# my o2 sensor fell off. what does that mean?

**URL:** <https://forums.speedlife.net/t/my-o2-sensor-fell-off-what-does-that-mean/56747>\
**Category:** NYSpeed Automotive\
**Created:** [October 20, 2008, 7:22am UTC](https://forums.speedlife.net/t/my-o2-sensor-fell-off-what-does-that-mean/56747 "2008-10-20T07:22:24Z")\
**Posts on this page:** 11\
**Page:** 1

<div class="post-metadata">

**Author:** ![dawn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/dawn/32/7209_2.png) [@dawn](https://forums.speedlife.net/u/dawn)\
**Post date:** [October 20, 2008, 7:22am UTC](https://forums.speedlife.net/t/my-o2-sensor-fell-off-what-does-that-mean/56747/1 "2008-10-20T07:22:24Z")

</div>

so last night i heard this rattling underneath my car, and just dismissed it as something stupid with a rusty exhaust bolt or something. you guys know what i mean. so anywho, then i pull out of a parking lot, and my car becomes SUPER loud, like it sounded like a god damn dump truck.

this morning i decide to peak underneath and see what’s going on. and i see an o2 sensor dragging underneath on the pavement. so i take a better look at it, and plug it back into the hole that it goes into.

now my car is quieter again.

but… why did this happen? and i already knew i needed an o2 sensor. does this mean that the… thing it plugs back into is bad?

i hope you guys can understand this. i don’t know what some things are called.

---

<div class="post-metadata">

**Author:** ![JustinH](https://avatars.discourse-cdn.com/v4/letter/j/9fc29f/32.png) [@JustinH](https://forums.speedlife.net/u/JustinH)\
**Post date:** [October 20, 2008, 7:24am UTC](https://forums.speedlife.net/t/my-o2-sensor-fell-off-what-does-that-mean/56747/2 "2008-10-20T07:24:14Z")

</div>

sounds like you have a rusty bung.

---

<div class="post-metadata">

**Author:** ![dawn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/dawn/32/7209_2.png) [@dawn](https://forums.speedlife.net/u/dawn)\
**Post date:** [October 20, 2008, 7:24am UTC](https://forums.speedlife.net/t/my-o2-sensor-fell-off-what-does-that-mean/56747/3 "2008-10-20T07:24:49Z")

</div>

bung hole? hahahaha.

---

<div class="post-metadata">

**Author:** ![Studderin](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/studderin/32/7197_2.png) [@Studderin](https://forums.speedlife.net/u/Studderin)\
**Post date:** [October 20, 2008, 7:34am UTC](https://forums.speedlife.net/t/my-o2-sensor-fell-off-what-does-that-mean/56747/4 "2008-10-20T07:34:53Z")

</div>

probably blew it out from to much use

---

<div class="post-metadata">

**Author:** ![justa4door](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justa4door/32/7259_2.png) [@justa4door](https://forums.speedlife.net/u/justa4door)\
**Post date:** [October 20, 2008, 7:41am UTC](https://forums.speedlife.net/t/my-o2-sensor-fell-off-what-does-that-mean/56747/5 "2008-10-20T07:41:51Z")

</div>

just put a new one in… but yes bung hole is shot

---

<div class="post-metadata">

**Author:** ![nutsandboldts05](https://avatars.discourse-cdn.com/v4/letter/n/73ab20/32.png) [@nutsandboldts05](https://forums.speedlife.net/u/nutsandboldts05)\
**Post date:** [October 20, 2008, 7:45am UTC](https://forums.speedlife.net/t/my-o2-sensor-fell-off-what-does-that-mean/56747/6 "2008-10-20T07:45:57Z")

</div>

I thought Bung holes were all threaded? Welded in pieces of threaded something?

---

<div class="post-metadata">

**Author:** ![justa4door](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justa4door/32/7259_2.png) [@justa4door](https://forums.speedlife.net/u/justa4door)\
**Post date:** [October 20, 2008, 7:49am UTC](https://forums.speedlife.net/t/my-o2-sensor-fell-off-what-does-that-mean/56747/7 "2008-10-20T07:49:42Z")

</div>

dawn did the “nut” come off with the o2 sensor or just the sensor?

b/c if the nut came out with it… you may need a new bung put in

its to much boost

---

<div class="post-metadata">

**Author:** ![dawn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/dawn/32/7209_2.png) [@dawn](https://forums.speedlife.net/u/dawn)\
**Post date:** [October 20, 2008, 8:05am UTC](https://forums.speedlife.net/t/my-o2-sensor-fell-off-what-does-that-mean/56747/8 "2008-10-20T08:05:39Z")

</div>

well i only saw the o2 sensor. i didn’t see anything else. i just stuck it back in, and it’s still loose. i wrapped the wire around the heat shield so it wouldn’t hit the pavement again if it fell out. is that bad?

---

<div class="post-metadata">

**Author:** ![justa4door](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justa4door/32/7259_2.png) [@justa4door](https://forums.speedlife.net/u/justa4door)\
**Post date:** [October 20, 2008, 8:08am UTC](https://forums.speedlife.net/t/my-o2-sensor-fell-off-what-does-that-mean/56747/9 "2008-10-20T08:08:10Z")

</div>

lol … hun you need to get a new one put in … but if the bung itself fell out it need to be fixed

---

<div class="post-metadata">

**Author:** ![dawn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/dawn/32/7209_2.png) [@dawn](https://forums.speedlife.net/u/dawn)\
**Post date:** [October 20, 2008, 8:16am UTC](https://forums.speedlife.net/t/my-o2-sensor-fell-off-what-does-that-mean/56747/10 "2008-10-20T08:16:01Z")

</div>

no i know i need a new one. but for now, that’s what i did.

---

<div class="post-metadata">

**Author:** ![justa4door](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justa4door/32/7259_2.png) [@justa4door](https://forums.speedlife.net/u/justa4door)\
**Post date:** [October 20, 2008, 8:16am UTC](https://forums.speedlife.net/t/my-o2-sensor-fell-off-what-does-that-mean/56747/11 "2008-10-20T08:16:33Z")

</div>

for now it will work i guess