'91 mustang gt 5.0--power loss in drive

[strebin123]

my 91 mustang's gas pedal feels like it has less tension than it did. Also, car accelerates like normal until i reach about 15 mph, and then when i push pedal closer to the floor, there is very little power. in park it seems to be normal (sounds good), except the pedal still feels looser. in park it seems to have the power it should--i can rev it up with brake on, and the tires will spin. it also looks like the fan blade has rubbed the shroud which i didn't notice before.

[taillight]

You might have a broken motor mount and the engine is shifting.

[strebin123]

I cant see much movement the engine only lifts about an inch when accelerating. Could it still be motor mount or any other suggestions? thanks

[taillight]

Yes or something shifting around the throttle cable.

[strebin123]

Thanks, it was a plastic clip where the throttle cable meets the t.v. cable i think its called. One cotter pin and good as new.