Idle Hunting 500 - 1800 once it warms up..

I get no codes thrown at me cause im using a PFC...

Ive tried disconnecting the IACV and makes no difference to ilde but when i unplug and replug it i can hear it make a noise...

I also unplugged and repluged my O2 sensor and it doesnt change idle at all..

I tested out my GFs Integra when i unplug her IACV her car idles low and rough unlike my...
But i cant get her O2 sensor unpluged as its real tight and i dont wanna damage it.....

My hand controler showsa 0.02 voltage for the O2 sensor...
What voltage should it display???
And should it go up and down with the hunting idle if it wasnt O2 related???

disconnect your fitv, its located underneath your throttle body

Yep ive bypassed it..
I have a hose feding coolant straight to the IAVC and still same problem...

I put it back the way it was..
Was i meant to block off the air holes now that theres no coolant going thruough it???

This all just started straight after installing a skunk2 manifold...
I used new gaskets and used gasket sealer when the idle problem started (ipulled it all apart again)

PFC doesnt throw codes plug a stock ecu in and try that..

sounds like vaccumm leak. try placing you hand over throttle body and check for leaks.

maybe something wrong with the manual idol controll screw on your throttle body?

Quote:

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Originally Posted by fatboyz39

sounds like vaccumm leak. try placing you hand over throttle body and check for leaks.

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Exaclty what happend to mine, one of the hoses on my Sk2 TB had torn, and it sat at like 1800-2000rpm then u put your finger over the hole and all was good,

mine hunts up and down but...
I baught a new O2 sensor any how, try to eliminate that...
Ill check the TB after i install new O2 sensor.

and only stock ecu i have is a auto B18B ECU..
Will that still throw codes??

foound the problem......
Stupid honda sold me the wrong TB gasket!!!!
And stupid me didnt check it before i installed it..
Grrrrr $110 for a O2 sensor i didnt need....

Quote:

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Originally Posted by locote

foound the problem......
Stupid honda sold me the wrong TB gasket!!!!
And stupid me didnt check it before i installed it..
Grrrrr $110 for a O2 sensor i didnt need....

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$110 from honda?

cant you get some from places like autobarn or supercheap?

Honda wants 550 for an O2 sensor...
I got it from a auto place for 110..
Still didnt need it but..

Im replacing some hoses today any how...

I had a feeling it was the gasket...a lot of the time a worn, broken or wrong gasket will do that. A lot of people think it's because of a faulty FITV or any of the other associated sensors (O2 sensor won't give u that prob, just shit economy and performance). ALWAYS check the TB gasket as well before buying new sensors...when replacing, make sure to WD40 it before fitting it so it leaves no leaks.

When dealing with hunting issues I always start by checking for air/vacuum leaks.

Start by running the car and using some brake or throttle body cleaner (anything that won't damage components but is highly combustible) and spray liberally and slowly making your way over the entire inlet tract with spray (paying special attention to [be more liberal with the spray] intake pipe and inlet manifold fittings).

If the idle changes (increases breifly) you should be paying attention to the area where you were spraying once the idle increased. Spray over the area again to pin-point the component/part requiring attention (leaking air) and then act upon the leak - fix/repair/replace it.

If no vacuum leaks are detected - then move onto further diagnosis.

The way this works is that the combustible spray gets sucked in (via the vacuum leaking component) and is 'un-metered' so the idle increases briefly. This gives you an audible/visual sign that there is a vacuum leak present - causing your rough running/hunting issue.