Checking your O2 sensor

[levin818]

This is a very simple step by step on how to check your O2 sensor whether it is in good working condition or need a change. If you have not get yours check, please read on. If you already get yours checked and feel that this post is boring, then please jump to the following links: Girls of The Goodyear Formula Drift Malaysia : Zerotohundred.com

Here you go ~

1) Turn off your engine
2) Locate your diagnostic connector, and look for terminal "OX1" and "E1"
3) Get an analog multi meter (any brand can do)
4) Select to 2.5Vdc range
5) Insert the red colour probe to "OX1", and black colour probe to "E1"
6) Place the multi meter on the windscreen, as near to the driver side as possible
7) Start your engine
8) Wait till it reach working temprature
9) Keep your RPM at 2500
10) Observe you multi meter's needle. It should be moving up and down, from 0 to 2/5 of full scale.
11) Time your watch, a good O2 sensor will move the needle up and down for at least 8 times in 10 sec.

If your needle move less than 8 times per 10 sec, or idle at any scale, your O2 is dead.
Change it asap to safe the world.

Have a good time!

 

[n0th1n]

now i know how to test my o2 sensors!!! good job sifoo

 

[Jordy]

I have to say this... THANK U THANK U THANK U ~~~~ i always been trying to check my O2 but dunno how... Thanks Bro~ This is a Great Info... Tripple tumb for u ~

 

[hon_cs]

Thumbs up. Very good info. By the way, all analog multi meter same? Roughly how much to get this?

 

[levin818]

Any analog volt meter with 2.5Vdc range can do.
If you selected 10Vdc range, the needle will move up to 1/10 of the scale only thus difficult to read.
I got that SANWA (Japan) at RM140. If SUNWA (Tawan) would be around RM80(?)

When fire is burning your backside, you will learn

 

[olskool]

Wow..thanks bro. good stuff!

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[hon_cs]

Any analog volt meter with 2.5Vdc range can do.
If you selected 10Vdc range, the needle will move up to 1/10 of the scale only thus difficult to read.
I got that SANWA (Japan) at RM140. If SUNWA (Tawan) would be around RM80(?)

When fire is burning your backside, you will learn

hahah sanwa and sunwa. damn..

 

[levin818]

Thank you Olskool :)

 

[chinozie]

Levin818 - Kindly approve the permission to post this on my blog...

 

[levin818]

Approve !!!

 

[olskool]

Thank you Olskool :)

Thanks bro! I think if we get inside your brain we can write a DIY ECU & Engine diagnose manual! hehe..

 

[TRD.AE92]

levin, nice watch from Intel!

 

[ombakjernih]

thanks bro...will try as soon as possible...

 

[chinozie]

For those having A/F ratio meter...
there's no need for you guys to check as above...

as the meter (regardless analog or digital) already showed...flickering / moving back and forth...

same goes with apexi pen timer...

 

[Jordy]

No wonder my Apex'i Pen Timer the A/F flickering...no reading..so means is the O2 dead rite?

 

[et_box]

No wonder my Apex'i Pen Timer the A/F flickering...no reading..so means is the O2 dead rite?

Mine just shows a red light... Could it be that mine is busted too?

 

[levin818]

Its difficult to count the no. of flickering by Apexi pen timer (or you will get headache). However if you are using LED dot display type A/F meter, then you just need to count how many times the LED goes up and down in 10s.
If your LED stop and didn't move at 2500rpm, the your O2 is dead.

TRD.AE92,
That watch is power by 2GHz Intel processor

 

[chinozie]

Levin818 - Means it's fluctuate in between these voltage readings ?

depends on your A/F Ratio setting...

Lean Range (.050 to .249V)
Stoichiometric (.250 to .749V)
Rich Range (.750 to 1.000V)

 

[levin818]

Yeah fluctuates between 0 ~ 1v.

 

[r60262]

hehe... good info to share.... thanks wong.. but i think u can share many more.... thanks again sifo.... last week my car short... but lucky la... only blow fuse.. ur ecu success...safe..