O2 Sensor

[ybk at dongames.net]

I have been searching in archives on O2 sensor and 2341 code. There are
several messages on the topic, this one seems pretty close so here we
go:

Driving very conservatively for the last several months it only now came
to my attention that I do not have a full power.  Only 1.4 at 3000 rpm
indicated with 2.5 bar sensor. It used to be 1.8 - 1.9.

First I disconnected wastegate frequency valve and got 1.1 which seems
to be normal for the stock wastegate spring. The check engine light is
not on but I connected my jumper wire and it blinked 2341 oxygen sensor
to me. There are no other negative signals from the car whatsoever. I
have probably been driving like this for a long time. The sensor is
about 4.5 years 35k miles old. Intercooler clamps and michelin man hose
have been replaced with the sensor. Spark plugs have been replaced 3
months ago - the change cut the idle HC emissions big time. Cap, rotor,
wires have only 2 years on them.

Should I just get the new O2 sensor since it seems kind of old (and I
did have an oil consumption initially before I changed valve stem seals)
or should I try to investigate some more by looking at memory blocks
and/or actual sensor voltage?


On Wed, 2004-08-18 at 13:19 -0400, Brett Dikeman wrote:
> At 8:58 AM -0700 8/18/04, Derek Pulvino wrote:
> >...and lastly, has anybody else seen an oxygen sensor code thrown on 
> >their cars?  According to the cheat sheet from SJM, the code 
> >indicates wiring, sensor, or heating element problems (I think it 
> >was 2322, so not exceedandce code).
> >
> >I'm guessing the oxygen sensor is about due for replacement (about 
> >3-years old), just wasn't aware that the Mototronic was set up to 
> >know/sense when the sensor is not working right.
> 
> If it doesn't get enough signal from the o2 sensor, then it has 
> failed(rare) or there is a wiring problem.  If the heater doesn't 
> work, that will cause the sensor to not work or take too long to 
> start working, thus Scott's/the Bentley's suggestions.
> 
> They last 50-60k miles, rarely outside that; oil and whatnot clogs 
> them up, and they become so slow to respond they're useless.
> 
> Brett