i have a 94 camaro z28 with a lt1. when i start it up it idles at 2000 then falls down to 1500 when in park and neutral. in drive it idles at 1000 rpms. does that sound high? this is my first camaro. most cars idle like 600.

 

Check the throttle blades to see if they're sticking. I forget, but I think stock idle for an A4 is around 800.

 

It should idle lower....

 

Check for vacuum leaks.

 

Stock idle programming for the A4 is 650rpm in neutral and 550rpm in gear. In very cold weather (coolant temp at 3*F) the cold start idle speed in neutral is increased as high as 1,200rpm. And, the stock tach typically reads 100-200rpm higher than actual rpm.

Definitely idling too high.

 

vac leak or maybe IAC valve (idle air control valve)?