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Old 12-17-2005, 03:31 PM   #1
Deus ex Machina
Scooby Newbie
 
Member#: 79815
Join Date: Jan 2005
Chapter/Region: MWSOC
Location: SE WI
Vehicle:
06 Mazda 6S

Default My car just threw a PO136...

PO136- Rear O2 sensor circuit faliure.

My car is catless.
I have a 50/50 BOV/Reciculation valve. Could the slight running rich between shifts "damage" the O2 sensor over time?
Another theory; at first I tried to do the resistor fix to the rear sensor, but ended up using the mechanical fix instead. So the harness was hacked up hardcore and then put back together. This was a good 10k miles ago, and it worked just fine until now..

So should I go buy a new rear sensor and leave it at that, or try to take it out and repatch the wires? There is a lot of salt and snow around here and I figure the combination of the two got to my craptacular patch job


Off Topic: Would it be OK to switch from mobil 1 synthetic to the mobil 1 5000 mile version for this one oil change? I'll probably switch back to synthetic before autocross season, but I have a really cheap crate of the regular stuff sitting here.

Thanks!

Alex
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Old 12-19-2005, 01:29 AM   #2
Deus ex Machina
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Member#: 79815
Join Date: Jan 2005
Chapter/Region: MWSOC
Location: SE WI
Vehicle:
06 Mazda 6S

Default

bump.

It turned off for part of today and came back on at night. Oh well
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Old 12-19-2005, 07:53 AM   #3
DrD
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Member#: 22412
Join Date: Aug 2002
Chapter/Region: SWIC
Location: Albuquerque, NM
Vehicle:
2012 Legacy 2.5GT
Ice Silver Metallic

Default

for the sensor, I would get under there and take a look.

for the oil, you should be fine - however, since M-1 only costs around $5 a qt, you really aren't saving a whole lot of $ by switching temporarily...
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