Just wanted to post that my Infinity G35 coupe that sounded as if it was about to stop running all together, is now fixed and better than ever. After reading so many post with these same symptoms, I just wanted to follow up with my success for all those looking for a solution. After throwing a couple hundred dollars at this car in sensors, batteries, and various other parts that I believed were easier to replace, I manned up and replaced the (to me intimidating job )fuel pump. I only took about an hour and now the car runs better than when I bought it. This is the pump I bought on ebay for 30 bucks exact OEM fit, made in Japan and resistant to fuel carnage (Alcohol) hope this helpsKEMSO 340LPH High Performance Fuel Pump for Infiniti G35 2003 - 2007

 

cool. thanks did you have any code thrown?

ya fuel pumps are not too bad. i have changed a couple of them in my driveway.