O2 sensor controversy again
The question of whether an O2 sensor can be bad enough to cause drivability
or fuel economy problems without triggering OBDII codes has another data point. In the alt.autos.subaru forum somebody asked for help sorting out very troublesome hesitation after slowing in a 2006 Outback. A respondent had the same problem in his car, and pressured the dealer to do *something*! The dealer replaced the O2 sensor (front one, I presume) in spite of lack of diagnostic codes and the symptom disappeared. Mike |
Re: O2 sensor controversy again
Michael Pardee wrote:
> The question of whether an O2 sensor can be bad enough to cause drivability > or fuel economy problems without triggering OBDII codes has another data > point. > > In the alt.autos.subaru forum somebody asked for help sorting out very > troublesome hesitation after slowing in a 2006 Outback. A respondent had the > same problem in his car, and pressured the dealer to do *something*! The > dealer replaced the O2 sensor (front one, I presume) in spite of lack of > diagnostic codes and the symptom disappeared. > > Mike > > my experience is yes, it can definitely scratch that itch. with cheapo aftermarket sensors, my '89, which has a slight tendency to hesitiation anyway, is /way/ worse. no codes. but when i use a new oem sensor, that problem all but disappears. |
Re: O2 sensor controversy again
Michael Pardee wrote:
> The question of whether an O2 sensor can be bad enough to cause drivability > or fuel economy problems without triggering OBDII codes has another data > point. > > In the alt.autos.subaru forum somebody asked for help sorting out very > troublesome hesitation after slowing in a 2006 Outback. A respondent had the > same problem in his car, and pressured the dealer to do *something*! The > dealer replaced the O2 sensor (front one, I presume) in spite of lack of > diagnostic codes and the symptom disappeared. > > Mike > > my experience is yes, it can definitely scratch that itch. with cheapo aftermarket sensors, my '89, which has a slight tendency to hesitiation anyway, is /way/ worse. no codes. but when i use a new oem sensor, that problem all but disappears. |
Re: O2 sensor controversy again
Michael Pardee wrote:
> The question of whether an O2 sensor can be bad enough to cause drivability > or fuel economy problems without triggering OBDII codes has another data > point. > > In the alt.autos.subaru forum somebody asked for help sorting out very > troublesome hesitation after slowing in a 2006 Outback. A respondent had the > same problem in his car, and pressured the dealer to do *something*! The > dealer replaced the O2 sensor (front one, I presume) in spite of lack of > diagnostic codes and the symptom disappeared. > > Mike > > my experience is yes, it can definitely scratch that itch. with cheapo aftermarket sensors, my '89, which has a slight tendency to hesitiation anyway, is /way/ worse. no codes. but when i use a new oem sensor, that problem all but disappears. |
Re: O2 sensor controversy again
Am 89 is not OBDII compliant and does not monitor the sensors that close and
the sensors are totally different. The OBDII system monitors heater current and voltage and switching times and voltage to very precisely determine what they are doing. The chance of them causing a problem without setting a code is extremely slim. They can be setting sub codes long before turning on the light on the dash. The information in the computer should be thoroughly analyzed as swapping parts is expensive and could just be masking the real problem. "jim beam" <nospam@example.net> wrote in message news:-tSdnUzA2tZufdbZnZ2dnUVZ_tKdnZ2d@speakeasy.net... > Michael Pardee wrote: >> The question of whether an O2 sensor can be bad enough to cause >> drivability or fuel economy problems without triggering OBDII codes has >> another data point. >> >> In the alt.autos.subaru forum somebody asked for help sorting out very >> troublesome hesitation after slowing in a 2006 Outback. A respondent had >> the same problem in his car, and pressured the dealer to do *something*! >> The dealer replaced the O2 sensor (front one, I presume) in spite of lack >> of diagnostic codes and the symptom disappeared. >> >> Mike > my experience is yes, it can definitely scratch that itch. with cheapo > aftermarket sensors, my '89, which has a slight tendency to hesitiation > anyway, is /way/ worse. no codes. but when i use a new oem sensor, that > problem all but disappears. |
Re: O2 sensor controversy again
Am 89 is not OBDII compliant and does not monitor the sensors that close and
