2005-2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.

bad to have idle TOO LOW?

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Old Apr 15, 2008 | 07:56 PM
  #1  
GTstangB.F.D.M.'s Avatar
GTstangB.F.D.M.
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Default bad to have idle TOO LOW?

hey guys..

i just adjusted my tune today and changed my nuetral and drive idle from 760 - 540.. when idling, it doesnt seem to be having a hard time stay awake, but can this be bad compared to a higher idle?
Old Apr 15, 2008 | 08:23 PM
  #2  
RojoDojo's Avatar
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Default RE: bad to have idle TOO LOW?

Tell you the truth, I don't think it's going to be detrimental to anything. I prefer mine a notch higher than the stock w/ the 5 speed. Going a few notches either way isn't going to hurt anything.
Old Apr 15, 2008 | 08:24 PM
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Default RE: bad to have idle TOO LOW?

you can definitely go too low though. not sure about 560, i would want it at stock or higher
Old Apr 15, 2008 | 08:37 PM
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Default RE: bad to have idle TOO LOW?

why that low, leave it at 750+........
Old Apr 15, 2008 | 08:41 PM
  #5  
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Default RE: bad to have idle TOO LOW?

why that high?..
Old Apr 15, 2008 | 08:53 PM
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Default RE: bad to have idle TOO LOW?

Still don't get why you would want it lower though? I guess it's ok where its at as long as it doesn't sound like it's going to die

Mine is at 1k since I like the way it sounds
Old Apr 15, 2008 | 10:49 PM
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Default RE: bad to have idle TOO LOW?

I have an 06 V6 that was idling fine until I got to about 20,000 miles and it dropped on it's own to about 550 rpm's. Does anyone have any idea what might cause this? I took it to the dealer and they swapped out the throttle body which gave it a lot more pep but did not fix the low idle. I took it back again and they told me that it was fine and everything was set to the factory specs.
Old Apr 15, 2008 | 10:53 PM
  #8  
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Default RE: bad to have idle TOO LOW?

My car had a lot of issues with RPM stability when idling. Ended up being a cracked TB.

I have mine at 850 (Brent put it there).
Old Apr 16, 2008 | 08:12 AM
  #9  
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Default RE: bad to have idle TOO LOW?

I know it is not good to let a car idle to low because of cam lobe wear. Expecially for the guy's who have installed a good high performance cam with a lift close to 550-600. I've seen guy's do this with Harley's and cars alike to try to get the more thumpty tum sound only to wear the lobes down.
Old Apr 16, 2008 | 10:00 AM
  #10  
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Default RE: bad to have idle TOO LOW?

Anyone know what the Ford spec is for this. Seems like it's around 750.

My tune bumped the idle up to 850, which I found annoying and wastes gas. I dropped it as low as 650, but am now back to 700, which seems nice.



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