Fuel pump or not

2005 INFINITI QX56
157,000 MILES
Avatar
MICHELLE ALBITAR
  • MEMBER
  • 1 POST
Car stop while driving starts up later .
This last time it started but shut off. is it my fuel pump or bad gas or need cleaning?
Aug 3, 2017 at 12:33 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
STEVE W.
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 15,146 POSTS
Shutting off while driving but starting again once it cools off usually is not a fuel pump, it is normally a bad sensor that is heating up. It could be a crank sensor, cam sensor or one of the others. Only real way to tell is to scan it with a good scan tool and see what the system is doing when it shuts down.

Does it seem to shut down faster if the engine is already warm instead of cold from being parked overnight? When it shuts off is it sputtering or just like you turned off the key?
Aug 3, 2017 at 1:42 PM
Advertisement