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.
First, check the fuel filter. It could be letting just enough fuel through to start you going but not keep you going. Has you're catalytic converter ever been replaced? As they get warmed up they can shut down the exhaust system. How about your coil. When it gets warmed up it can stop working.
throttle position sensor located in the top part of the carb
EGR problem
a vac leak
crank sensor is bad... when it gets warmed up... it'll send bad data to the spark device and will stall out
It can be several things, the vehicle speed sensor could be out or wires disconnected. Does your car stall out when going slow? If it does it's the v.s.s. that is located on the end of your tranny on the drivers side.
well you should let it warm up for a minute I know my dirt bike will stall if I don't let it warm up but cars not so much
1st try checking the EGR valve. If the EGR valve is sticking or leaking it can force too much air into the air/fuel mixture causing the motor to stall out.
A car might stall when shifting from park to reverse if the idle is set too low. It is also possible that the engine stalls because it is not fully warmed up before shifting from park to reverse.
Your Chevrolet Cavalier 97 might stall when going downhill because it has a bad fuel filter. It could also be the spark plugs misfiring.