Questions & Answers for: GMC Sonoma engine is surging

surging @ cruising speed, running rough @ low rpm, and doesn't want to idle. Chk Engine light is flashing 32. what do i need to replace, the EGR valve, the solenoid, or the temperature switch? Am I on

...surging a bit. When I turn it off it will not re-start without starter fluid. With the ignition key turned on without trying to start the engine you should hear the fuel pump run for a few seconds. ...

engine slows and surges with no chage in accellerator posion changed egr cleaned pvc changed fuel filter checked for vacume leaks. You may need a new fuel pump

...engine surge have a twenty minute commute. some days hardly a surge at all. then some days its every time i stop for a light. find it mostly surging on the high rpms right before changing gears. ...