It doesn't happen all the time, but when it does it sounds like it is accelerating but the vehicle doesn't increase the speed. Is that a sign of transmission failer
while driving, sometimes when accelerating vehicle doesn't inscrease speed. on 2002 Acura MDX
It could be a sign of transmission failure. Is there any check engine light on? Maybe you need a tune up to improve it's drive-ability. If it's an electronic gas pedal, that is another component that should be checked for failure. We can inspect your vehicle and credit your diagnostics towards your repair.