Removal Of Oxygen Sensor

[olibert]

Does somebody know a good trick to remove a frozen oxygen sensor ? I tried to unscrew the left front oxygene sensor on a 5.7L Vortex (Tahoe). I soaked it in Liquid Wrench for several days and warmed it up by keeping the engine running for 5 minutes. I used a breaker bar but the exhaust pipe connected to the exhaust manifold would rather bend than it would losen the sensor. I gave it also a try when it cooled down but with no success.

 

 

Thanks for a hint,

 

 

Oliver

[Jsdirt]

Propane torch it at the threads. After it's nice & hot, if you could touch it, it would come out by hand. The hotter the better.

[Slabi]

Heat up the pipe good by keeping the rpm's at about 2500 for 5 minutes (or carefully with the torch)...then spray the 02 sensor with a product by WURTH called ROST OFF ICE. Cooling the 02 while the pipe is hot should break it free.

[tanked_darren]

Propane torch it at the threads. After it's nice & hot, if you could touch it, it would come out by hand. The hotter the better.

 

Do not touch it with your hand after doing that!