[Shotimes] Oxygen Sensor Question

[Paul Nimz]

FWIW with my weak injector I never got a code and the cylinder balance test 
always passed.  The car did not misfire it just ran lean on one cylinder 
based on the white plug.  This gave me the CEL that came and went while 
driving.  It would be interesting to have seen the fuel maps for the bank 
that cylinder was on.  My guess is the O2 was telling that bank to oscillate 
between rich and lean causing the fluctuating CEL but no permanent code.

Paul Nimz
'97 TR
'93 EG mtx


----- Original Message ----- 
From: "Kevin & Cheryl Airth" <clubairth@peoplepc.com>
To: <Barry@kingcon.com>
Cc: <shotimes@autox.team.net>
Sent: Monday, November 22, 2004 9:47 AM
Subject: Re: [Shotimes] Oxygen Sensor Question


> Barry:
> Clear all the codes first and see what comes back. The O2 code can be set
> by oil in the plug wells. Since the rear bank is harder to get to some
> service people ignore it! I have had repeated O2 sensor codes from oil in
> the plug wells.
> On the MTX changing the O2 sensors is not too bad.
> How old are the wires and plugs?
> .
>
>
>> So what are the symptoms of o2 sensor failure?
>> I am getting an intermittent CEI light. It comes on about 5 minutes
>> after startup, and will come & go  throughout the trip. I can make it go
>> away by pushing it a little hard out of a toll booth or passing lane but
>> it tends to return. AZ ran codes for me and got possible cam sensor,
>> canister purge sensor, and rear o2 sensor "indicated by a lean condition
>> on bank 2".  Cam sensor was changed 60k ago. I assume the o2 is factory
>> at 129k. Car runs well although the 120k has never been done. (and I
>> don't know about the 60k,that was before I owned it. Sucks to be broke).
>> The o2 seems the most reasonable guess, but what do you all think? Also,
>> how big a pita is the change (I do have the socket)? Any hints?
>>
>> thanks
>>
>> Barry Hayes
>> 95 mtx all original (means rusted solid).
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