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O2 sensor loose

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Old Nov 21, 2011 | 12:12 PM
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Default O2 sensor loose
My o2 sensor keeps coming loose on my 97 4.6 v8 any ideas why and to stop it form happening again?
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Old Nov 21, 2011 | 12:17 PM
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A little bit of blue loctite will fix that issue.
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Old Nov 21, 2011 | 12:21 PM
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Yep...
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Old Nov 21, 2011 | 12:34 PM
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That's what I thought but then if it goes bad and I have to take it out then cuz of the heat it will be a pain in the *** to get out I was told I could peen the threads
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Old Nov 21, 2011 | 01:26 PM
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They have different grades of locktite
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Old Nov 21, 2011 | 01:58 PM
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Yup, just a tap with a punch on the "nut" part of the O2 peened against the welded bung on the exhaust will lock it in
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Old Nov 21, 2011 | 01:59 PM
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Originally Posted by A7X
Yup, just a tap with a punch on the "nut" part of the O2 peened against the welded bung on the exhaust will lock it in
I forgot to ask will I still be able to take it out and put a new one in if I needed to?
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Old Nov 21, 2011 | 02:05 PM
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Originally Posted by Tyler.172

I forgot to ask will I still be able to take it out and put a new one in if I needed to?
Yes, a lot easier than you would with cooked in lock tight... They put never seize on the replacements for a reason...

This method is used on pinion nuts, it will work on an O2 sensor
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Old Nov 21, 2011 | 02:12 PM
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Also used on steering wheels back in the day! Haha
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Old Nov 21, 2011 | 02:48 PM
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Sounds good if it loosens up again ill do that so it will be easy to put a new one in if i had to with the threads being peened?
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