H3 Idle rpms help!

[Sneakysilver]

Ok so I have noticed my idle is a tad low. Sits around 500-600 and causes my oil light to come on, just had oil changed a month ago and never has happened before. Could it be the oil is too light or my pump losing pressure at low rpms?

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[humvee]

My i5 idles at 600, I think that is standard. Maybe you should be looking for other issues..

 

[954paulo]

Yup 600 and 700 fluctuates between the two


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[zackcrum]

Mine idles the same 600. It has a weird vibration that goes away when I rev up to about 800. Anyone know what this could be?

 

[Corey Barnes]

Mine idles the same 600. It has a weird vibration that goes away when I rev up to about 800. Anyone know what this could be?

Clean your throttle body real good! It'll take care of your low idle vibration


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[digglesworth]

Anyone know if a pcm tune keeps the idle at the stock rpm or do they set it to something else?

 

[humvee]

They can play around with it if you ask them to. I left it as is.

Could someone share possible advantages to raising engine idle rpm?

 

[zackcrum]

Thanks Corey ill be sure to do that this weekend!

 

[jakesz28]

I bumped my idle up 50 or 75 rpm in a few spots.

I have to look at the tables but in a few spots the stock file is 550 or 600 rpm.