Hunting/idling

[vexed]

hey guys, i got a r33 gtst witrh a power fc and its hunting/idling strange, i checked for possable air leaks but couldnt find any. the probelm is more noticable when the car is cold, but keeps idling funny even afetr its warmed up

i think the computer needs a retune, what do u guys think? and if so, can any1 suggest some1 in sydney

cheers

[Steve]

Do you have a hand controller?

[shif_tea]

could be dirty afm or a fair few different things

[paulr33]

what does the sensor check screen show on the hand controller when the idle flucatates?

any of them flashing or going on and off with the change in idle rpm?

did you buy the powerfc new or come with car and has been tuned by someone else?

what values do you see for airflow, wtr-temp, volts and monitor

[vexed]

yeah its got the hand controller but i have no idea how to tune the thing

[Steve]

vexed, this may sound strange, but try unplugging the hand controller - long shot, but it worked for me, after months of trying to figure out what the hell was causing a fluctuating idle.

[vexed]

cool, thanx mate. ill see if the handcontroller gives any wierd readings, if not ill discoennct it and see what happens. last resort ill cough up $700 and get it retuned

btw whats a afm cost?

[vexed]

btw this is probably a dumb question, but i thought when u have a power fc u dont need a afm :S

[R31 POWER]

vexed, this may sound strange, but try unplugging the hand controller  - long shot, but it worked for me, after months of trying to figure out what the hell was causing a fluctuating idle.

So i'm not the only one to notice this :cooldance i just dont get why apexi would do this?

[netrati]

Yes you still need a AFM with the power fc, unless it's the D-Jetro version. Does the car run okay besides the idle?

[vexed]

yeah the cars fine, pulls right up to redline

[vexed]

lol i toopk out the hand controller and now its fine :S

[voona]

wtf.

[Steve]

I am glad, as R31 POWER, that I am not the only one...

[paulr33]

how odd, ill add it to the faq

is it a brand new pfc and hand controller kit

x00-n001 ?

[treo]

unplug your o2 sensor while idling and see if it idles better, could be your o2

[netrati]

Or just turn the O2 feedback off.

[vexed]

i know its freaky but it worked :S. does any1 knoww aht the underlying problem is? when i get some money ill take it to get remapped and see what the problemn was and post the answer