EGR problem
a vac leak
Carbon buildup can keep a motor from firing and cause an engine to stall.
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Is your clutch bad or wearing out ?
There are a couple of reasons a 1991 Chevrolet Caprice may stall out. The car may need a new distributor cap or the plugs may need changed. A mechanic will be able to determine the causes of the stalling car.
yes..a bad oxygen sensor can/will make your car stall at idle speed
You can make a motor stronger by always checking the engine, checking the oil, and brake light functions. Makes sure that you drive safely and do not stall it.
If it works but not on all speeds or is almost making the car stall at idle if you turn the a/c on at a light Than its probably the fan motor resistor pack its $25-$30 at autozone and real easy and fast to replace.
no but in most late models your check engine light come on
throttle position sensor located in the top part of the carb
The AC pump is bad. When the AC is turned on the pump tries to turn, because it is bad the extra strain on the motor causes it to stall. Be carely this can break or through a belt. In short its like putting a "brake" on your motor.
Check the Park Avenue EGR valve for a clog. A clogged valve can cause a rough idle and stall at a light.