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Author Topic: Gas tip Tuesday- Importance of the oxygen sensor Back to Topics
PD

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Message Posted: Jan 11, 2011 12:32:29 PM

With vehicles becoming more and more reliant on sensors and electronics to run right, the stakes are rising that if one of the sensors fails, you may see a huge drop in fuel economy.

One of the most important sensors on a vehicle is the oxygen sensor. Every car built after 1980 has one or even more oxygen sensors. One of the main reasons oxygen sensors were installed was to cut back on emissions. The ultimate reason for the oxygen sensor is to cut emissions and help the vehicle run as efficiently as possible.

A car burns gasoline along with oxygen from the air to create an explosion. The oxygen sensor ultimately measures the oxygen content of the exhaust and determines if more or less fuel is needed to make the car run...

Visit GasBuddy Blog for full article
REPLIES (newest first) Post a Reply
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gashole84
Rookie Author Ohio

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Message Posted: Mar 13, 2013 5:11:13 AM

glad i read this
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paulweb
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Message Posted: Feb 24, 2013 11:22:04 AM

Nice to know.
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Tommyguns45
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Message Posted: Feb 22, 2013 9:25:03 AM

Thats why we seen scoops on some hoods back in the 60 and 70's because the the more air that got to the carburetor the better it ran and better gas mileage too.
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USMCturtlehead
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Message Posted: Feb 17, 2013 7:00:19 PM

Oxygen sensors are fine but there are so many sensors on vehicles nowadays that engine lights are like traffic lights. Get tired of error messages that give you no solution other than take vehicle for service. Dealer tells you it could be one of several malfunctions. Then they proceed to guess what to fix and send you on your way after they have reset engine light which seems to reappear shortly after service. All you can do is take it back to dealer for another fix hopefully. RATHER BE DRIVING GAS GUZZLERS THAT I COULD FIX ON MY OWN.
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MiataPrincess
Champion Author Des Moines

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Message Posted: Feb 16, 2013 1:52:44 PM

Nice to know...another reason to do regular maintenance on your car
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swampman
Sophomore Author Ontario

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Message Posted: Feb 16, 2013 10:16:46 AM

old information
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Gas4Gore
Champion Author Detroit

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Message Posted: Feb 15, 2013 11:46:28 PM

Had a lot of trouble with my lincoln ls.
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Mr1lung
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Message Posted: Feb 15, 2013 1:39:46 PM

ok
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TOOMUCH
Sophomore Author Toronto

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Message Posted: Feb 13, 2013 3:16:08 PM

much needed information.
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lazydoggs3
Veteran Author Fresno

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Message Posted: Feb 13, 2013 11:53:51 AM

Great article
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Vette1967
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Message Posted: Feb 8, 2013 1:31:48 AM

Very true.
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Tommyguns45
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Message Posted: Feb 6, 2013 8:58:09 AM

Dont need one on our bicycles we ride at night.
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Donatelo
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Message Posted: Oct 17, 2012 12:55:11 PM

ok
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clpassenubye
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Message Posted: Oct 17, 2012 12:23:36 PM

very important many people don't know of or understand this part
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pricewar
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Message Posted: Sep 26, 2012 12:34:21 AM

my sensors say park the car and ride a horse,
can't get any greener than that
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dcone2
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Message Posted: Sep 25, 2012 7:43:03 PM

ok
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bull2010
Sophomore Author Houston

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Message Posted: Sep 25, 2012 7:00:44 PM

true,& if bad check eng light should stay on. if so get free computer check at any autozone. also important are plug wires,plugs,& or coil paks for fuel economy & engine smoothness.
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repseng
Sophomore Author Twin Cities

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Message Posted: Sep 25, 2012 6:32:40 PM

K
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txrojo2005
Champion Author Austin

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Message Posted: Sep 25, 2012 3:06:49 PM

I used to be able to work on my car. No longer. It is all computerized requiring dealer involvement.
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clpassenubye
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Message Posted: Sep 25, 2012 12:16:31 PM

thanks for the info
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CapriceWagon
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Message Posted: Sep 25, 2012 11:33:00 AM

I was getting about 15 mpg before I changed the O2 sensor, it jumped to more than 20 mpg afterwards
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DucatiRider
Rookie Author Maryland

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Message Posted: Sep 25, 2012 10:54:39 AM

