Wednesday, May 25th, 2011 AT 10:33 PM
I have a 2005 Nissan 350Z 6 speed manual. Today while driving on the highway the car suddenly slowed down and would not accelerate. I pulled over and when I came to a stop it stalled. I started the car back up again and tried pressing the gas pedal and it bogged down and stalled again. The car will start and idle (idling is rough). I had not had any previous problems however lately I have noticed a slight knocking sound when sitting and idling. I am thinking possibly a bad throttle position sensor or a bad mass air flow sensor. Any suggestions? Trying to avoid bringing it to the dealer for diagnostics.

