02 sensor

[wallybirt]

Just wondering , Are bank 1 and bank 2  sensors the same sensor or are they different . I am about to replace one on front and that dirtly little guy at the back of engin..  Thanks.Norm 

[DILLARD000]

Need to state basic vehicle specs: Year + Model + Engine +....

in your profile+signature+thread; makes asking+answering questions much easier+quicker.

Personally, I've burned out all my "mind reading" senses over several decades trying to figure out what\who my wife is talking about.

 

I know for the 2007~2010 Ford Edge\MKX, there are 4 NarrowBand OxSensors, each has a different length 4wire cable,

but the Sensors & the 4pin connectors are all the same & interchangable,

so a Bosch 15719 with the long 24i00 0m610 Cable+Plug is good to replace any of those 4 NarrowBand Sensors

 just use black ZipTies to secure\coil & route the Cable away from Hot\Moving parts.

Of course Ford has different chaotic part numbers for each CarModel + specific sensor & dealerships will gladly sell them at jacked up prices.

Just buy\order equivalent Bosch (FactoryOE supplier) new sensors for the best price you can find.

Yep, these OxSensors do wear out & need to be renewed every 100kMiles\12years

along with Iginition Plugs+Wires, to maintain engine performance & MPGs.

Edited January 9, 2023 by DILLARD000

[wallybirt]

Thanks for your reply,  I have a 2011 ford edge with a  3.5 motor .Looking to replace 2 sensors .One in front of motor and one at the back. i think they are both upstream . Just not sure.

 

[DILLARD000]

On 1/9/2023 at 10:13 AM, wallybirt said:

...2011 ford edge with a  3.5 motor

...Looking to replace 2 sensors...One in front...one at the back

...think they are both upstream...not sure.

Your 3.5L has a total of four 4Wire NarrowBand OxSensors:

* 2 UpStream, 1 mounted in the top of each ExhaustManifold

+ 2 DnStream, 1 mounted in the side of each CatalyticConvertor.

Al four are operationally the same with the same 4pinConnectors & pinouts;

only difference is FactoryOE sensors have different cable lengths, otherwise they are interchangable.

Again a Bosch 15719 with the long 24i00 0m610 Cable+Plug is good to replace any of those 4 NarrowBand Sensors.

The 2 UpStream OxSensors are used by the PCM\Computer to determine Fuel+Air mix.

The 2 DnStream OxSensor are used by the PCM\Computer to monitor the 2 CatCons, these don't effect the fuel+air ratio, but are required by EPA & most states.

The 2 OxSensors on the front side (Bank2 OxSensor21 + OxSensor22)  are easy to access+change.

The 2 OxSensors on the back side (Bank1 OxSensor11 + OxSensor12) are harder to access+change,; see pic below.

OxSensors have a chemical element that wears away with miles & time;

they bias the Fuel\Air mix richer as they age, causing lower MPGs & the CatCons to run hotter due to excess fuel in the exhaust;

thus all 4 OxSensors should be renewed every 100kMiles\12years, along with IgnitionPlugs+Wires.

 

Edited January 12, 2023 by DILLARD000

[enigma-2]

After reading your post I checked the Lincoln Maintenance Manual and there is no recommendation for changing the O2 sensors at any specific intervals. Checked the service manual and same/same. Don't disagree but thought it strange they don't require changing or testing for age. They used to trigger a check engine at specific intervals for that. Wonder what changed?

[wallybirt]

Thank you all. Replaced both  upstream sensors, edge drives like it has new engine.

[DILLARD000]

On 1/22/2023 at 3:34 AM, enigma-2 said:

After reading your post I checked the Lincoln Maintenance Manual and there is no recommendation for changing the O2 sensors at any specific intervals. Checked the service manual and same/same. Don't disagree but thought it strange they don't require changing or testing for age. They used to trigger a check engine at specific intervals for that. Wonder what changed?

Thing about OxSensors is they have a chemical sensing element that wears out with usage+time;

as they wear out, gradually their signal becomes increasingly erroneously biased towards high oxygen content,

causing the Computer\PCM to compensate & bias the Fuel|Air mix towards rich,

thus MPGs tend to slowly decrease as OxSensors age & CatConvertors gradually run hotter to burn off that excess fuel.

Eventually their signal will bias enough to be out of range of PCM program limits & sets a TroubleCode;

well before that happens you're definitely paying for lower MPGs & wearing\burning out the CatCons prematurely.

Ford doesn't have a problem with you paying more for fuel or paying them to replace CatCons.

 

 

 

 

Edited January 25, 2023 by DILLARD000

[EDST777]

On 1/24/2023 at 5:03 AM, DILLARD000 said:

Thing about OxSensors is they have a chemical sensing element that wears out with usage+time;

as they wear out, gradually their signal becomes increasingly erroneously biased towards high oxygen content,

causing the Computer\PCM to compensate & bias the Fuel|Air mix towards rich,

thus MPGs tend to slowly decrease as OxSensors age & CatConvertors gradually run hotter to burn off that excess fuel.

Eventually their signal will bias enough to be out of range of PCM program limits & sets a TroubleCode;

well before that happens you're definitely paying for lower MPGs & wearing\burning out the CatCons prematurely.

