Changing front O2 sensors
05-17-2004, 04:27 PM
#2
It's easy.
Necessary tools:
*3/8" drive ratchet
*16mm O2 sensor removal ratchet (rent it from Autozone for free)
*O2 sensor(s)
*Anti-seize
*Scissors
1. Put the front end of the car on ramps or jackstands
2. Using the O2 sensor ratchet attachment, loosen the current O2 sensors that are installed in the "Y" portion of the Y-pipe
3. Trace the sensor harness up to the engine bay and unplug it. One will be close to the cabin, to the left of the spark plugs; the other will be clipped by the radiator, towards the front of the car
4. Cut the plastic things holding the harness; there will be multiple ones
5. Completely unscrew the O2 sensors
6. Plug in the new sensors to the now-empty connectors that the old sensors were attached to
7. Dangle the sensor from the engine bay to the underbody of the car, taking care to do it SLOWLY so you don't damage the sensor
8. Put a little anti-seize on the threads of the sensors
9. Screw 'em in and you're done.
~THT
Necessary tools:
*3/8" drive ratchet
*16mm O2 sensor removal ratchet (rent it from Autozone for free)
*O2 sensor(s)
*Anti-seize
*Scissors
1. Put the front end of the car on ramps or jackstands
2. Using the O2 sensor ratchet attachment, loosen the current O2 sensors that are installed in the "Y" portion of the Y-pipe
3. Trace the sensor harness up to the engine bay and unplug it. One will be close to the cabin, to the left of the spark plugs; the other will be clipped by the radiator, towards the front of the car
4. Cut the plastic things holding the harness; there will be multiple ones
5. Completely unscrew the O2 sensors
6. Plug in the new sensors to the now-empty connectors that the old sensors were attached to
7. Dangle the sensor from the engine bay to the underbody of the car, taking care to do it SLOWLY so you don't damage the sensor
8. Put a little anti-seize on the threads of the sensors
9. Screw 'em in and you're done.
~THT
05-17-2004, 05:28 PM
#3
Exactly as THT says... just a few tips from my personal experience...
Sometimes the sensors are hard to get off - it helps to soak them for a few minuts with PB Blaster (or something like it) for a few minutes before trying to break them free. The bosch sensors I ordered came with anti-seize already applied to the threads and a protective plastic cap covering the actual sensor.. I left the plasic cap on right up until I was ready to screw the new sensors in...
Sometimes the sensors are hard to get off - it helps to soak them for a few minuts with PB Blaster (or something like it) for a few minutes before trying to break them free. The bosch sensors I ordered came with anti-seize already applied to the threads and a protective plastic cap covering the actual sensor.. I left the plasic cap on right up until I was ready to screw the new sensors in...
05-17-2004, 07:23 PM
#6
And if you get a CEL regarding the O2 sensors, they may not be busted but dirty. Take an old sock and some rubbing alcohol and clean the sensor portion and reinstall. My CEL came on because I got anti-seize on the sensor; cleaned it off, reset the ECU and it went away.
~THT
~THT
05-17-2004, 10:55 PM
#7
if the cel light comes on after the install just reset it again. it takes a few days for the ecu to realize there is a new sensor on there.
that happened to me after i replaced mine and the same day i got the same code i was confused but i took it to my friends auto repair shop and he said just reset the ecu again. it can be slow sometimes to see you got a new one.
that happened to me after i replaced mine and the same day i got the same code i was confused but i took it to my friends auto repair shop and he said just reset the ecu again. it can be slow sometimes to see you got a new one.
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