== == I had the same problem with my RX. It ended up being something simple. I was installing my new intake when I decided it would be good to take off the MAF (Mass Airflow sensor) so I could bolt the intake to it easier I ended up Messing up the harness and when I started it. It idled poorly then shut off. Basically I went to the junkyard and got the whole MAF because its almost impossible to take the electronics out. The thing cost me about 45 to 50 bucks in the junkyard. I suggest you do the same. Its easy and relatively straightforward to install and my cars been running great since.
check your timing & up your idle a little
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!
I believe it is in the casting on the intake manifold. I would have thought 1432. It backfires or stumbles or idles poorly when it is wrong, so you know immediately.
NO IT CANT CAUSE A VAC. LEAK. BUT IF ITS A MEC.FUEL PUMP I HAD THE SAME PROB WITH MY 305. I CANGED THE PUMP AND SOLVED THE PROB.
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.
Timing belt could be bad and could have jumped a tooth or you need a toon up.
Listen and look for a vacuum leak. Could be anywhere.
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.