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Mike, I did have something similar happen to me quite recently.  Those O2
sensors are just evil lilttle devices...

You're not gonna like this, but my solution was to remove the crossover
pipe, take it to an exhaust shop and have them weld in a new nut for the

I tried a thread chaser and a tap but niether worked.

BTW: I did not break a single stud removing my crossover pipe.  I did use a
LIBERAL amount of PB Blaster, but Rob Grady says I have a very unusual
DeLorean and I tend to believe him!


On 7/29/08, mike clemens <rmclemns@xxxxxxxxx> wrote:
>   While working under the engine of Josh's car, I noticed the ceramic was
> chipped on the sensor so I decided to go ahead and replace it, since it was
> one of those things that could have been affecting the 'hunting' idle.
> I put the wrench on it, twisted CCW, and much to my surprise it popped
> loose easily. PO must have used never-seize, but that's asking a bit much,
> since he never did anything correctly maintenace wise. After I get it out, I
> realize that he did not install a crush washer and the threaded part is
> still in the exhaust pipe. I had the sensor in my hand and only the
> outermost threaded part is left in the pipe. Has anyone had this happen and
> how did you get it out? I tried an easy out, but it just won't budge. I used
> PB Blaster, Corrosion X, heat, and a few choice cuss words, nothing is
> working.
> Mike TPS 1630

[Non-text portions of this message have been removed]


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