Normal Idle speed? How to Adjust?

[frozen]

My car idle seems extremely low... as in 400 - 450rpm, and at times lower... sometimes almost to the point of stalling after the revs go back down. I noticed this severely yesterday when i actually used the air conditioning, but it does still idle quite low... or is this normal.

How can i adjust the idle to be slightly higher, im assuming there is a screw on the throttle body or something?

Thanks... I searched first but found nothing useful

 

[Sydo]

I would suggest an ECU reset - as the idle is no doubt controlled electronically.
Disconnect your battery for at least 5 minutes.
Reconnect.
Start engine (do not touch the throttle).
Let the car idle for a few minutes.

Drive as normal.

If symptons persist, please see your doctor.

 

[naughtika]

I bet you did an ecu reset...

give it a day.. it'll get used to it..

 

[Sydo]

I bet you did an ecu reset...

give it a day.. it'll get used to it..

Also very likely. They do tend to idle slowly after an ECU reset.

 

[BuzzPuppy]

I thought that idle was 650rpm judging by the sticker on the inside of the bonnet? Yep, definitely an ECU reset that will right itself eventually.

 

[JRVR4]

Yeah mine was the same dude, i thought it was something to do with the heat we're having down in SA at the moment, but talked to a mate and did what these lads are suggesting...disconnect the battery terminals, foot pressed down on the brake for round 30 seconds to make sure all the powers gone then hook the battery back up, start it and it should eventually find a nice idle level...mines at 1,400-1,500 which i think is normal. If that doesnt work just go easy on the climate control.

 

[Guest]

mines at 1,400-1,500 which i think is normal.

1,400-1,500 seems pretty damn high to me. My Legnum idles at 800rpm without any drama what-so-ever, even with the air con on. Even the GTiR with it's MAP sensor and Haltech E8 idles at 1,000rpm. Anything higher than that seems a little out of the ordinary.

What is everyone else getting?

 

[gilly]

Pretty certain mine is as high as Justins, around 1400rpm.

 

[JRVR4]

Yeah you have a point, i was just happy it wasnt borderline stalling anymore haha. Might have to do the old ecu reset again and see if it changes

 

[JRVR4]

Oh but now simons backing me up! Hmmm confusing.

 

[frozen]

hmmm i think whats happening is the last time i ECU reset, i had it running a while with heavy overfuelling... and bad idling... when i had my pipe off and was 'broken down'

 

[Guest]

If you have idle issues then check the idle screw and play around with it as after installing the bigger exhaust mine started to idle lower and even stalled.
The idle screw on the leggy is a few centemeters from where the air goes into the throttle body.
There is a small rubber cap and once removed with a flat head screw driver then you just turn it at half turn intervals till you see the idle go up to the propper 650.
Hope this helps guys.

 

[VR4Rocket]

Mine idles at around 600 or so and I thought that was kinda high....I am obviously wrong...

 

[Guest]

wow, it shouldnt idle at 1400-1500 thats way too high, what every one is saying with 650-800 thats about right but 1400 is massive. try ecu reset or idle controll screw as adam said.. if your idle is going up and down every few seconds its a idle control solinoid but i doubt its that.

 

[bradc]

they normally start at 1500rpm or so, then drop down to 600-700rpm once they are warm.

do a search for idle stepper motor on cvr4 and you'll find heaps of results about this problem.

 

[gilly]

they normally start at 1500rpm or so, then drop down to 600-700rpm once they are warm.

once again Brad is correct! I went and tested mine tonight, started at about 1350rpm, went for a drive round the block, by the time i returned, at idle, it was sitting on about 650rpm.

 

[Dr_Josh001]

I find mine idles at around 800-900 with the climate control on and around 600 normally.

Bet you're loving your aircon right now gilly!!

 

[Guest]

when cold dont most cars rev high then settle after a few mins? anyway good luck fixing the problem.

 

[Guest]

mine starts with 1500-1750 rpm then slowly going down to around 750 rpm

 

[Guest]

what to do iif you have 900rpm with warm engine and cannot adjust the idle screw anymore? new idle stepper motor?