Oxygen sensor install tips

[Wheelz]

Long story short, I don't trust any of the local shops to put on my bung for the O2 sensor. All I get is arguments saying they have to put it on the bottom of the pipe cause their isnt room on the high side. When I bought it I remember reading you had to install it so water couldn't condensate and pool in the bung. So I'm going to borrow my folks mig welder and just do it myself next time I'm home. Anyone have any tips or things to watch out for?

[EagleMark]

Sounds like you have the right idea and the shops are lazy and don't care?

Between 10 o-clock and 2 o-clock.

If you watch Trucks on Power Block they just did one wrong on an engine swap! hanging down...

[Wheelz]

Sounds like you have the right idea and the shops are lazy and don't care?

Between 10 o-clock and 2 o-clock.

If you watch Trucks on Power Block they just did one wrong on an engine swap! hanging down...

Pretty much. I tried explaining it has to drain and got its just not possible.

And thanks.

Any other gotchas I might run into?

[EagleMark]

Not so much it has to drain but do not want it drained into!

Just make sure there is room for sensor install where you mount the bung. Good bead around the bung = no leaks.

Step drill is real handy here and save room/length.

The good bungs have a round recess that slips in the hole you drill and easier to weld. If no recess then make sure it's centered so the O2 does not hit/drag on exhaust pipe when installed.

No rocket scenice or math equations for PIDS needed! :laugh:

Is it narrow band or wide band? Headers?

[Wheelz]

Not so much it has to drain but do not want it drained into!

Just make sure there is room for sensor install where you mount the bung. Good bead around the bung = no leaks.

Step drill is real handy here and save room/length.

The good bungs have a round recess that slips in the hole you drill and easier to weld. If no recess then make sure it's centered so the O2 does not hit/drag on exhaust pipe when installed.

No rocket scenice or math equations for PIDS needed! :laugh:

Is it narrow band or wide band? Headers?

Thanks. Never thought about the step bit. And this doesn't have a recess so ill have to be careful.

And maybe no rocket science but it will require a good bit of patience as me and tight spaces can get interesting!

Wideband LC-1 and completely stock truck minus the tuning I've done.

[ScarabEpic22]

If you can, drop the y-pipe. Makes it a lot easier to weld a bung in correctly when it's out of the truck. If that's not possible, then you'll have to get creative in your mounting position. But, 10-2 is the preferred position like EagleMark said.

[Wheelz]

If you can, drop the y-pipe. Makes it a lot easier to weld a bung in correctly when it's out of the truck. If that's not possible, then you'll have to get creative in your mounting position. But, 10-2 is the preferred position like EagleMark said.

It may be possible. I should be able to heat up the bolts with their torch. I'm sure gonna try that first. Sure seems like it could be easy to get that thin walled pipe messed up though.

[EagleMark]

It's a WB, is there room farther back?

[Wheelz]

It's a WB, is there room farther back?

I thought it had to be installed before the cat as close to the manifold as possible. Which gives me about a foot of pipe to work with.

[EagleMark]

Yes before CAT but no not as close to manifolds as possible! Anywhere before cat. Your cat must be close, I see the space issue now.

[Wheelz]

Yes before CAT but no not as close to manifolds as possible! Anywhere before cat. Your cat must be close, I see the space issue now.

True, not right on the joint! I worded that poorly

[joecar]

If you're welding onto a stainless pipe use stainless mig wire.

[Wheelz]

Good point. Thanks

[playtoy_18]

Get a junk 02 sensor and after tacking the bung in,install it while running the bead.
That is what my exhaust guy does,he said sometimes the bung will warp while welding it.

[IJ.]

Get a junk 02 sensor and after tacking the bung in,install it while running the bead.
That is what my exhaust guy does,he said sometimes the bung will warp while welding it.

I have some blanks I use for this, from memory M18x1.5, your exhaust guys knows his stuff.

[Boost]

Great info here! Any additional considerations for a turbo vehicle?

[rcmn0022]

When dealing with a turbo, you need to make sure that it is after the turbo. And ideally before the catalytic convertor. Also when dealing with turbos, you need to start what that the exhaust gas temperatures don't get too hot for the wideband sensor.