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o2 sensor reading lean #433443 09/10/02 01:45 AM
Joined: Sep 2002 Posts: 50 Rochester,Ny Monroe county S s0loithz OP New CEG\'er
OP s0loithz New CEG\'er S Joined: Sep 2002 Posts: 50 Rochester,Ny Monroe county	Can anyone help me out i just had the 02 sensor replaced and on the way home tonight it came on. I checked the code and it says laen fuel mixture how can i fix this problem? Thanks ~Tom 1998.5 Contour 2.5 v6 atx power everything maroon

Re: o2 sensor reading lean #433444 09/13/02 04:57 PM
Joined: Jun 2000 Posts: 95 Fergus, Ontario, Canada D dellowm_dup1 CEG\'er
dellowm_dup1 CEG\'er D Joined: Jun 2000 Posts: 95 Fergus, Ontario, Canada	Try switching the O2 sensors from location to location, post cat or pre cat on each bank and see if the codes reappear and follow the O2 sensor changes. If they do new O2 sensor (or other one on bank) may not be working correctly or not connected properly etc. Which one(s) did you have changed. There are 4.

Re: o2 sensor reading lean #433445 09/13/02 07:44 PM
Joined: Sep 2002 Posts: 50 Rochester,Ny Monroe county S s0loithz OP New CEG\'er
OP s0loithz New CEG\'er S Joined: Sep 2002 Posts: 50 Rochester,Ny Monroe county	I was told that they changed all of them, oh well the guy i got the car from is going to take it back and have it looked at agian! 1998.5 Contour 2.5 v6 atx power everything maroon

Re: o2 sensor reading lean #433446 09/13/02 11:10 PM
Joined: Jan 2001 Posts: 122 Denver, CO G garrick_dup1 CEG\'er
garrick_dup1 CEG\'er G Joined: Jan 2001 Posts: 122 Denver, CO	Originally posted by dellowm: Try switching the O2 sensors from location to location, post cat or pre cat on each bank and see if the codes reappear... The pre- and post-cat O2 sensors in this case are different parts with different plugs. Not to mention accessing the upstream sensors (bank 1 in particular) is hardly a trivial exercise. What was the exact trouble code (P####)? Some primary causes of running lean would be an air intake leak downstream of the MAF sensor, inadequate fuel pressure, or faulty MAF or O2 sensor. Which of the four O2 sensors did you have changed? Why did the previous owner replace ALL FOUR sensors? Your post brings up many questions... //> //> //> //> //> Garrick 2006 Mazda6 Grand Sport wagon, silver, MTX I'll never forget you: Silver E0, #3895 of 6535, built 10/2/97

Re: o2 sensor reading lean #433447 09/16/02 07:28 PM
Joined: Jun 2000 Posts: 95 Fergus, Ontario, Canada D dellowm_dup1 CEG\'er
dellowm_dup1 CEG\'er D Joined: Jun 2000 Posts: 95 Fergus, Ontario, Canada	Originally posted by garrick: Originally posted by dellowm: Try switching the O2 sensors from location to location, post cat or pre cat on each bank and see if the codes reappear... The pre- and post-cat O2 sensors in this case are different parts with different plugs. Not to mention accessing the upstream sensors (bank 1 in particular) is hardly a trivial exercise. What was the exact trouble code (P####)? Some primary causes of running lean would be an air intake leak downstream of the MAF sensor, inadequate fuel pressure, or faulty MAF or O2 sensor. Which of the four O2 sensors did you have changed? Why did the previous owner replace ALL FOUR sensors? Your post brings up many questions... Its all in the interpretation. the intent was botom to bottom, top to top, no mixing of the top and bottoms.

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