Intermittent Stalling - Fuel Pump?

89 Burb with 180k miles. The burb stalls out between 30 seconds and a few minutes whether it is just idling or driving down the road. First thought is the fuel pump but after the engine stalls I can hear the fuel pump making a buzzing sound for a few seconds then it stops. I have checked the feul pump relay and the injectors and they are working. The fuel pump was replaced about 4 years ago or about 20k miles. Could it be distributor problems? Fuel filter was replaced about 5 months ago.

Thanks 00Buck:banghead:

89 Burb with 180k miles. The burb stalls out between 30 seconds and a few minutes whether it is just idling or driving down the road. First thought is the fuel pump but after the engine stalls I can hear the fuel pump making a buzzing sound for a few seconds then it stops. I have checked the feul pump relay and the injectors and they are working. The fuel pump was replaced about 4 years ago or about 20k miles. Could it be distributor problems? Fuel filter was replaced about 5 months ago.

Thanks 00Buck:banghead:

First step would hook a fuel pressure gauge up and tape it to outside the windshield or mirrow and drive it un till it stalls and watch fuel pressure.
Also when it stalls check for lose of spark to 2 or more spark plugs.
Post back what you find.
MT