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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 12-31-2011, 06:49 PM   #1
ricks-ss
 
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o2 sensors

so who has installed headers and high flow cats and had to replace o2 sensors? i had one front and one rear strip out now i have to wait till monday to order new ones
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Old 12-31-2011, 07:05 PM   #2
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It's not unusual to "drop a thread" when removing O2 sensors. Those things are in a HOT spot.

Be sure to use anti-seize compound when you replace them.

Best removal technique for me is to use a heavy open end box wrench on the sensor (are they 15/16th?) and tap the far end of the wrench with a hammer. Never had a problem doing it this way.
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Old 12-31-2011, 07:30 PM   #3
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Quote:
Originally Posted by Ventmaster View Post
It's not unusual to "drop a thread" when removing O2 sensors. Those things are in a HOT spot.

Be sure to use anti-seize compound when you replace them.

Best removal technique for me is to use a heavy open end box wrench on the sensor (are they 15/16th?) and tap the far end of the wrench with a hammer. Never had a problem doing it this way.
I did the same technique and all of my O2 sensors came out fine
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Old 12-31-2011, 08:00 PM   #4
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A little penetrating oil will also help. heating up the bung with a torch is good too.
My went pretty smooth, nothing stripped.
Good luck.
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Old 12-31-2011, 09:49 PM   #5
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I had to buy one rear. Luckily, the nearest Chevy dealer had one.
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Old 12-31-2011, 10:26 PM   #6
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I had to buy 2 rear sensors. Both were a pain to remove. One of them was cross-threaded from the factory. The fronts came out with no problems.
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