Im having a problem determining whether its the throttle body again (just replaced it in April)or if it is now the APP. One shop said my new throttle body was bad...Said engine powering down..and it did! but this time there were a couple extra symptoms. Including eating up all my gas and then... after starting the car (having to push on the accelerator) the shifter button seems locked up.. if I dont press on the gas while starting... if anyone can tell me what step i need to take to figure this out... OTHER THAN REPLACING THE TB.. AGAIN. ?