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cause if its idling at zero rpm the motor is off ...
It could be a dirty air filter or a dirty throttle body.
the throttle could be stuck! pop your hood and see if its pulled back!
The most common cause of the whistling in a 2003 Impala is a vacuum leak. Any of the lines under the hood could be causing the noise.
probably bad TPS, or IAC sensors
Very vague information. Could be the main jet in the carburator.
There could be a vacuum leak somewhere causing the engine to idle too fast. It would also cause the engine to run too lean and possibly burn a piston.
Listen and look for a vacuum leak. Could be anywhere.
Timing belt could be bad and could have jumped a tooth or you need a toon up.
Could be clogged converter in the exhaust system..
idles at 3000 will not go down 1993 grand prix gtp
My 1990 idles at about 850 and with the ac on 1100