It could be a vacuum leak. The gasket under the throttle body was known to let go and create a large vacuum leak causing engine to idle high.
2004 chevy cavalier is idling to high
Perhaps throttle plate is stuck - try to free with a screwdrive in the throttle body
Timing to high / advanced to far. Idling to fast. This can cause that problem.
it is idling high to warm up.it is dying because the choke is shutting off before it has warmed up
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Vacuum leak.
you most likely have a horrible fuel sensory causing your car to be bad at idling. also you may hvae reved your engine to hard and that is causing it to idle.
Throttle plate stuck?
clean your injectors.
Assumingly you're referring to the Center High Mounted Stop Lamp
Idling too high?
iac or tps