I've had this problem and the only way to get it out was to remove the crossover pipe and get the thing on a bench, drill out as much as possible and then chase the threads. At least that part is easy - it's a spark plug thread. The problem is you get into a manifold gasket job because the main studs that hold the crossover pipe onto the cat and the manifolds invariably snap off. You *could* get it welded over and another bung welded in. Martin mike clemens 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 > > ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/