Take it to A shop and have them clean the intake and throttle body housing.
Could be clogged converter in the exhaust system..
I have python tips and it idles off beat and sometimes dies.
Manual or automatic transmission?
idle control valve faulty or needs cleaning
If everything has been checked, like tune-up, it could be the fuel injectors, or the wiring going to them. when idleing, wiggle each connector at the injector to see if makes a difference.
sounds like you have a leaky intake manifold
Replace the plug wires
600 to 1000 revolutions per minute (RPMs) is the typical average for idle.
idles at 3000 will not go down 1993 grand prix gtp
My 1990 idles at about 850 and with the ac on 1100
Cinnamon Idles was born on October 26, 1975, in Chicago, Illinois, USA.
The throttle plate in the throttle body may be stuck and needs to be freed up and/or lubricated