In the morrning when the engine is cold the car will idle high and then low (surges) to where the car will stall. I will keep my foot on the gas untill the car warms up and it runs smooth without any trouble. I had the fuel pump replaced, the timing advanced, the rotor and the fuel-air sensor changed and it still is doing the same thing. I also had the gasket changed on the throttle body. Please help!!!