That's typical when air enters the engine that didn't go through the mass air flow sensor, then the Engine Computer doesn't know about so it doesn't request enough fuel to go with that air. Check the tube between the mass air flow sensor and throttle body for leaks or cracks. They often flex when the engine rocks during acceleration causing those leaks to open up. Also look for leaking vacuum hoses or intake manifold gaskets.
Sunday, October 21st, 2012 AT 1:50 AM