having so engine issues if anyone has some input it would be greatly appreciated. ok, engine seems to stall on me. I take the air filter off and and filter arm and run the engine. As the engine runs (with air filter off) it will start to idel rough. At that point the engine will suck a huge amount of air in and then idel ok, with proceedure repeating itself. could it be a sensor that is not working correctly with the calculation of air and gas mixture. Also when I put the filter on the engine it will (all of this while in park) run rough and stall. this is an 89 350 5.7 TBI engine. could it be the mass air flow sensor??