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o2 sensor seized to exhaust manifold... #1849991
04/08/10 07:35 PM
04/08/10 07:35 PM
Joined: Feb 2008
Posts: 586
ca
calvinnnnnnnnn Offline OP
calvinnnnnnnnn  Offline OP
Joined: Feb 2008
Posts: 586
ca
any suggestions how prevent it from stripping the threads?


Valvoline Synpower all day every day
Re: o2 sensor seized to exhaust manifold... [Re: calvinnnnnnnnn] #1849999
04/08/10 07:37 PM
04/08/10 07:37 PM
Joined: Sep 2004
Posts: 21,634
Orlando, FL
Mr Nice Offline
Mr Nice  Offline
Joined: Sep 2004
Posts: 21,634
Orlando, FL
start the car and let it run for approx 2-3 minutes, the manifold will warm up and you can easily remove the O2 sensor.

Re: o2 sensor seized to exhaust manifold... [Re: Mr Nice] #1850025
04/08/10 07:51 PM
04/08/10 07:51 PM
Joined: Jan 2008
Posts: 4,986
Milwaukee, WI
bepperb Offline
bepperb  Offline
Joined: Jan 2008
Posts: 4,986
Milwaukee, WI
I'd replace easily with hopefully... but that's a decent plan. I'd also get some PB blaster and the right socket for the job, which many auto parts stores will lend you.


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Re: o2 sensor seized to exhaust manifold... [Re: bepperb] #1850281
04/08/10 10:44 PM
04/08/10 10:44 PM
Joined: Feb 2008
Posts: 586
ca
calvinnnnnnnnn Offline OP
calvinnnnnnnnn  Offline OP
Joined: Feb 2008
Posts: 586
ca
the car was immediately worked on after driven 10 miles in the city, still seized


Valvoline Synpower all day every day
Re: o2 sensor seized to exhaust manifold... [Re: calvinnnnnnnnn] #1850386
04/09/10 01:49 AM
04/09/10 01:49 AM
Joined: Sep 2009
Posts: 998
Houston, TX
Stu_Rock Offline
Stu_Rock  Offline
Joined: Sep 2009
Posts: 998
Houston, TX
I've never seen stripped threads on an O2 sensor bung. They're usually really hard metal.

Is this sensor easy to access? On the toughest one I ever faced, I knocked the sensor body off with a hammer and used a 22mm socket with a 4 ft breaker bar. That worked nicely.

If, on the other hand, the sensor is hard to reach and requires a u-joint or a crowfoot, you might be in for a lot more work.

If this is a car that you think you will keep long enough to do this job again, get an M18-1.5 tap to clean out the threads before installing the new one. Don't forget the anti-seize if the new sensor doesn't already have it.

Re: o2 sensor seized to exhaust manifold... [Re: Stu_Rock] #1851320
04/09/10 06:36 PM
04/09/10 06:36 PM
Joined: Nov 2006
Posts: 19,921
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,921
MA, Mittelfranken.de
This tool will get it out with no problems.
I have used this to get some real 10 yr old bears out.

http://www.tooltopia.com/lisle-43900.aspx


ASE L1, Master. Deutsch Meisterbrief.
Re: o2 sensor seized to exhaust manifold... [Re: calvinnnnnnnnn] #1900072
05/22/10 10:39 PM
05/22/10 10:39 PM
Joined: Aug 2005
Posts: 7,130
Leamington, ON, Canada ..... r...
Papa Bear Offline
Papa Bear  Offline
Joined: Aug 2005
Posts: 7,130
Leamington, ON, Canada ..... r...
Originally Posted By: calvinnnnnnnnn
the car was immediately worked on after driven 10 miles in the city, still seized


Get a bigger wrench ..... shrug


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Re: o2 sensor seized to exhaust manifold... [Re: Papa Bear] #1941264
07/02/10 11:10 PM
07/02/10 11:10 PM
Joined: Sep 2006
Posts: 100
ypsilanti michigan
novaracer69 Offline
novaracer69  Offline
Joined: Sep 2006
Posts: 100
ypsilanti michigan
IR impact 1/2" works great

Re: o2 sensor seized to exhaust manifold... [Re: novaracer69] #1941265
07/02/10 11:11 PM
07/02/10 11:11 PM
Joined: Sep 2006
Posts: 100
ypsilanti michigan
novaracer69 Offline
novaracer69  Offline
Joined: Sep 2006
Posts: 100
ypsilanti michigan
oh and if you are replacing it remove the wires from it brfore you hit it with the impact ouch!

Re: o2 sensor seized to exhaust manifold... [Re: calvinnnnnnnnn] #1978451
08/07/10 04:44 AM
08/07/10 04:44 AM
Joined: May 2005
Posts: 764
USA
97prizm Offline
97prizm  Offline
Joined: May 2005
Posts: 764
USA

I had this same problem when it came to removing a friend of mines O2 sensor on his jeep grand Cherokee. I sprayed CRC Freeze Off which really helped then "cheated" by using a second wrench to give me more leverage on the first. http://www.autobarn.net/freeze-off-super-penetrant.html


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