Remove O2 Sensor Help

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Aug 11, 2011 | 05:22 AM

redliner8

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From: PA

Remove O2 Sensor Help

I need to replace my O2 sensor but can't remove the old one. I bought a crow's foot O2 socket for it and sprayed it with PB Blaster and let it sit for about 10 minutes without any luck. I was thinking of putting a pipe on the end of my wrench to get more leverage. Will anything bad happen if I apply too much pressure to get it off? Any other recommendations? A shop said they will charge $40 to replace it for me, which isn't bad, but it seems so easy that I want to do it myself.

Last edited by redliner8; Aug 11, 2011 at 05:25 AM.

Aug 11, 2011 | 06:36 AM

Bon

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From: KC, MO

Leverage is the answer. Good luck!

Aug 11, 2011 | 07:28 AM

Poqman

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From: Poquoson, VA

In a worse case scenario, if the threads in the exhaust manifold pipes strip, then they have to be replaced. I had this problem on my Toyota Highlander and took it to the dealer. After a half day in the shop they called and said I had to replace the exhaust pipes. I said no, picked up the car and took it to another shop. They broke it loose in about 10 minutes. Good Luck!

Aug 11, 2011 | 08:36 AM

VVTiBob

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From: CA - San Diego

I'd only add some heat to the exhaust pipe to expand the fittings a little.

Aug 11, 2011 | 08:40 AM

mandyfig

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From: GA

Heat is an alternative to break bolts loose. Can exercise caution when using heat or open flame.

Aug 11, 2011 | 10:48 AM

redliner8

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Lexus Test Driver

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From: PA

Heating by running the engine for a few minutes, or by using a torch? (i dont have a torch, but maybe a butane lighter would work? lol)

Aug 11, 2011 | 11:49 AM

robertg

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Joined: Jun 2011

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From: Mb

I just went through this with the front drivers side oxygen sensor. I ended up stripping the hex, so I had to take the manifold off. By the time I drilled and chiseled out the old sensor, my threads were damaged. I had to weld in a new bung.

I tried heating it with a propane torch but looking back I think it needed more heat.

I gladly pay someone $40.00 to change one.