O2 sensor installation

[CJF]

Stupid question, but: When installing, do I use any form-in-place gasket, or just the metal gasket?

 

[landtank]

just the supplied gasket

 

[CJF]

 

[petegangies]

are you re-using the existing gasket or installing a new one? If new one, no form-a gasket needed.

 

[CJF]

are you re-using the existing gasket or installing a new one? If new one, no form-a gasket needed.

Existing O2 sensor, new gasket.

 

[petegangies]

Existing O2 sensor, new gasket.

Then you're good to go as is. Nothing else required.

 

[Rifleman]

I'd suggest putting a little dab of copper antiseize on the O2 sensor threads if the new sensors didn't already come with it applied. Using antiseize on the threads will make removal of the sensors later on alot easier. But just a word of caution, make sure the antiseize doesn't get on the tip of the sensor that's sticks into the exhaust stream.

 

[CJF]

I'd suggest putting a little dab of copper antiseize on the O2 sensor threads if the new sensors didn't already come with it applied. Using antiseize on the threads will make removal of the sensors later on alot easier. But just a word of caution, make sure the antiseize doesn't get on the tip of the sensor that's sticks into the exhaust stream.

Related: The reason I'm replacing the gasket is because the nuts backed all the way off on their own somehow, to where they weren't even on the studs anymore. The sensor was still on the studs but just flopping around, and the exhaust leak ate up the whole gasket. Anyone else ever have that happen?

 

[Malleus]

I'd suggest putting a little dab of copper antiseize on the O2 sensor threads if the new sensors didn't already come with it applied. Using antiseize on the threads will make removal of the sensors later on alot easier. But just a word of caution, make sure the antiseize doesn't get on the tip of the sensor that's sticks into the exhaust stream.

This is the correct use for anti–seize. It was designed for bolted connections on boilers. Repeated heat and cool cycles suck water into the threads and seize them together. Anti–seize is heat–proof wateproofing.