Oxygen sensor problem

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Eric - 17 Oct 2007 21:32 GMT

I tried to replace the oxygen sensor from the front exhaust manifold of my
2000 RX300 with 120k miles. It was very difficult removing the sensor from
the manifold and the threads stripped. Any advice for installing the new
sensor? Is there an inexpensive fix or do I have to replace the manifold?
Thanks.

Eric

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Anonymous - 19 Oct 2007 05:47 GMT

You have a few options, but I'm most confused as to
why the unit was stripped? Usually, a stripped thread
is damaged at the last use. The damage is discovered
with the removal. Are you saying this thread was dam-
aged at the factory, or was the sensor replaced since?

You can use a repair helicoil.
http://www.google.com/search?hl=en&q=%2B%22helicoil%22

You can tap the manifold for repair.
http://64.233.167.104/search?q=cache:eCFKIx6s97IJ:www.virginiawind.com/tips/stri
pped_threads.asp+%2B%22stripped+threads%22&hl=en&ct=clnk&cd=1&gl=us

You can use a Timesert repair process.
http://64.233.167.104/search?q=cache:Ni6QRkrQrO0J:www.timesert.com/+%2B%22stripp
ed+threads%22&hl=en&ct=clnk&cd=4&gl=us

However IMO, none of the process(es) are for the
inexperienced.

>I tried to replace the oxygen sensor from the front exhaust manifold of my
>2000 RX300 with 120k miles. It was very difficult removing the sensor from
[quoted text clipped - 3 lines]
>
> Eric

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