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O2 Sensors Replaced!

rapidroy

By rapidroy,
in Engines & Forced Induction

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rapidroy Enthusiast

rapidroy

Posted
Posted

Just had my O2 sensors replaced and my R32 GTR runs much better!

During cruise and light throttle the car is more responsive and quieter! I no longer have to down shift to go up small grades and the fuel economy is better. I should have done it sooner!

About a month ago I took my car out to Hills Motorsports to have them run it on the dyno. Before we started, they hooked up the diagnostic tool and found my rear O2 sensor was dead, and the front was not responding very well. At R32 GTR owners know, the Titania sensors are expensive. I shopped around and found Kudos Motorsports had the best price on 2 new sensors. I gave them my info and received the O2 sensors within a few days. I took my car back out to Hills Motorsports and they installed them for me. Driving away from the shop I noticed an immediate improvement in the throttle response during light throttle. A side note, the black on the back of my white car from the exhaust has reduced considerably.

Thanks Hills Motorsports and Kudos Motorsports! I would recommend using both of these businesses!

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MrStabby Grand Master

MrStabby

Posted
Posted

To talk the the factory ECU you need a CONSULT cable and software for your laptop. It will show what the sensors are displaying and from that you can deduce their condition. I have the PLMS consult cable. It works.

http://www.plmsdevelopments.com/consult_if.shtml

R.3.2.G.T.R Grand Master

R.3.2.G.T.R

Posted
Posted
To talk the the factory ECU you need a CONSULT cable and software for your laptop. It will show what the sensors are displaying and from that you can deduce their condition. I have the PLMS consult cable. It works.

http://www.plmsdevelopments.com/consult_if.shtml

yup, i have the consult cable + software but didnt check o2 sensors prior to swapping to PFC, do u know if PFC picks up faulty sensors at all?

MrStabby Grand Master

MrStabby

Posted
Posted
yup, i have the consult cable + software but didnt check o2 sensors prior to swapping to PFC, do u know if PFC picks up faulty sensors at all?

Check paulr33's PFC faq;

http://paulr33.skylinesaustralia.com/docs/...powerfc-faq.htm

rapidroy Enthusiast

rapidroy

Posted
  • Author
Posted

I haven't checked the km's per tank yet... I do know that from Tuesday to Tuesday the petrol gage is down on empty. This week it is on a quarter tank. (Not scientific, I know.) The exhaust sound was louder and you could tell it was rich. Now it runs smoother and the exhaust note is crisper. On any slight uphill I would have to down shift. Now it has some power down low so you can just push on the accelerator a little and it picks up speed. My wife even noticed the difference!

The change is significant if your O2 sensors are bad. Because they are so expensive, have them checked first!

Mark out at Hills Motorsports in Castle Hill is very good.

  • 1 month later...
Brezza Proficient

Brezza

Posted
Posted

i've been fairly interested in this thread.

My O2 sensors on my 32 GTR went bust when my turbo blew and obsiously broke the sensor.

since then i got the turbos replaced to new ones, which are the 2860-5's and because the sensor was buggered the car would run like a real pig when they were plugged in. so i unplugged them. then a week later i spun a bearing!

i know bad luck hey!

since that i got a motor rebuild, forgies, new crank, race bearings, thicker head gasket,etc

but didnt replace the O2 sensors, they've only gotten installed today, but for about a month of not having them plugged in on the new motor the car has been runing fine.

getting around 15L/100km which isnt too bad, but that has been conservative driving.

going to pick it up today,

will post again to let you guys know if i notice any difference.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

You can even use a O2 Sensor to test it..

On a cruise in 5th gear doing around 60km/h A/F ratio should be near stoich (14.7) as the closed loop circuitry should trim the fuel down so it leans out, if it's running HEAPS rich you know your O2 is dead.

paulr33 Grand Master

paulr33

Posted
Posted

PFC users

ETC, SENSOR SW CHECK

look at 02-1 and 02-2

these are your 02 sensors

they should blip up and down when you tap the throttle

if they are toast they will show 0.00 or hardly move

and the sensor name may become highlighted in black background if its shagged/unplugged

Brezza Proficient

Brezza

Posted
Posted

the O2 sensors didnt make much difference to overall power, but it definitely does feel a lot nicer to cruise around.

my fuel ecconomy has improved heaps too, i did a bit of a country drive on the weekend and i've still got a 1/4 left in the tank (yes, i know its a guage reading which isnt accurate at all) but i've done 450+ kms

before i would struggle to get 400kms out of a full tank, i know the country drive would've helped.

the car seems to be a little more responsive at low revs too when its off boost.

just feels and sounds more crisp

i got genuine ones, and i'd say they're well worth the money!

Brezza Proficient

Brezza

Posted
Posted

i dont think my mechanic took too long to do it?

he didnt charge me any labour though, because it was supposed to be done with my build but the sensors didnt come in.

i would assume it would be a bit of a pain, just like doing most work in the cramped engine bay of a GTR.

i think you might need a special tool to be able to undo it?

not 100% sure??

Brez

mad082 Grand Master

mad082

Posted
Posted
the O2 sensors didnt make much difference to overall power, but it definitely does feel a lot nicer to cruise around.

my fuel ecconomy has improved heaps too, i did a bit of a country drive on the weekend and i've still got a 1/4 left in the tank (yes, i know its a guage reading which isnt accurate at all) but i've done 450+ kms

before i would struggle to get 400kms out of a full tank, i know the country drive would've helped.

the car seems to be a little more responsive at low revs too when its off boost.

just feels and sounds more crisp

i got genuine ones, and i'd say they're well worth the money!

they shouldn't alter power output.

paulr33 Grand Master

paulr33

Posted
Posted

there is a special tool, 02 sensor removal tool

its bascially an open ended socket so you can slide it over the sensor and it doesnt clash with the plug

i think its about $30 from repco, without it = dont bother

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