About idle speed

[novemberr]

Hello,
My 2012 Denali is 600-620rpm at idle, and fluctuates sometimes. Is this a bit low?
What is the factory setting for idle speed? If tuning it up to 700rpm, will there be a benefit?
Thank you for your advice.

 

[swathdiver]

Normal. Some tuners raise it to 650 to avoid stalls after certain parameters are altered. Any higher will just use more fuel than necessary IMO. Anyone else?

 

[novemberr]

If the factory rpm is already at 650, I probably need to clean the throttle body. How could I find out the default rpm?

 

[BG1988]

600-610 RPM is common

 

[Doubeleive]

600 is normal

 

[novemberr]

Will increasing to 650 or 700 hurt the engine in long run?

 

[petethepug]

It will flux. The BCM is handling what the alternator is loading and the a/c fan(s), power steering, headlights + brake lights, compressor, etc, are pulling loads too. I need to buy a Tech 2 scanner too. It’s the only way to get into the mind of this machine to see why it’s doing these things.

Sent from my iPhone using Tapatalk

 

[Derick]

I noted today that my idle was at about 560 after fully warmed up.