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Where should my Idle be?

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Old 10-01-2003, 07:48 PM
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Default Where should my Idle be?

Just got a 98 z28, im very new to the ls1 motor i think imight be idling a bit high. I first would like to know what the normal idle is for these ls1 motors, because if its much lower than what im at now, im still under a warrenty so i can take it in. hopefully nothing is wrong, i just bought it.
thanks guys
Travis
Old 10-01-2003, 07:51 PM
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Default Re: Where should my Idle be?

Mine idles around 500 rpm in gear, about 600-650 in neutral or park.
Old 10-01-2003, 07:55 PM
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Default Re: Where should my Idle be?

what kind of difference is there between the A4's and the M6's idle wise, i should have mentioned i have a M6
Old 10-01-2003, 08:03 PM
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Default Re: Where should my Idle be?

It's set stock at 750 rpm.
Old 10-01-2003, 08:09 PM
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Default Re: Where should my Idle be?

mines 750. a/c on around 850
Old 10-01-2003, 08:30 PM
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Default Re: Where should my Idle be?

Im on my second LS1 and both started out at about 750 new but after a few thousand miles it seemed like they dropped to about 650-700.
Old 10-01-2003, 08:33 PM
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Default Re: Where should my Idle be?

I'm at about 45k, still dead on 750. If it doesn;t there's something wrong.
Old 10-01-2003, 10:54 PM
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Default Re: Where should my Idle be?

Mine idles at around 1100rpm. That seems much higher than the 750 stock. I know that tach isn't the most accurate, but that seems like a lot to be off. Is there anyway to bring it down without LS1edit?? Or does it really matter?? It doesn't seem to hurt much. BTW I have a 6-speed, just in case you didn't see the sig.
Old 10-01-2003, 11:32 PM
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Default Re: Where should my Idle be?

Well without tuning no. Unless its a sensor off that is making it idle higher. You could take it the dealership and tell them to flash the computer, someoen before you may have changed something.
Old 10-02-2003, 02:38 PM
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Default Re: Where should my Idle be?

zeequick, im having a similar problem. im not idleing quite that high, im steady at 900 rpms. I'm taking it to the dealer in a few days to make sure to get it fixed. Hopefully i can do this really soon, ill post when i find out what it is perhaps it would help you out.
T
Old 10-02-2003, 08:25 PM
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Default Re: Where should my Idle be?

mine idles at 800, but the stock tach indicated 1100...

Predator, EFI live, and Tech 2, all say 800..

wonder what one i belive ... 800.

Ryan.
Old 10-02-2003, 08:55 PM
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Default Re: Where should my Idle be?

My 01 M6 is set stock at 800RPM,Checked my engine parameters w/LS1 edit and it was 800RPM.
Old 10-03-2003, 03:01 AM
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Default Re: Where should my Idle be?

zeequick, im having a similar problem. im not idleing quite that high, im steady at 900 rpms. I'm taking it to the dealer in a few days to make sure to get it fixed. Hopefully i can do this really soon, ill post when i find out what it is perhaps it would help you out.
T
chances are its just 1-200 rmps off because the stock tech is crap...
Old 10-03-2003, 05:08 PM
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Default Re: Where should my Idle be?

My stock tach reads 850.
Old 10-04-2003, 03:13 PM
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Default Re: Where should my Idle be?

I have a 98 and mine reads 1100 too. Nothing to worry about.
Old 10-06-2003, 09:45 PM
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Default Re: Where should my Idle be?

1100 isn't so bad. Mine idled at 300 for a bit. Then I figured out that some dirt or dust had gotten into the plug for the MAF connection and problem solved once I cleaned it out. I've had the problem creep back on me once, I'm still thinkin about some electrical contact cleaner on the MAF wires.




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