Ford doesn't have a problem with you paying more for fuel or paying them to replace CatCons.

 

 

 

 

Hi! Thanks for the valuable information about oxygen sensors! Very few details about these sensors, very little information when they need to be replaced. My observations are that the owners of the Ford EDGE replace them when there is any error on these sensors, but now we know from this topic that the sensors need to be replaced. This is the preamble.
 I own the 2008 FORD EDGE AWD , I now have 202,000 km and I’ve never changed these sensors since I bought a car for 80,000 km in 2011. My gasoline consumption in the summer is 17 liters per 100 km, in the winter it’s 19 liters per 100 km , where I live frosty winters,  winter weather is like the weather in Canada, average temperature from -10 to -20 degrees C . I would like to replace these sensors, but should I buy BOSH or can I use for example also Stellox? 

Edited August 22 by EDST777

[EDST777]

On 1/9/2023 at 1:16 PM, DILLARD000 said:

Need to state basic vehicle specs: Year + Model + Engine +....

in your profile+signature+thread; makes asking+answering questions much easier+quicker.

Personally, I've burned out all my "mind reading" senses over several decades trying to figure out what\who my wife is talking about.

 

I know for the 2007~2010 Ford Edge\MKX, there are 4 NarrowBand OxSensors, each has a different length 4wire cable,

but the Sensors & the 4pin connectors are all the same & interchangable,

so a Bosch 15719 with the long 24i00 0m610 Cable+Plug is good to replace any of those 4 NarrowBand Sensors

 just use black ZipTies to secure\coil & route the Cable away from Hot\Moving parts.

Of course Ford has different chaotic part numbers for each CarModel + specific sensor & dealerships will gladly sell them at jacked up prices.

Just buy\order equivalent Bosch (FactoryOE supplier) new sensors for the best price you can find.

Yep, these OxSensors do wear out & need to be renewed every 100kMiles\12years

along with Iginition Plugs+Wires, to maintain engine performance & MPGs.

also want to clarify the following: on rockauto system gives two types of sensors:  BOSCH 15724 for down stream and BOSCH 15755 for up stream.  BOSCH 15724 is twice as cheap, does this mean that I can buy 4 BOSCH 15724 sensors, which will work like two overhead flow and two downstream flow. You said they were functionally and technically identical?

[DILLARD000]

A Bosch 15719 with 24i00 0m610 Long Cable+Plug is good to replace any Ford 4WireNarrowBand Sensor, just ZipTie extra cable away from Hot\Moving parts.

The FordMotorCraft parts are 7t4z-9f472-a\7t4z-9f593-a\5f9z-9g444-ab\dy1056, but no need to pay jacked up dealership prices, just buy the Bosch sensors.

 

Again, Bosch is the original equipment maker+supplier for these sensors to Ford factories and dealerships; same item, just a different part number in a different box.

Again, upstream and downstream sensors have the same sensor head and the same connector; only difference is the 4wire cable length,

so the longer cabled sensor can be used in any position.  If you are not convinced or comfortable with this, okay pay for Ford boxed parts and\or dealership labor.

It's your vehicle, it's your money, it's your choice.  Can't speak\vouch for any other brand of OxSensors beyond Bosch or Ford.

 

[EDST777]

21 minutes ago, DILLARD000 said:

A Bosch 15719 with 24i00 0m610 Long Cable+Plug is good to replace any Ford 4WireNarrowBand Sensor, just ZipTie extra cable away from Hot\Moving parts.

The FordMotorCraft parts are 7t4z-9f472-a\7t4z-9f593-a\5f9z-9g444-ab\dy1056, but no need to pay jacked up dealership prices, just buy the Bosch sensors.

 

Again, Bosch is the original equipment maker+supplier for these sensors to Ford factories and dealerships; same item, just a different part number in a different box.

Again, upstream and downstream sensors have the same sensor head and the same connector; only difference is the 4wire cable length,

so the longer cabled sensor can be used in any position.  If you are not convinced or comfortable with this, okay pay for Ford boxed parts and\or dealership labor.

It's your vehicle, it's your money, it's your choice.  Can't speak\vouch for any other brand of OxSensors beyond Bosch or Ford.

 

Thank you for your help, I appreciate it, your experience is important to me. The question about the Bosch 15719 sensor came up because I was looking at reviews on amazon for this sensor, and there were any number of people who had experienced failure when installing a non-genuine sensor, even when it was listed as a suitable replacement. Bosch commented that this is due to the sensor being larger than the original or having a longer wire, perhaps this is just a formal response from Bosch, but I thought I'd clarify. If you have installed this particular sensor that would be a good sign for me to buy. Also wanted to clarify, if the low flow sensors do not affect the formation of the fuel mixture (as I understand they give a signal only when the catalyst is defective), can I just replace the two upper flow sensors, because my low flow sensors do not give now errors, my task to reduce fuel consumption, and this is the work of the upper flow sensors. What do you think about this ? any thoughts.....

 

Edited August 22 by EDST777

[EDST777]

On 22.01.2023 at 19:26, wallybirt said:

Спасибо всем. Заменил оба датчика вверх по потоку, движок едет как новый.

Hi, what model of sensors did you install?