the sensors are totally different. The OBDII system monitors heater current and voltage and switching times and voltage to very precisely determine what they are doing. The chance of them causing a problem without setting a code is extremely slim. They can be setting sub codes long before turning on the light on the dash. The information in the computer should be thoroughly analyzed as swapping parts is expensive and could just be masking the real problem. "jim beam" <nospam@example.net> wrote in message news:-tSdnUzA2tZufdbZnZ2dnUVZ_tKdnZ2d@speakeasy.net... > Michael Pardee wrote: >> The question of whether an O2 sensor can be bad enough to cause >> drivability or fuel economy problems without triggering OBDII codes has >> another data point. >> >> In the alt.autos.subaru forum somebody asked for help sorting out very >> troublesome hesitation after slowing in a 2006 Outback. A respondent had >> the same problem in his car, and pressured the dealer to do *something*! >> The dealer replaced the O2 sensor (front one, I presume) in spite of lack >> of diagnostic codes and the symptom disappeared. >> >> Mike > my experience is yes, it can definitely scratch that itch. with cheapo > aftermarket sensors, my '89, which has a slight tendency to hesitiation > anyway, is /way/ worse. no codes. but when i use a new oem sensor, that > problem all but disappears. |
Re: O2 sensor controversy again
Am 89 is not OBDII compliant and does not monitor the sensors that close and
the sensors are totally different. The OBDII system monitors heater current and voltage and switching times and voltage to very precisely determine what they are doing. The chance of them causing a problem without setting a code is extremely slim. They can be setting sub codes long before turning on the light on the dash. The information in the computer should be thoroughly analyzed as swapping parts is expensive and could just be masking the real problem. "jim beam" <nospam@example.net> wrote in message news:-tSdnUzA2tZufdbZnZ2dnUVZ_tKdnZ2d@speakeasy.net... > Michael Pardee wrote: >> The question of whether an O2 sensor can be bad enough to cause >> drivability or fuel economy problems without triggering OBDII codes has >> another data point. >> >> In the alt.autos.subaru forum somebody asked for help sorting out very >> troublesome hesitation after slowing in a 2006 Outback. A respondent had >> the same problem in his car, and pressured the dealer to do *something*! >> The dealer replaced the O2 sensor (front one, I presume) in spite of lack >> of diagnostic codes and the symptom disappeared. >> >> Mike > my experience is yes, it can definitely scratch that itch. with cheapo > aftermarket sensors, my '89, which has a slight tendency to hesitiation > anyway, is /way/ worse. no codes. but when i use a new oem sensor, that > problem all but disappears. |
Re: O2 sensor controversy again
"Woody" <TheDuck@pond.net> wrote in message
news:8s33g.69065$H71.136@newssvr13.news.prodigy.co m... > Am 89 is not OBDII compliant and does not monitor the sensors that close > and the sensors are totally different. The OBDII system monitors heater > current and voltage and switching times and voltage to very precisely > determine what they are doing. The chance of them causing a problem > without setting a code is extremely slim. They can be setting sub codes > long before turning on the light on the dash. The information in the > computer should be thoroughly analyzed as swapping parts is expensive and > could just be masking the real problem. > > I would have thought OBDII would catch O2 weakness, too, but as the Subaru experience illustrates it isn't necessarily so. I am puzzled what sort of out-of-the-box defect the sensor would have that would cause it to behave so badly and not be tattled on, though. Mike |
Re: O2 sensor controversy again
"Woody" <TheDuck@pond.net> wrote in message
news:8s33g.69065$H71.136@newssvr13.news.prodigy.co m... > Am 89 is not OBDII compliant and does not monitor the sensors that close > and the sensors are totally different. The OBDII system monitors heater > current and voltage and switching times and voltage to very precisely > determine what they are doing. The chance of them causing a problem > without setting a code is extremely slim. They can be setting sub codes > long before turning on the light on the dash. The information in the > computer should be thoroughly analyzed as swapping parts is expensive and > could just be masking the real problem. > > I would have thought OBDII would catch O2 weakness, too, but as the Subaru experience illustrates it isn't necessarily so. I am puzzled what sort of out-of-the-box defect the sensor would have that would cause it to behave so badly and not be tattled on, though. Mike |
Re: O2 sensor controversy again
"Woody" <TheDuck@pond.net> wrote in message
news:8s33g.69065$H71.136@newssvr13.news.prodigy.co m... > Am 89 is not OBDII compliant and does not monitor the sensors that close > and the sensors are totally different. The OBDII system monitors heater > current and voltage and switching times and voltage to very precisely > determine what they are doing. The chance of them causing a problem > without setting a code is extremely slim. They can be setting sub codes > long before turning on the light on the dash. The information in the > computer should be thoroughly analyzed as swapping parts is expensive and > could just be masking the real problem. > > I would have thought OBDII would catch O2 weakness, too, but as the Subaru experience illustrates it isn't necessarily so. I am puzzled what sort of out-of-the-box defect the sensor would have that would cause it to behave so badly and not be tattled on, though. Mike |
Re: O2 sensor controversy again
Michael Pardee wrote:
