In a message dated 1/14/00 11:46:04 AM Eastern Standard Time,
ScottH216@aol.com writes:
>
> In a message dated 1/14/2000 7:01:35 AM Pacific Standard Time,
> rclutter@bellsouth.net writes:
>
> >The code is 21, which means a problem with the o2 sensor. I noticed in the
> >Haynes manual that it says that this part should be replaced at 50k
miles,
> >well the truck just rolled over 50k and the light poped on, coincidence?
> >
> >Anyway, is this something thats releatively easy to replace? The book
says
> >it on the exhaust somewhere I havent looked yet, where is it?
> >
> >And, where can I buy one, will this be at the parts store? or a dealer
> item?
>
> Rob,
>
> What year is your truck? From what I've read on these boards, the '97 and
> later use two O2 sensors, one on either side of the cat. Mine is a '94, it
> only has one, and replacing it couldn't be any simpler. It's located on
the
> top of the exhaust pipe, just after the "Y" junction and in front of the
cat.
>
> It unplugs from the wiring harness on top of the trans, and then you
unscrew
>
> it from the pipe with a wrench. A decent one (I got a Bosch) comes with
> pre-lubricated threads, the wiring and plugin connector, and it set me
back
> about $65 from Kraegan Auto. I didn't even have to jack up the truck. At
> stock height, there was enough room to crawl underneath and change it in
> about 10 minutes.
>
> Hope this helps.
>
> Scott
> '94 318 - 15.24 @ 89
> <A HREF="http://members.aol.com/McKennaRacing/">McKennaRacing.com</A>
>
>
'96 models also have 2 O2 sensors.
Kelly in SC
'96 CC 5.2
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