnt it?
also, chrisexv6, how much was the sacn tool? im trying to get my dad to buy one.