DIY: Replacing O2 / Lambda sensor

[aza013]

I am going to rip it all apart again and try it again

[Storm]

WHAT.. I changed mine and I have not notice any differers I am still getting 300Km out of a tank of flue.

What was the BRAND of O2 sensor?

Mine was of eBay $60buks still got the box some place will look for it to find out the brand.

And since I have changed it the car has a funny noise! Could it be related to the O2 sensor? DON'T KNOW my girlfriends dad said it not from the O2 sensor but I think it might be...

When you installed it what where your steps??

Check the engine temp sensor in the engine bay. It tells the ECU when the engine is up to temp and if it is fubared the ECU thinks the engine is always cold and over fuels constantly.

Bill

[escucalin]

i changed my lambda sensor one month back with one bought from e-bay
But since then my exhaust gas remained rich in fuel .. unburned fuel. What i need is some means to check the works of the garage mechanic. Do you know a non invasive way to find out which pin on the ecu corresponds to the lambda signal so i can measure its output voltage relative to chassis (-) ?

Thanks !

[I8A4RE]

http://www.ftoaustralia.com/modules.php ... ht=diagram

[escucalin]

i must come back and advice all the fto owners to not buy/install generic or universal lambda sensors.
The reason is that the mitsi specs on the lambda sensors are way different than any of the marketed universal ones; and its quality is way superior.

I'm telling u that after a dozen lambda sensors installed and tested(from different suppliers);they all had the output signal voltage 5-10 orders of magnitude under the range needed by the ECU. in the end i installed the original extra expensive one .. which as u may account is 10 times more expensive than a universal one and its price reflects its durability and of course its specs (had the original one for 170 000 km) and changed at 180 000.

[Bennoz]

i must come back and advice all the fto owners to not buy/install generic or universal lambda sensors.
The reason is that the mitsi specs on the lambda sensors are way different than any of the marketed universal ones; and its quality is way superior.

I'm telling you that after a dozen lambda sensors installed and tested(from different suppliers);they all had the output signal voltage 5-10 orders of magnitude under the range needed by the ECU. in the end i installed the original extra expensive one .. which as you may account is 10 times more expensive than a universal one and its price reflects its durability and of course its specs (had the original one for 170 000 km) and changed at 180 000.

I was gonna say, thats all good & well but who's got that kind of coin to buy the genuine units?

Last quote Mitsi gave me for one of them was $700

I ran a generic one with my last built & it was fine. Good for 126kws in fact, from a non mivec donk.

[I8A4RE]

Mine was fine hence why I did the DIY. Maybe you werent buying the correct ones

[gotboost?]

Hi guys,

Just thought I'd provide an updated link to a cheap one on eBay that seems to match up to the one in the DIY, as the old eBay link is dead.

http://cgi.ebay.com.au/Top-Quality-Oxyg ... 492wt_1139

I've just bought one. Hope this helps others!

[Dras]

i must come back and advice all the fto owners to not buy/install generic or universal lambda sensors.
The reason is that the mitsi specs on the lambda sensors are way different than any of the marketed universal ones; and its quality is way superior.

I'm telling you that after a dozen lambda sensors installed and tested(from different suppliers);they all had the output signal voltage 5-10 orders of magnitude under the range needed by the ECU. in the end i installed the original extra expensive one .. which as you may account is 10 times more expensive than a universal one and its price reflects its durability and of course its specs (had the original one for 170 000 km) and changed at 180 000.

I know that this is an old thread but I thought I would throw my 2 cents in.

I replaced my o2 sensor with a generic 4 pin one (a Bosch unit) 5,000kms ago and it is useless. The ECU is running in open-loop mode under all conditions (determined with Haltech Interceptor on a dyno), you would get the same result by simply disconnecting the o2 sensor completely. I am getting about 10L/100km fuel consumption.

[silverGPX]

Mines normal and can get 600kms out of a tank


Sent from my iPhone using Tapatalk

[Dras]

Mines normal and can get 600kms out of a tank

I am getting 10L/100km with a non-functioning o2 sensor in traffic. With a 60L tank, 600km would be very achievable. This doesn't prove that your setup functions.

What I am trying to say is that the car functions really quite well in open loop mode, apparently better than with a dirty oem o2 sensor.

[Daniel2019]

I'm getting sweet f**k all out of a tank.. between 350-450km pending. Thats with a lot of short trips, but I would still assume I should be getting a little more.. Recently ran some injector cleaner through and replaced my fuel filter. Im guessing the O2 sensor is my next bet for fixing up my fuel economy slightly..

Aside from paying apparently ridiculous prices for a brand new mitsi one, what are my options? (does anyone have any recommendations on suppliers/brands aside from SCA - if any)

[Dras]

I'm getting sweet f**k all out of a tank.. between 350-450km pending. Thats with a lot of short trips, but I would still assume I should be getting a little more.. Recently ran some injector cleaner through and replaced my fuel filter. Im guessing the O2 sensor is my next bet for fixing up my fuel economy slightly..

Aside from paying apparently ridiculous prices for a brand new mitsi one, what are my options? (does anyone have any recommendations on suppliers/brands aside from SCA - if any)

At this stage I am looking at this:
http://www.cyberspaceautoparts.com.au/c ... ensor.html

It isn't for an FTO but it is for a 6A12 and is 'only' $150.

I am still looking around though.

[Dras]

It appears that the OE sensor (MD312191) has a Denso DOX-0109 at its heart.

I believe that this is the generic 4 pin o2 sensor that will work for our cars.

[Daniel2019]

Cheers Dras. Will look into it some more in a few weeks time

[Dras]

Bit more research:
Denso's quality of build is a bit ordinary source:http://www.autodata.ru/efisakh/2008/pr6_o2sens_bek.htm (may need Google translate or similar if you don't read Russian)
NTK or Bosch seem to be the way to go.

Universal 4 wire Zirconia o2 sensors seem to come in the following flavours:
Four wire "Thimble" sensor with 12 watt heater, isolated ground
Four wire "Thimble" sensor with 12 watt heater, grounded case
Four wire "Thimble" sensor with 18 watt heater and grounded case
Four wire "Thimble" sensor with 18 watt heater and ground isolated case
Four wire “Planar” construction sensor, 7 watt heater, isolated ground

The Four wire “Planar” construction sensor, 7 watt heater, isolated ground sensors are the ones to go for, for the FTO.
Bosch part number is 0 258 986 602 or LS602.

[Bennoz]

Good info!

[fraz91]

Bit more research:
Denso's quality of build is a bit ordinary source:http://www.autodata.ru/efisakh/2008/pr6_o2sens_bek.htm (may need Google translate or similar if you don't read Russian)
NTK or Bosch seem to be the way to go.

Universal 4 wire Zirconia o2 sensors seem to come in the following flavours:
Four wire "Thimble" sensor with 12 watt heater, isolated ground
Four wire "Thimble" sensor with 12 watt heater, grounded case
Four wire "Thimble" sensor with 18 watt heater and grounded case
Four wire "Thimble" sensor with 18 watt heater and ground isolated case
Four wire “Planar” construction sensor, 7 watt heater, isolated ground

The Four wire “Planar” construction sensor, 7 watt heater, isolated ground sensors are the ones to go for, for the FTO.
Bosch part number is 0 258 986 602 or LS602.

[Daniel2019]

http://www.ebay.com.au/itm/NEW-4-Wire-U ... 0738436183

These OK? (followed part number in first post)

Or do I need to go with a Denso or something?

[Bennoz]

Eh, should do the job