Page 1 of 2 12 LastLast
Results 1 to 10 of 17

Thread: Oxygen sensor install tips

  1. #1
    Lifetime Member
    Join Date
    Jul 2012
    Posts
    289

    Default Oxygen sensor install tips

    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?
    14 GMC Sierra
    5.3L CC SB 4x4
    Basic tuning....

  2. #2
    Lifetime Member EagleMark's Avatar
    Join Date
    Dec 2010
    Posts
    466

    Default

    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...

  3. #3
    Lifetime Member
    Join Date
    Jul 2012
    Posts
    289

    Default Oxygen sensor install tips

    Quote Originally Posted by EagleMark View Post
    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?
    14 GMC Sierra
    5.3L CC SB 4x4
    Basic tuning....

  4. #4
    Lifetime Member EagleMark's Avatar
    Join Date
    Dec 2010
    Posts
    466

    Default

    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!

    Is it narrow band or wide band? Headers?

  5. #5
    Lifetime Member
    Join Date
    Jul 2012
    Posts
    289

    Default Oxygen sensor install tips

    Quote Originally Posted by EagleMark View Post
    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!

    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.
    14 GMC Sierra
    5.3L CC SB 4x4
    Basic tuning....

  6. #6
    Lifetime Member
    Join Date
    Mar 2006
    Posts
    4,935

    Default

    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.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  7. #7
    Lifetime Member
    Join Date
    Jul 2012
    Posts
    289

    Default Oxygen sensor install tips

    Quote Originally Posted by ScarabEpic22 View Post
    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.
    14 GMC Sierra
    5.3L CC SB 4x4
    Basic tuning....

  8. #8
    Lifetime Member EagleMark's Avatar
    Join Date
    Dec 2010
    Posts
    466

    Default

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

  9. #9
    Lifetime Member
    Join Date
    Jul 2012
    Posts
    289

    Default Oxygen sensor install tips

    Quote Originally Posted by EagleMark View Post
    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.
    14 GMC Sierra
    5.3L CC SB 4x4
    Basic tuning....

  10. #10
    Lifetime Member EagleMark's Avatar
    Join Date
    Dec 2010
    Posts
    466

    Default

    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.

Page 1 of 2 12 LastLast

Similar Threads

  1. Speaking of oxygen sensors....
    By Rich Z in forum Gen III V8 Specific
    Replies: 7
    Last Post: January 7th, 2013, 07:21 PM
  2. Is there a parameter that specifies the position of the Oxygen sensor? E38
    By Highlander in forum E37, E38 & E67 PFI ECM's
    Replies: 14
    Last Post: October 1st, 2012, 09:50 AM
  3. Disabling post CAT oxygen sensor DTC? Possible?
    By andyfanshawe in forum Vortec V6/V8 Specific
    Replies: 2
    Last Post: April 29th, 2008, 02:33 AM
  4. Separate IAT sensor install
    By mtnman in forum General (Petrol, Gas, Ethanol)
    Replies: 0
    Last Post: November 18th, 2005, 02:47 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •