Pre Cat O2 Sensor. Pre Cat O2 Oxygen Sensor Daihatsu Sirion 1.3ltr K3VE2 M101S 20002005 Form: Not sure if the sensor itself is any different but I know the connectors are (at least on the 04's) Rear O2's monitor catalytic converter performance they do not determine fueling with the exception of COT (Cat Over Temperature) which will signal the ECM to dump fuel into the cylinders to cool the cats
Pre Cat Oxygen Sensor O2 For Nissan Patrol Y61 4.5L TB45E 200SX 240SX ozautosport from ozautosport.com
O2's are generally good up to about 100k or less, so if you have over 141k on your car and they have not been changed out, probably good preventative maintenance suggests that changing them out now is a good idea. From my understanding, I have the post face lift year so the connections for the pre cat sensors are the squared ones, not the cylinder ones like the post cat sensors and they sit on top of the engine, and not above the exhaust manifolds.
Pre Cat Oxygen Sensor O2 For Nissan Patrol Y61 4.5L TB45E 200SX 240SX ozautosport
Basically, I have a 2005 BMW 325i and I am trying to replace the pre cat o2 sensors Rear O2's monitor catalytic converter performance they do not determine fueling with the exception of COT (Cat Over Temperature) which will signal the ECM to dump fuel into the cylinders to cool the cats The pre-cat sensor is fitted into the exhaust pipe before the catalytic converter, and cars using the new EOBD2 also have a post-cat lambda sensor.
Hyundai i30 PreCat O2 Oxygen Sensor 1.6ltr G4FD GD Wagon 20132016 *Genuine OEM*. I just wanted to include one last thing which is about installing your own Pre-Cat O2 sensors which are much simpler and probably would only take you 30 minutes tops. The sensor had done 67,000 miles and early symptoms of failure, before the engine light came on, was that the car would run rough or even stall during weather below 10 degrees C
Bosch Oxygen Sensor (PreCat) for Audi A3 8V, A4 8K B8, Q3 8U, Q5 8R 2.0L TDI 4c eBay. Rear O2's monitor catalytic converter performance they do not determine fueling with the exception of COT (Cat Over Temperature) which will signal the ECM to dump fuel into the cylinders to cool the cats The pre- and post-cat O2 sensors look to be identical, the only visible differences being the wire lengths, and connectors