Thread: *Pics* Where is my Oxygen sensor and what could be leaking?

Is this my oxygen sensor? (see pictures) I need to replace it. This was closeted thing I found based on what the guy from Auto zone said and looks like the part he showed me, but it looks all taped up, how do I fix that??? I also notices my coolant was low and I added water a few months back and it has been doing fine and i also had it pressure check and there was no leaks, according to the shop that is. Few months later it was low again and I added water the other day and today when I was looking for my oxygen senor I notices a leak of water in my engine bay, based on the pictures where do you guys think it leaking from?



Center bottom with tape on it, is that oxygen sensor?


Water, behind driver side of the fan of the radiator

No, you front oxygen sensor is on the rear exhaust manifold. It is sticking straight up, can't miss it.


as far as the leak, that is condensation. Turn the AC off entirely, and I betcha it wont 'leak'

If your coolant mysteriously disappears probably a blowm LIM gasket.

None of your pictures show the rear of the engine.


This is the rear exhaust manifold. That little hole in the very center (below the letter M) is where the front oxygen sensor is.

Get a paper towel on that fluid to see what color it is.

O2 sensor is on the opposite side of the engine in the exhaust by the firewall.

No. No it is not. They are all pushrod. Guy at autozone is retarded.

az lets u rent tools and you get ur money back its only like 50 bucks i think you will need someting to slide over or around the wire so yo can break the sensor loose and they have tools designed just for that sensor and you can just use your own ratchet

yes the dog bones are on the front and yes pull it towards you i use a ratchet tow strap pb blaster is for rust its in a rattle can and is called pb blaster (not trying to be rude but pb doesnt really stand for anything) az will have some ive used pb blater wd40 and a small blow torch(you might not need it) to get mine off

Originally Posted by Jtiger360

thanks, what if I do not have a ratchet tow strap? :/

rope bungy cord something you can use to hold the engine forward so you can reach behind it ive got shorter arms and ended up carfully climbing ontop the engine to do it BTW do not do this when hot you will burn ur self even if you think your being carfull trust me and it sucks

Originally Posted by travisgt2

rope bungy cord something you can use to hold the engine forward so you can reach behind it ive got shorter arms and ended up carfully climbing ontop the engine to do it BTW do not do this when hot you will burn ur self even if you think your being carfull trust me and it sucks

bungee cord? really?

this thread is full of lols.

OEM/Vacuum switch socket (25207) | Sensor Socket | AutoZone.com_
something similer to this

i went and got everything i needed that nght and let it sit till morning and did it the next day not saying you got towait that long but should deffinatly wait to let the engine cool

Originally Posted by machinegunsquid

No. No it is not. They are all pushrod. Guy at autozone is retarded.

Actually.....you may as well work at autozone from that statement lol

A 3800 is an overhead valve engine.....retard

if antifreeze is leaking can also check ur coolant elbows see if the seals have gone bad on them or if there cracked