Truly wonderful technology. This allows the engine to run at near perfect tune at all times in all conditions.
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mabrams184
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Message Posted: Sep 25, 2012 7:47:56 AM

Good info
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pricewar
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Message Posted: Sep 20, 2012 11:00:27 PM

If your 02 sensor fails, your engine light will come on. if you can turn a wrench and with patience you can replace it yourself, saving you some ching ching ( ok money)
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albert2008
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Message Posted: Sep 20, 2012 2:41:25 PM

good stuff
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DeeLA
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Message Posted: Sep 20, 2012 2:20:34 PM

I learned something from this article. Thanks for posting it.
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clpassenubye
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Message Posted: Sep 19, 2012 11:56:24 AM

interesting
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clpassenubye
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Message Posted: Sep 19, 2012 11:56:24 AM

interesting
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molebaby96
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Message Posted: Sep 19, 2012 8:39:12 AM

I've changed a few and it does improve the gas mileage.
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Vette1967
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Message Posted: Sep 18, 2012 10:49:27 PM

Okay...thanks.
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Edpap
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Message Posted: Sep 17, 2012 6:55:12 PM

Putting a $2 bottle(WALMART) of fuel injector cleaner in your tank when you fill-up also cleans the sensors, and will turn off many "check engine" light problems within a few miles. Much cheaper chance than the dealer charge for diagnostics.
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GasFreeLeaf
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Message Posted: Sep 17, 2012 12:12:24 PM

Thank you
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azra2011
Rookie Author Iowa

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Message Posted: Jul 15, 2011 10:07:48 AM

The more you step on you accelaeator the more gas u waste. Dont drive your car fast,and dont use the gas to much or the breaks to much. This will help you save a little gas.
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fedtx
Sophomore Author Texas

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Message Posted: Jun 24, 2011 9:02:04 PM

My car has a sensor that comes on if the tire pressure is low. I like that feature. Otherwise I may be going flat and not know it.and also get reminded to check the pressure.
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dorisntx
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Message Posted: May 3, 2011 8:39:31 PM

I need to check into this. My car's acting weird...
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CivicMindedCA
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Message Posted: Apr 30, 2011 2:19:12 PM

Tracking your mileage would make this easier to spot sooner.
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SophiaCA
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Message Posted: Apr 29, 2011 5:45:02 PM

need to check everything once a when you operate your car
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Jmkinsey1984
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Message Posted: Apr 27, 2011 10:01:04 PM

I always make sure that I release my oxygen sensors
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Eric2448
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Message Posted: Apr 12, 2011 1:45:32 AM

Impressive.
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Eric2448
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Message Posted: Apr 12, 2011 1:45:06 AM

Impressive.
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TulipBlue
Rookie Author Michigan

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Message Posted: Apr 7, 2011 4:56:38 AM

Along with the Oxygen Sensors, Make sure Fuel cap stays tight and has a good seal. When in doubt,Replace it.
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srqmale67
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Message Posted: Apr 6, 2011 9:03:55 PM

I see
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babygirlNC
Sophomore Author North Carolina

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Message Posted: Apr 5, 2011 12:29:02 PM

yes....
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clpassenubye
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Message Posted: Mar 30, 2011 5:26:56 PM

I have to get that checked out
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PathfinderSC
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Message Posted: Mar 29, 2011 6:10:06 PM

Just changed mine last week
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Bud76
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Message Posted: Mar 27, 2011 8:34:45 PM

My check engine light came on solid one of the culprits was the oxygen sensor then a week later had another check engine light episode this time my fuel cap needed to be replaced the cap was ten years old.
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maxstar
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Message Posted: Mar 2, 2011 9:07:32 PM

If your check engine light comes on it could be one of the oxygen sensors.
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ToyotaJeeplady
Rookie Author Ontario

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Message Posted: Feb 25, 2011 11:05:04 AM

There are too many computer gadgets on cars now. Repair stations now need a computer expert and a mechanic. Gone are the days when you could look after your whole car.
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PathfinderSC
Champion Author South Carolina

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Message Posted: Feb 21, 2011 6:59:09 PM

Just had it replaced on the Toyota, And see a big difference.
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gasokie
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Message Posted: Feb 18, 2011 3:50:27 PM

Just keep track of your gas millage. If it drops then have your O2 sensor and whatever checked.
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