My oxygen sensor

bera

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bera

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any symptom your sensor already kaput...??

O2 sensor and cheap do not belong in the same sentence...:biggrin:
 

ericmaxman

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ericmaxman

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any symptom your sensor already kaput...??

O2 sensor and cheap do not belong in the same sentence...:biggrin:
Let's see..

Check Engine Light = No
OBD2 Error codes = No

Only possible hints? It was running a bit richer than another BLM during dyno. That's all, actually.
 

Izso

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O2 sensor quite sensitive wei. You take in and out all the time something will break. Then fc bad and all that lovely stuff associated to a broken o2 then good luck
 

vr2turbo

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vr2turbo

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Should we clean it in like how many thousand KMs? Or only use till it kaput lol.
Never heard of cleaning them. Probably can try if the error code say O2 faulty, then can take out clean and put back to try. If don't work, then have to change...:smokin:
 

ericmaxman

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ericmaxman

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Never heard of cleaning them. Probably can try if the error code say O2 faulty, then can take out clean and put back to try. If don't work, then have to change...:smokin:
Along the lines of soaking it in gasoline (do we have that here in Malaysia? :rofl::rofl::rofl: ) for about 24 hours..
 

boyzone

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Yup!! my engine light is on. There are 2 oxygen sensor for toyota vios. How to DIY to ensure purchase and replace correct faulty oxygen sensor.

Thanks for your prompt reply

Normally, 2nd O2 sensor is located after Cat, a bit difficult to DIY.
Unless u have jack to raise up ur vehicle.
 

vr2turbo

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The scan tool might just say O2 fault but I don't think they will tell which one, so to change is trial and error, means one by one
 

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Straight change both la. Very easy to diy. Probably a size 17 or 21 wrench and WD40. Settle.

Both changed all in should be RM180 for two?
 

gunnerzz

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gunnerzz

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does o2 sensor which has been in service for 180k km causes high fc?
engine light does not lit up.
my car has sudden increase in fc.last time can get 14km/l.
now only 12km/l despite how hard i try.

was thinking to clean the cat con but still dont have time to do so.
also think to pour in the techron additive.
i have check the plug and clean the air filtet.

could it just need a tune up?
 

Allexking

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Straight change both la. Very easy to diy. Probably a size 17 or 21 wrench and WD40. Settle.

Both changed all in should be RM180 for two?
If both really only RM180.00, earlier already change them. Checked with Toyota Spare Parts shop. Quoted around RM300.00 per sensor. Vios got 2 oxygen sensors. Thats why seeking for best solution to me here which as follows:-

1) Way to determine which faulty sensor
2) Any recommended reliable mechanic
3) DIY guide to change
 

vr2turbo

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If both really only RM180.00, earlier already change them. Checked with Toyota Spare Parts shop. Quoted around RM300.00 per sensor. Vios got 2 oxygen sensors. Thats why seeking for best solution to me here which as follows:-

1) Way to determine which faulty sensor
2) Any recommended reliable mechanic
3) DIY guide to change
RM180 maybe is Wira ones?
 

Izso

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If both really only RM180.00, earlier already change them. Checked with Toyota Spare Parts shop. Quoted around RM300.00 per sensor. Vios got 2 oxygen sensors. Thats why seeking for best solution to me here which as follows:-

1) Way to determine which faulty sensor
2) Any recommended reliable mechanic
3) DIY guide to change
Don't ask Toyota la. Go find a generic spare parts shop. If I can find it cheaper will you come to my house and let me charge you to replace it? :biggrin:

Anyway, O2 sensors for smaller cars isn't as scary as the bigger cars. Speaking of which, my Nissan Sylphy O2 sensor costs RM200 at the spare parts shop near my house. I highly doubt the Vios will be more expensive.

1. If you want to check, you need a voltmeter and know how to read it.
2. This is a simple O2 sensor, most if not all mechs can do it.
3. Find a spanner that'll hold the new sensor snugly, WD40 the current sensor - let it soak in, spanner remove it (bit by bit, don't be too aggressive). Unplug it and replace with new sensor and installation is reverse of everything.

Very easy laaa... The biggest problem is finding a cheap sensor only.
 

vr2turbo

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vr2turbo

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Don't ask Toyota la. Go find a generic spare parts shop. If I can find it cheaper will you come to my house and let me charge you to replace it? :biggrin:

Anyway, O2 sensors for smaller cars isn't as scary as the bigger cars. Speaking of which, my Nissan Sylphy O2 sensor costs RM200 at the spare parts shop near my house. I highly doubt the Vios will be more expensive.

1. If you want to check, you need a voltmeter and know how to read it.
2. This is a simple O2 sensor, most if not all mechs can do it.
3. Find a spanner that'll hold the new sensor snugly, WD40 the current sensor - let it soak in, spanner remove it (bit by bit, don't be too aggressive). Unplug it and replace with new sensor and installation is reverse of everything.

