It's Soo Hoo like Yoo Hoo
i think this is all pretty normal for a 13yr old car.. hesitation how? like it isnt pushing hard? most likely b/c it isnt warmed up yet.. for the lunging forward, its probably your engine mounts(dogbone, front, tranny, etc) what do you idle at when u first start the car? upwards of 2k i would imagine.. that would be the reason for your lunging.