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Hunting Problem, Little Help Please

Medium Dave

By Medium Dave,
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Medium Dave Proficient

Medium Dave

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Hi Guys,

I think I might have tracked down the cause of my hunting problem to the O2 sensor in the exhaust next to the turbo, when it is plugged in it hunts, when I unplug it she runs smoothly, for about 10 minutes... Is it reasonable to assume that if I replace the sensor I will fix the hunting problem, or is this an indication of a different faulty thing. Sorry for the noob like question, I still have much to learn. Any help is much appreciated.

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mad082 Grand Master

mad082

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it could fix the problem. could be a mix of other things aswell and that is just a small part. depending on how many k's your car has done its probably worth replacing it anyway. costs about $110 from autobarn for a NGK direct fit. also might be worth cleaning the idle control valve.

Medium Dave Proficient

Medium Dave

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Mmm, should have mentiond I have done some other fault finding, aac, tps ect.. it is also pretty heavy on fuel too, so I am pretty sure it will work, just wanted a seccond opinion before I got my hopes up, its such an annoying problem...

tridentt150v Grand Master

tridentt150v

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Posted
Mmm, should have mentiond I have done some other fault finding, aac, tps ect.. it is also pretty heavy on fuel too, so I am pretty sure it will work, just wanted a seccond opinion before I got my hopes up, its such an annoying problem...

I had this problem, turned out to be my afm. I used some carbie cleaner [pressure can] on it and cleaned it up. It was OK after that.

afm probably had some oil or dirt on it.

BH_SLO32 Proficient

BH_SLO32

Posted
Posted
Mmm, should have mentiond I have done some other fault finding, aac, tps ect.. it is also pretty heavy on fuel too, so I am pretty sure it will work, just wanted a seccond opinion before I got my hopes up, its such an annoying problem...

Found the same intermittent problem on my Bro-in-laws car and remedied the hunting by disconnecting the O2 sensor. The problem was he had already replaced the aftermarket O2 sensor with another (same) item he purchased from Autobahn for $110. Once I threw a geniune item in the problem was fixed. The aftermarket one worked fine sometimes but intermittently caused the car to hunt.

There was a thread on this topic a couple of months ago probably worth having a read. In any instance a genuine item is the safest bet.

Hope this helps.

Cheers

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