Very easy laaa... The biggest problem is finding a cheap sensor only.
Actually got quite a few sure would like to come your house to do it.....:biggrin:
 

Allexking

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Don't ask Toyota la. Go find a generic spare parts shop. If I can find it cheaper will you come to my house and let me charge you to replace it? :biggrin:

Anyway, O2 sensors for smaller cars isn't as scary as the bigger cars. Speaking of which, my Nissan Sylphy O2 sensor costs RM200 at the spare parts shop near my house. I highly doubt the Vios will be more expensive.

1. If you want to check, you need a voltmeter and know how to read it.
2. This is a simple O2 sensor, most if not all mechs can do it.
3. Find a spanner that'll hold the new sensor snugly, WD40 the current sensor - let it soak in, spanner remove it (bit by bit, don't be too aggressive). Unplug it and replace with new sensor and installation is reverse of everything.

Very easy laaa... The biggest problem is finding a cheap sensor only.
Can you check for me which oxygen that faulty FOC first ?? Once confirmed, I can buy from Spare Parts shop for Toyota then let you change for me.

Any best price for your installation fee ??


:hmmmm::hmmmm::hmmmm:
 

Izso

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Can you check for me which oxygen that faulty FOC first ?? Once confirmed, I can buy from Spare Parts shop for Toyota then let you change for me.

Any best price for your installation fee ??

:hmmmm::hmmmm::hmmmm:
I don't have an oscilloscope la. Manual way of checking O2 sensor needs a computer. Just note the voltage of the O2 sensor (with engine on) and mark on Excel then plot a line graph. It should look like a smooth curve and evenly spaced out. If any irregular shape is plotted then it's likely spoilt.

As for installation fee, I was kidding la. Just buy lunch :biggrin:
 

vr2turbo

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vr2turbo

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I don't have an oscilloscope la. Manual way of checking O2 sensor needs a computer. Just note the voltage of the O2 sensor (with engine on) and mark on Excel then plot a line graph. It should look like a smooth curve and evenly spaced out. If any irregular shape is plotted then it's likely spoilt.

As for installation fee, I was kidding la. Just buy lunch :biggrin:
Probably the petrol and toll cost more, depending where you stay.........hahhahahhahaha
 

Allexking

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Conclusion

When engine light on, google around to check what caused it. One of it, is about ignition coil. Did manual check on those 4 ignition coil. That moment, all still functioning. Focus on other area that may lead the engine light on. Two foremen checked on why engine light is on.

Both of them also said most probably is the oxygen sensor that faulty. Both also advise must double confirm with those workshop with diagnose meter. Continue drive my car for almost three weeks without knowing the real cause. Last friday evening, the car feel jerk when on D or R, during N no jerk at all. During acceraleration, can feel jerk also.

Early morning yesterday do some manual check on those ignition coils again. Confirmed one of them spoilt.

To be continued later (Rush for works)


[FONT="Arial Na[FONT="Arial Narrow"]rrow"]Continuation[/FONT]

After purchase new original ignition coil costs me RM200.00. Replaced it myself in office carpark. After installed, disconnect the battery (-) terminal for around 5 minutes.

After that start my car to check the jerk & engine light whether still on.

Bingo!!!!!!!!

Both problem rectified

P/S - Above information can be used for those who are facing same scenario with me

Happy motoring
[/FONT]
 
Last edited:

Izso

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Conclusion

When engine light on, google around to check what caused it. One of it, is about ignition coil. Did manual check on those 4 ignition coil. That moment, all still functioning. Focus on other area that may lead the engine light on. Two foremen checked on why engine light is on.

Both of them also said most probably is the oxygen sensor that faulty. Both also advise must double confirm with those workshop with diagnose meter. Continue drive my car for almost three weeks without knowing the real cause. Last friday evening, the car feel jerk when on D or R, during N no jerk at all. During acceraleration, can feel jerk also.

Early morning yesterday do some manual check on those ignition coils again. Confirmed one of them spoilt.

To be continued later (Rush for works)


[FONT="Arial Na[FONT=Arial Narrow][SIZE=4]rrow"]Continuation[/SIZE][/FONT]

After purchase new original ignition coil costs me RM200.00. Replaced it myself in office carpark. After installed, disconnect the battery (-) terminal for around 5 minutes.

After that start my car to check the jerk & engine light whether still on.

Bingo!!!!!!!!

Both problem rectified

P/S - Above information can be used for those who are facing same scenario with me

Happy motoring
[/FONT]
Jerking ka? Aisay. I thought what was the original problem. If jerking then 9/10 times it's the coil mah. Rarely ever is it the O2 sensor.

But nice job anyway!
 
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