o2 Sensor change on recently purchased modded
Thread Starter
Teching In
Joined: Sep 2013
Posts: 6
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o2 Sensor change on recently purchased modded Hello all,
I read thru the forum a good bit on this as obviously this is a topic talked about plenty.
I've got a 2000 ws6, LT / TD.
Rear o2 deleted.
Front o2 were moved to rear location. Cant tell if previous owner loctite a plug into the front locations or if just seized in there. but I didnt see a need to change.
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Story:
I had a P0151 code come up other day on a long trip one weekend, started raining and then CES light popped on, car started running rough.
Car set overnight, next morning had code ran, drove it home...light went off. Few days later, came back on.
bought AC Delco AFS123 to find out o2 was in rear spot. So i read up on it a little and then bought Denso 234-4025. Put it in and reset light. 3 weeks later, light is back on. Same code.
Should i just order two more and replace them both, I pulled out old one and guy had in Bosch sensors (which ive read are crap)
Just wondering if i should check elsewhere or just go with new plugs. This time im just gonna replace them both, but i`ll prob make note of which bosch sensors were in there before ...because if they worked, well....send it
I read thru the forum a good bit on this as obviously this is a topic talked about plenty.
I've got a 2000 ws6, LT / TD.
Rear o2 deleted.
Front o2 were moved to rear location. Cant tell if previous owner loctite a plug into the front locations or if just seized in there. but I didnt see a need to change.
---
Story:
I had a P0151 code come up other day on a long trip one weekend, started raining and then CES light popped on, car started running rough.
Car set overnight, next morning had code ran, drove it home...light went off. Few days later, came back on.
bought AC Delco AFS123 to find out o2 was in rear spot. So i read up on it a little and then bought Denso 234-4025. Put it in and reset light. 3 weeks later, light is back on. Same code.
Should i just order two more and replace them both, I pulled out old one and guy had in Bosch sensors (which ive read are crap)
Just wondering if i should check elsewhere or just go with new plugs. This time im just gonna replace them both, but i`ll prob make note of which bosch sensors were in there before ...because if they worked, well....send it
The pre-cat o2 sensors should be put back towards the front bung holes and not where the post-cat o2 location is because the exhaust gases are cooling down already and may not be providing adequate AFR readings.
Thread Starter
Teching In
Joined: Sep 2013
Posts: 6
Likes: 0
Replaced passenger o2 twice now.
I erase code and it immediately comes back.
I did notice I have o2 sensor extenders.
I may try to change the extenders to the opposite sides to see if issue follows.
Not sure where to go beyond this. Its only the P0151 error code, never anything more.
I erase code and it immediately comes back.
I did notice I have o2 sensor extenders.
I may try to change the extenders to the opposite sides to see if issue follows.
Not sure where to go beyond this. Its only the P0151 error code, never anything more.
