ok my car idles at 1000. the scanner says desired idle speed is 800. ive got no codes and nothing is out of line. but should my idle speed be down to 800 or is 1000 fine? thanks trey

 

Mine has always idled at just a smidgen over 900...

 

Mine has always idled at just a smidgen over 900...

 

Mine too, but I think specs say 800.

 

How much is a smidgen ?

 

About the same as a tish

 

The stock programming sets the idle speed at 800rpm, fully warmed up coolant. Mine idled there, +/-25rpm, consistantly. Of course that's reading it from the PCM, and not from the stock tach, which typically read 900-950rpm.

While checking the idle with a scanner, check the IAC counts. They should be in the range of 20-40 counts, varying slightly to pull the idle back to 800rpm. If the IAC counts bottom out at "0" before the idle comes down to 800rpm, you might have the TB blades open too far, or a vacuum leak.

 

maybe your tach is off.. just a thought =/

 

thanks fred. i was wondering what my IAC count should be. ill check it out and see what happens. as far as the tach the PCM is reading 1000 and the tach shows exactly that. thanks trey

 

Mine Idles right at 1000 cold and when warm.

 

It should go down to about 800rpms when warm

 

Here's the tables from the PCM:

COOLANT----- A4-------A4----------M6
TEMP----------IN---------IN
deg F--------GEAR----NEUTRAL

-40 degF-----800------1200------1200

-19degF ---- 800------1200------1050

3degF---------800------1200------1050

24degF-------800-------1000------1000

46degF-------800--------950-------900

68degF-------800--------900-------900

89degF-------800--------900-------900

111degF------800-------900-------800

132degF------750-------850-------800

154degF------650-------750-------800

176degF------550-------650-------800

>176degF-----550-------650-------800

 

So if it doesn't, what does that mean?

I bought the car 4 years ago like that and it's never changed

 

As far as I know, the factory tachometers usually read about 200 RPM's higher than the actual RPM's. My tach shows 1000 at idle but when hooked up to a scanner it's actually idling at 800. Just some food for thought.