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Are my rpm's too low???

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Old 03-23-2007, 07:17 PM
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Mine doesn't so much shake as vibrate. Just a little constant vibration. The whole car makes a vibrating noise too. It's a little lower idle than yours though (~475 rpm).

When you say to adjust the idle, do you mean with the little idle scew on the throttle body? Or with a tune? Or what?
Old 03-25-2007, 01:32 AM
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Originally Posted by Speedmonster185
Mine doesn't so much shake as vibrate. Just a little constant vibration. The whole car makes a vibrating noise too. It's a little lower idle than yours though (~475 rpm).

When you say to adjust the idle, do you mean with the little idle scew on the throttle body? Or with a tune? Or what?

Yea....i'm curious as to how to do this myself
Old 03-25-2007, 03:01 PM
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Mine idles at 900. My friend's 93' M6 idles at 500 too, but it has 180K miles, and I'm sure it hasn't had a tune up since 100K.
Old 03-26-2007, 03:23 PM
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Ya i can raise my idle with my HPtuners, and ya you can mess with the TB and raise the idle that way to .
Old 03-26-2007, 07:52 PM
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Originally Posted by SSpdDmon
The stock tune in the PCM will tell A4's to idle at 550 for all coolant temps greater than 160*F. If the A/C is on, the desired idle speed is 650 to compensate for the extra load of the compressor.
Bingo! IIRC it was higher than 550 for certain years but some F-body years are 550.




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