Changing Oxygen Sensor before Catalytic Converter

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Feb 21, 2004 | 11:02 AM

Sabre1962

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From: Largo

Changing Oxygen Sensor before Catalytic Converter

Can somebody please give a suggestion as to how you remove the oxygen sensor on the exhaust manifold. I'm having a heck of a time trying to remove it.

Thank you,
John.

Feb 21, 2004 | 06:01 PM

Mickey's99F150

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breaker bar is the way...crank that bad boy. get a wrench and a tube with a diameter wider than the wrench, slip it over and theres your breaker bar...much more power

Feb 21, 2004 | 06:36 PM

grizz5675

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From: north minnesota

i would heat it up with a torch while applying even steady pressure if you torque to hard on it you could break the rim off the seating area or stip the seating area,that would be not good for o2 or you.

Feb 21, 2004 | 08:27 PM

50th ann

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From: Royal Palm Beach, Fl

There is a special socket that is inexpensive. If you have an Autozone They will rent you one for about $15.00 it's worth it there's nothing like the right tool. The exhaust pipe should be warm when you do the work. The metal expands a little to help loosen it up.

Feb 21, 2004 | 09:56 PM

Racerguy

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From: BC, Canada

Hi John and welcome to the forum

What size engine are you working on? Sensor on which side?
I find it easier to go in through the inner fender to change the sensors. With the truck jacked up and the wheel off it's not too bad.

Feb 22, 2004 | 01:17 PM

Sabre1962

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From: Largo

Thanks everybody,

I've got the tool from Autozone and I just can't seem to get the leverage I need. I haven't tried the torch and I haven't tried going
through the inner fender. I'll give that a go. Thanks very much for the insight.

John.

Feb 22, 2004 | 01:47 PM

jns

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I've used that "blaster" penetrating spray with good results.Spray it good and allow to soak in for a while.Hammer on the sensor's lower part a few times and start working her loose with the breaker bar or ratchet with a cheater bar for leverage.Good luck.