96 a4, once warm, it idles at around 600, seems low, my 95 m6 idles at 1000, just seeing if the auto is out a bit, and where is the idle speed adjustment screw?

 

That is normal.. A4 idle around 550-600 M6's are around 800-900 Its how there are programed from the factory.. Adjusting the screw wont help.. The IAC valve will just compensate for it..

 

my A4 idles right on 1000 RPM. all the time.. do u have missfire on your A4?

 

Factory programming, coolant fully warmed up:

A4:
-In neutral: 650rpm
-In drive: 550rpm

M6:
-All: 800rpm

Remember, the factory tach seems to read 100-200rpm higher than the actual idle speed. A "scanner" will let you read the correct rpm from the PCM.

 

My 97 Z28 runs at 700rpms!

Chas

 

A4 or M6? Reading from the tach, or from a scanner on the PCM?

 

with tuning my a4 is 900-1000 via datamaster

 

my 97 A4 formula idles right on 1000 rpm... in N and D. all..

 

Its a auto and reading on the tak, i will recheck it just to make sure.

Chas

 

I can only tell you what the stock programming is.

 

my point is, do u guys think something is wrong with my car or it is better for the car? since l got the car, it is like tat.. also sometimes on park it idles 1200 RPM. and goes back to 1000 RPM.

 

Has the PCM been reprogrammed for any reason? Hard to tell from your signature what the car has in the way of mods.

IF its idling at anything higher than the stock programming, there's a problem. Higher idle does not help anything. Just helps heat up the tranny fluid. You need to get a scanner on it and see what the idle air control (IAC) motor counts are. If they are at "0" and the idle is 1,000rpm, you've probably got a vacuum leak, or the IAC motor is deceased.