04-12-2011, 09:25 PM
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#11 (permalink)
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A True Z Fanatic
Join Date: Mar 2009
Location: Houston, TX
Posts: 4,024
Drives: too slow
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Quote:
Originally Posted by Vegitto-kun
I had to get one new sensor. one came off without a problem but the second one wouldn't budge. soaked. heated nothing helped. tom was scared that he would ruin the thread on the cat for when we need to put the exhaust system back to stock for the checkup.
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Back on my first header install, I also lost one sensor in the process. The second one we tried, we had much better success with though. I really think it came down to different techniques, rather than differences between the two. In both cases we tried WD-40 and applying heat with a torch (to the cat near the O2 hole, not to the sensor!  ). The torch helps, but a longer soak time on the WD (before heating) helps even more. Getting the cat locked down in a good vise, and setting up a wrench on the O2 so that you can get a little impact on it (hammer + wrench) helps as well.
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