Ok first off, i have a 2002 gt auto mustang. what are the rmp's suposed o rest at durring idle? well mine rest at 500. Now when i aply the breaks hard at a rest the rmp's go even lower, and when i trn m wheel the rmp's drop a little. But when i am driving and let off the gas the rpm's bounce a good amount? And when i floor it, its really slow on the take off.!!! its really buggnin me, what could it be. Oh and my car smells if i excelerate hard for a while... thanks