Upstream O2 sensor replacement
#12
Join Date: Apr 2010
Location: Mentor, Ohio
Posts: 12,198
FYI - I have never warmed up a car to change an O2 sensor yet. There can be a first some day in the future.
I find many times the special O2 socket will not work for removing the old sensor as that sensor is in the exhaust so tight that the socket just opens at the slot. I usually have to take the wire cutters and clip the wire off, then I can use a good deep well socket. I may also need to use a breaker bar or sleeve my ratchet with a pipe and crack it loose.
When re-installing, I ALWAYS use the O2 socket (as to prevent damage to the wiring and it will get the sensor on and snug with no issues).
As mentioned, stick with ACDelco or Delphi.
I find many times the special O2 socket will not work for removing the old sensor as that sensor is in the exhaust so tight that the socket just opens at the slot. I usually have to take the wire cutters and clip the wire off, then I can use a good deep well socket. I may also need to use a breaker bar or sleeve my ratchet with a pipe and crack it loose.
When re-installing, I ALWAYS use the O2 socket (as to prevent damage to the wiring and it will get the sensor on and snug with no issues).
As mentioned, stick with ACDelco or Delphi.
#14
Sorry to hijack,
From you all experience, why no to Bosch?
I bought one, my impatience to wait for an acdelco brand let me to buy it.
I can't say I am happy with my decision as now I get a CEL on for a few days, goes away, comes back and so on. I am also thinking it may be my o2 extension may be toast or near it, after the header install I forgot to zip tie it and the casing melted a little. I don't know if I damaged the wiring.
I am curious as why you guys passed on Bosch. Word of mouth or personal experience.
From you all experience, why no to Bosch?
I bought one, my impatience to wait for an acdelco brand let me to buy it.
I can't say I am happy with my decision as now I get a CEL on for a few days, goes away, comes back and so on. I am also thinking it may be my o2 extension may be toast or near it, after the header install I forgot to zip tie it and the casing melted a little. I don't know if I damaged the wiring.
I am curious as why you guys passed on Bosch. Word of mouth or personal experience.
#15
take it from someone who works at autozone and sells bosch oxygen sensors. F-ING GARBAGE! Too many people come back with bad sensors weeks after installation or literally once the warranty expires. I've seen so many come back (and not just because it didn't turn the CEL off)
btw, to make your life easier. They have a free rental on the tool for the job. Lay $30 down & get it back in full after your done. Or buy the socket for $10 (its not too bad)
btw, to make your life easier. They have a free rental on the tool for the job. Lay $30 down & get it back in full after your done. Or buy the socket for $10 (its not too bad)
Last edited by Red Nightmare; 03-29-2013 at 11:18 PM.
#16
Join Date: Apr 2010
Location: Mentor, Ohio
Posts: 12,198
The problem is not necessarily that the BOSCH sensor is "bad". The issue is that these cars (like many modern cars) are getting a lot tighter on calibrations and tolerances of sensor reads. Our PCMs are not "calibrated" for the reads from a BOSCH sensor, as a result, even though it may not be a bad sensor, the PCM throws CEL because the readings it gets from the sensor are not matching up.
I've read a LOT of people have had these issues with BOSCH. I will admit, I have used BOSCH with no issues on the down stream sensor and in the upstream on mid-90's 3100s. But when I had to change my O2 upstream sensor on my Monte, I tried a Denso, that was a bad move, found out the preferred is AC Delco or Delphi from my readings. My Monte currently has a Delphi in the upstream bank and NO issues.
#18
Special sockets aren't terrible to buy. I like to do my own work on all the vehicles, so if a special tool is needed (that I know I'll use more than once) it is worth the purchase.