I have a Chevy Blazer 02. It's been stalling, hesitating, power surging, and sometimes having problems starting back up, but it doesn't do this all the time. We have changed the fuel pump, mass air flow sensor, camshaft position sensor, crankshaft sensor, gas cap, distributor cap, spark plugs, spark plug wires, and the idle control sensor.

 

1. Do you have any codes?
2. What are your fuel trims?
3. You need to perform the fuel pressure leak down test
4. Do you have a recent compression test?

George