Adjust idle on R33

[Sambo33]

Hi all, ive done a search on this but i cant find anything definitive. What is the recommended way to set idle speed on an R33 GTSt? I notice that under the bonnet it says 650RPM, but mine sits just below 1000RPM all the time. its not a huge problem but something i would like to correct.

thanks in advance

sam

[gexiaowen]

depends on the mod

mine has an aftermarket bov so it sets around 1000rpm just to prevent it from stalling

[Sambo33]

ive still got the stock plumb-back bov in place, the only mods i have are FMIC, straight thru 3" exhaust, bleed valve set to 10psi and a pod filter. yeah i figure it must be because of these mods that it idles high, i went for a ride in a stock R33 the other day and it idled nicely at about 700RPM.

[paulr33]

hi guys, my r33 has powerfc, cooler, exhaust, boost controller, pod filter and it idles at 750rpm perfectly. no problems whatso ever. i dont see why those mods would make your idle different unless you have a leak or mismatched something. check for leaks, something mismatched (like bad sized cams or something, or cooler too big) and check the airflow meter as well. also try an ecu reset? even on stock ecu i was idling perfect before powerfc went in

[Sambo33]

Anyone??? All i want to do is lower the idle. i have heard of using the TPS and also something at the back of the plennum. All i want to know is what to adjust?

[paulr33]

have u tried ecu reset?

[Sambo33]

have u tried ecu reset?

yep tried that last weekend. that is done just by disconecting/reconecting the battery right?

[Jetdat]

disconnect the battery and stand on the brakes and turn your headlights on for about 30 seconds or more so that all the charge from the ECU is drained..

[justin911]

I think theres something called the AAC valve ?? its near the TPS (I could never find it.. gave up looking seems I wasnt gonna play with it in the end).

U can adjust it with a philips screwdriver to change the idle.

If you search around for it there should be some pics of where it is exactly etc.

[siksII]

I think theres something called the AAC valve ?? its near the TPS (I could never find it.. gave up looking seems I wasnt gonna play with it in the end).  

U can adjust it with a philips screwdriver to change the idle.  

If you search around for it there should be some pics of where it is exactly etc.

its on the back of the intake manifold on a r33

[Baz]

There should be a screw on the throttle plate that adjusts base idle. If you cant find it follow the throttle cable and it should lead to where the throttle plate is and there should a screw there as well.

[mass_iv]

yeh mate there is a small screw looking thing at the back of the plenum, just muck around with that it will change the idle.