Check the idle, if its fluctuating or falling than nomal. Usually, low idle causes stalling when coming into stops. Low idle, usually is due to dirty throttle, a leak in the vac hose, or a damaged MAF or IAC motor.
Look and listen for a vacumn leak under the hood.
low idle and uneven idle
I have found that replacing the PCV valve AND chasing down any exhaust manifold leaks usually does the trick.
Vacuum leek
What causes a car to idle good and run rough when you give it gas?
check the servo. it might be wet or loosely connected
the choke is on
That's just a typical GM oil gauge.
Fast idle motor is not working. This is allowing the idle to fall below the threshold of what it should be when the A/C is on.
brendalee
Mr. Potato Head