Help diagnosing the problem
My 1990 Oldsmobile Delta 88 Royale 3.8 liter V6 so when it's in park I have amazing throttle response but as soon as I put it into gear I have to hold my foot on the brake and the gas at the same time and it acts like it wants to die out I have already changed the mass air flow sensor the spark plugs spark plug wires and coil pack just need help troubleshooting what's wrong with it