> > "Woody" <TheDuck@pond.net> wrote in message > news:8s33g.69065$H71.136@newssvr13.news.prodigy.co m... > > Am 89 is not OBDII compliant and does not monitor the sensors that close > > and the sensors are totally different. The OBDII system monitors heater > > current and voltage and switching times and voltage to very precisely > > determine what they are doing. The chance of them causing a problem > > without setting a code is extremely slim. They can be setting sub codes > > long before turning on the light on the dash. The information in the > > computer should be thoroughly analyzed as swapping parts is expensive and > > could just be masking the real problem. > > > > > I would have thought OBDII would catch O2 weakness, too, but as the Subaru > experience illustrates it isn't necessarily so. I am puzzled what sort of > out-of-the-box defect the sensor would have that would cause it to behave so > badly and not be tattled on, though. > > Mike -------------------------------------- Maybe the out-of-the-box defect was caused by the BOX ITSELF (like it had the word BOSCH on it)? I keep hearing horror stories about BOSCH, and having owned Volvo and VW, I believe it. :-( 'Curly' -- If there are a couple of _underscores_ hidden in my return address, you'll have to remove them to reply . . . . Thanks. |
Re: O2 sensor controversy again
Michael Pardee wrote:
> > "Woody" <TheDuck@pond.net> wrote in message > news:8s33g.69065$H71.136@newssvr13.news.prodigy.co m... > > Am 89 is not OBDII compliant and does not monitor the sensors that close > > and the sensors are totally different. The OBDII system monitors heater > > current and voltage and switching times and voltage to very precisely > > determine what they are doing. The chance of them causing a problem > > without setting a code is extremely slim. They can be setting sub codes > > long before turning on the light on the dash. The information in the > > computer should be thoroughly analyzed as swapping parts is expensive and > > could just be masking the real problem. > > > > > I would have thought OBDII would catch O2 weakness, too, but as the Subaru > experience illustrates it isn't necessarily so. I am puzzled what sort of > out-of-the-box defect the sensor would have that would cause it to behave so > badly and not be tattled on, though. > > Mike -------------------------------------- Maybe the out-of-the-box defect was caused by the BOX ITSELF (like it had the word BOSCH on it)? I keep hearing horror stories about BOSCH, and having owned Volvo and VW, I believe it. :-( 'Curly' -- If there are a couple of _underscores_ hidden in my return address, you'll have to remove them to reply . . . . Thanks. |
Re: O2 sensor controversy again
Michael Pardee wrote:
> > "Woody" <TheDuck@pond.net> wrote in message > news:8s33g.69065$H71.136@newssvr13.news.prodigy.co m... > > Am 89 is not OBDII compliant and does not monitor the sensors that close > > and the sensors are totally different. The OBDII system monitors heater > > current and voltage and switching times and voltage to very precisely > > determine what they are doing. The chance of them causing a problem > > without setting a code is extremely slim. They can be setting sub codes > > long before turning on the light on the dash. The information in the > > computer should be thoroughly analyzed as swapping parts is expensive and > > could just be masking the real problem. > > > > > I would have thought OBDII would catch O2 weakness, too, but as the Subaru > experience illustrates it isn't necessarily so. I am puzzled what sort of > out-of-the-box defect the sensor would have that would cause it to behave so > badly and not be tattled on, though. > > Mike -------------------------------------- Maybe the out-of-the-box defect was caused by the BOX ITSELF (like it had the word BOSCH on it)? I keep hearing horror stories about BOSCH, and having owned Volvo and VW, I believe it. :-( 'Curly' -- If there are a couple of _underscores_ hidden in my return address, you'll have to remove them to reply . . . . Thanks. |
Re: O2 sensor controversy again
Michael Pardee wrote:
> I would have thought OBDII would catch O2 weakness, too, but as the Subaru > experience illustrates it isn't necessarily so. I am puzzled what sort of > out-of-the-box defect the sensor would have that would cause it to behave so > badly and not be tattled on, though. > > Mike =============================== :-) Maybe the out-of-the-box defect was caused by the BOX ITSELF (like it had the word BOSCH on it)? I keep hearing horror stories about BOSCH, and having owned Volvo and VW, I believe it. :-( 'Curly' |
Re: O2 sensor controversy again
Michael Pardee wrote:
> I would have thought OBDII would catch O2 weakness, too, but as the Subaru > experience illustrates it isn't necessarily so. I am puzzled what sort of > out-of-the-box defect the sensor would have that would cause it to behave so > badly and not be tattled on, though. > > Mike =============================== :-) Maybe the out-of-the-box defect was caused by the BOX ITSELF (like it had the word BOSCH on it)? I keep hearing horror stories about BOSCH, and having owned Volvo and VW, I believe it. :-( 'Curly' |
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