Ok to run without O2 Sensor?

[coolchu001]

I've just gotten a new Bosch O2 sensor for my Camry (for exhaust header), I was wondering if it is ok to run the car without the old sensor for like a day or so until the new one is installed....

[Toysrme]

What engine do you have?

One, you'll be venting tons of exhaust out the hole if it's unplugged.
Two, the car will more than likely throw itself into limp mode and run open-loop. Poor performance, and extremely high fuel consumption will more than likely result.

[Ne0z31]

not sure about the header, but my car has been runnin without the middle exhaust one for months...

[88 LE]

You can run it without a O2 sensor, but the engine will run rich and you'll have a check engine light.

[coolchu001]

Originally Posted by 88 LE

You can run it without a O2 sensor, but the engine will run rich and you'll have a check engine light.

When you say "run rich" does that mean huge fuel comsuption?......because the reason why I want to change it to get better MPG!

[Gen3cruiser]

WTF would you drive a few days without it?

It's held on by two 12mm nuts!

[coolchu001]

Well i've heard that if there isnt an O2 sensor it'll go with default fuel/air ratio, so i just wanna see if changing or running without one would help my MPG

[Gen3cruiser]

Dude, no o2 sensor is not a good idea, why do you think there is one in there? For looks?

Your car, but why not take the old one out and put the new one in right after you remove it?

Plus your forgetting one MAJOR THING. With no o2 sensor your gonna have exhaust pouring into your engine bay, hope you liek to smell exhaust, cause you'll be smelling pleanty.

Did i mention it that can be fatal?

[88 LE]

Originally Posted by coolchu001

Well i've heard that if there isnt an O2 sensor it'll go with default fuel/air ratio, so i just wanna see if changing or running without one would help my MPG

The ECU uses the O2 sensor to determine and adjust the a/f ratio.

Without the O2 sensor the ECU will go into limp mode like mentioned above. You'll get worst gas milage without it.

Just remove the old one and install your new one. Its not that complicated.

[trixx]

Do you need any special tools to take out the old one?

[Gen3cruiser]

Yes, it's a magical wrench known as a 12mm. VERY hard to come by.

[trixx]

Your sarcasm knows no bounds

[Pineapple]

Originally Posted by Gen3cruiser

Yes, it's a magical wrench known as a 12mm. VERY hard to come by.

Yea I can't found it in my SAE wrench kit. I don't know why

[88 LE]

^ In that case use a left handed metric adjustable wrench.

The important thing is that its left handed and metric.

[Ne0z31]

i noticed that newer model Camry's dont have the Exhaust O2 Sensor... why is this and is it okay for me to be running w/o one... right now im pretty much running great without an exhaust system at all