Cold And Hot Idle

[poeticjustice88]

Hey everybody. I have a question concerning my idle

When cold, so first start in morning it idles at around 1100 for the first minute and slowly climbs to about 1800-2000 rpm to warm up the engine. When warm it drops down to the allocated 800 rpm.

My question is, is there any way to lower the high revs when cold to say 1400-1500 rpm and keep the 800 rpm when warm idle?

I ask because it takes about 10 mins of driving to get it to the warm idle. Sometimes I can make it to where ever I need to go before the idle drops down. But as I live on the Gold Coast, there are a lot of traffic lights in between my home and work, and I have noticed I am getting a lot of weird looks when sitting at the lights with my car idling close to 2 grand as it is rather loud. The last thing I want is to be sitting at the lights and have a police car rock up next to me while my car sounds like I am staging at a drag strip.

I just want to have cold idle at around 1200 rpm and keep my warm idle at 800 rpm. Is there any way to change the cold idle limit with out changing my entire idle limit?

RB20DET, not sure if silver or red top as I do not know how to tell. It has the ECCS manifold but both came it with that. Is there any other way to tell ?

Kind Regards,

Michael

Edited June 26, 2013 by poeticjustice88

[enka]

same problem with mine, just happened recently, dead cold start max jumps to 1.9

idle stuck at .9-1

there's definitely a problem here, some says it's vacuum leak, loose gaskets, air leak or aac

i'll be waiting for some answers too

[ZRBE]

Oh, make that 3..

Mine revs at about 1800 when cold.

And 700 flat when hot and holds that nicely.

Really loud at 1800 as well.. Think my exhaust is adding a bit to that

Also an RB20det

Edited June 26, 2013 by Zrobe

[Sinista32]

Take it to your tuner. Most good tuners will keep your car overnight after tuning and do the cold start (adjusting IF necessary)

Type of ECU can make a difference. After disconnecting the battery for any reason start it from cold and let it run for 10 to 15 so it can RE-learn.

Above is just my experience.

I'm not a Tuner so Jez and the boys will have better advice. .

Edited June 26, 2013 by Sinista32

[poeticjustice88]

I have stock standard RB20det ecu, not an aftermarket. Could it still be an ECU tune issue, or just a matter of adjusting the AAC and air reg under the plenum?

[C4a0s]

my personal experience with my SR20DET last time was the Idle valve thats dirty if the condition comes suddenly without adjustments to the ECU, else its the ECU doing its cold temp compensations that needs to be checked.

hope this helps

[blind_elk]

RB20DET, not sure if silver or red top as I do not know how to tell. It has the ECCS manifold but both came it with that. Is there any other way to tell ?

One, the top of the engine has red rocker covers, on the other the top of the engine has silverish rocker covers. (Oh, and ECCS is found the silvertop, redtop has NICS)

[poeticjustice88]

the red top had both ECCS and NICS, and my rocker covers are black. Next idea ?

[StevenCJR31]

paint your rocker covers silver. .