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O2 Sensor, Idle Problem

CATKICKER

By CATKICKER,
in General Maintenance

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CATKICKER Mentor

CATKICKER

Posted
Posted

Hi Guys, I am having an issue with my idle...

When I come to the lights, the revs will sit at 1500rpm for about 5 secs or so and then drop down to around 900rpm... It's annoying me!!

I have cleaned the AFM, Re-soldered the internales of the AFM and cleaned the ACC valve. I have also checked vaccume hoses ect and can't find anything.

The only thing that I can now think of is the O2 sensor (I have recently replaced the stock dump with a 3" jobbie).

Where do I get one from? Can I just use a universal one or is it the same as the VL turbo??

Can anyone suggest what else it may be?

Thanks all!

Todd

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https://www.sau.com.au/forums/topic/126058-o2-sensor-idle-problem/
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mad082 Grand Master

mad082

Posted
Posted

more info needed. car, motor? i know that you can buy a NGK sensor for about $110 for the rb25det, and the rb20det. i don't know if they are the same plug. i gather that the non turbo would be the same, but not 100% sure on that. but the sensor for the rb25det is the same as a SSS pulsar (sr20 motor).

but my old SSS pulsar does the same thing when you stop though. what is your fuel economy like?

CATKICKER Mentor

CATKICKER

Posted
  • Author
Posted

Thanks mate...

R32 GTS-t (RB20det).

Mods:

FMIC

EBC

Dr Drift remap and tune

3" Ex + Dump

Pod

R34 Turbo

Irridum Plugs

Bosch 040 Fuel Pump

I do a bit of highway driving to and from work and generally get 350-400km's to a tank...

I have recently replaced my coils due to missfiring, and as I said have done the AFM and ACC valve.

In my mind this is the next step? Would you agree?

mad082 Grand Master

mad082

Posted
Posted

it really comes down to the map that the ecu is running on. you may change the o2 sensor and have it still do it. its a fair bit of money to get rid of it. come to think of it i think my car does it (r33). i will check over the weekend. i know it used to do it, but i haven't taken much notice for a while. i did replace my o2 sensor a while back (trying to get better fuel economy). didn't make a difference to fuel economy. i'm about 90% sure it used to do it, but i'm not sure if it still does.

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