Re: Oxygen sensors

["Daegrigg (Don)" <daegrigg@domain.elided>]

Too which plug are you referring?  The one that connects the O2 wires to the
female plug in the differential area or the actual plug at the sensor.  How
many wires does the sensor have?  Is it the same as the sensor you replaced?
Seems like the mechanic should make good on the repair/replacement.

Don

----- Original Message -----
From: <Alfisto@domain.elided>
To: <alfa@domain.elided>
Sent: Thursday, October 31, 2002 1:54 PM
Subject: Oxygen sensors


> Two weeks ago I had my O2 sensor changed (94 164LS -99K miles -still good
but
> security as changed exhaust system). The mechanic who installed it said
two
> wires came out of the plug when installing the new sensor and he might
have
> replaced them wrongly as subsequently the "check engine light" came on
plus a
> 1-2-2-3 code (lambda probe dilution). He said that he then changed the two
> wires but the light remained which it still does, fluctuating on and off.
I
> then had the CO checked and it was high indicating a rich mixture which
was
> borne out by my bad gas mileage from the last tankful. This presupposes
that
> the initial wrong wiring created a short which blew out the O2 sensor
heater.
> Can this happen, and if so then the mech would be responsible for
replacing
> the sensor ? Another mech. told me that he has never seen an O2 sensor go
> even in cars with 300K miles on them (he works primarily on Volvos) and he
> thinks putting the wires back to original position might cure the problem.
> Other question is with an engine running rich , how long before the cat.
> converter might be damaged? I have put about 300 miles on it in that
> condition and have just had mixture leaned out until a new sensor is put
in
> next week.
> Graham Arlen
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