High Idle

[Jap_Muscle]

Do you mean this?

[Jap_Muscle]

So i tried turning that screw in the picture above but its very very hard to get to. How does one get to it when its under the plenum?

[wolverine]

Phillips head screwdriver. You just need to get one the right length.

[rondofj]

Remove the aac?

[Jap_Muscle]

Phillips head screwdriver. You just need to get one the right length.

the one in the picture is the old one i replaced and it was pretty tight wouldnt budge at all. But ill give it another go.

Remove the aac?

Its a pretty big job to remove the plenum to be able to get to the acc and remove that.

Besides i think it needs to be adjusted on the car so you can monitor the idle

[zebra]

You can get 90deg screwdrivers from repco/bunnings etc, might make it easier

[Rolls]

on my r33 intake I just simply put a screwdriver in it and turned it, what car/engine are you using ?

[Jap_Muscle]

You can get 90deg screwdrivers from repco/bunnings etc, might make it easier

thanks mate ill give that a go.

on my r33 intake I just simply put a screwdriver in it and turned it, what car/engine are you using ?

Is it a gtr rolls? because im running the rb26.

[wolverine]

They can be tight.

Some flog has murdered the head of the idle screw on the stagea.

[Don Dada]

Spray some Wd40 on it first....The rubber seal locks it in there pretty good.... And you wont damage the rubber

[R31Nismoid]

Guys just on O2 sensors - you don't really need em.

I drove to Syd & back with 340rwkw, 700kms to a tank and that was using no O2 sensors (just stayed off boost).

It's all in the tune for that type of thing (RE: O2/economy) and they certainly aren't required.

[joeyta22]

I took off my aac yesterday because it originally wasnt plugged in and when connected i was having high idle problems and the screw was stuck aswell.

This is in an r32gtr, there are 4 bolts holding the aac to the main body, all of them are fairly accesible and didnt require the intake plenum to be taken off. I was able to reach the bolts with a 10 or 12mm socket and have enough room to swing the ratchet. Taking off the attached line is a little harder as there's not much room and the clip can be a bitch to get a hold of.

From here i just put the body in a vice and used a phillips head attachment in my cordless drill with a high torque setting to slowly crack it.

In the end i ended up having the screw in most of the way anyway and found out that my pfc idle settings were set pretty high so i had a play with them and seems alot better but still not perfect (when i take my foot off the accelerator it drops down to 12000rpm and then slowly drops to 900rpm or so).

Edited October 3, 2011 by joeyta22

[mico]

+1 for no oxy sensors. i have absolutely nothing under the plenum and my car idles perfectly with a d jetro, 1000rpm

[Jap_Muscle]

Spray some Wd40 on it first....The rubber seal locks it in there pretty good.... And you wont damage the rubber

Thanks mate I'll give it a go

In the end i ended up having the screw in most of the way anyway and found out that my pfc idle settings were set pretty high so i had a play with them and seems alot better but still not perfect (when i take my foot off the accelerator it drops down to 12000rpm and then slowly drops to 900rpm or so).

What settings did you change exactly mate on the PFC?

[joeyta22]

Under SETTINGS --> REV/IDLE

F/C A/C - : changed to 1100 or so

Idle A/C - : changed to 890 or so

The other options are to do with when you have the air-con on, which i never do anyway so didnt really bother with them.

[DVS JEZ]

No 02 sensors is fine aslong as its beentuned for it.

Fuel economy is more in the drivers right foot

[Jap_Muscle]

Ill give it a go on the way to uni later today.

Heres a picture of what its set to atm.

Edited October 4, 2011 by Jap_Muscle

[Jap_Muscle]

AAC is fully wound in and no go for te power fc settings.

I think I'll try to replace the cold start valve.

[Craved]

unplug the IAC if it doesnt drop then pull it off and undo the 4 screws - i had hunting and high idle issues for a very long time and finally decided to pull the thing apart

turns out the tensioner spring inside the valve had broken, replaced it and perfect idle first start.

[Rolls]

Guys just on O2 sensors - you don't really need em.

I drove to Syd & back with 340rwkw, 700kms to a tank and that was using no O2 sensors (just stayed off boost).

It's all in the tune for that type of thing (RE: O2/economy) and they certainly aren't required.

I'd even argue you will get better economy without the O2 sensor if tuned appropriately as you can tune leaner than stoich.