The G37 has one fuel pump. The Infiniti G37 relies on a single in-tank electric fuel pump as part of a returnless fuel system, with no second pump in standard configurations. This article explains how that setup works and what it means for owners and maintenance.
Understanding the G37’s fuel system
Produced from 2007 to 2013, the G37 uses a 3.7-liter VQ37VHR engine that is fed by an in-tank electric fuel pump. The returnless design means there is no fuel return line back to the tank during normal operation; the system maintains fuel pressure through the pump and a regulator at the rail, controlled by the engine computer to meet demand.
Where the pump sits and how it functions
The sole pump resides within the fuel pump module in the fuel tank. It supplies the necessary fuel pressure to the engine’s injectors, with excess fuel managed without a return line under typical conditions. The system’s pressure is regulated to suit idle and high-demand driving, all controlled by the vehicle’s electronics.
Maintenance considerations
When servicing, technicians typically replace the entire fuel pump module rather than a standalone pump to ensure proper alignment with the sending unit and filter. While parts can vary by model year or market, the standard G37 configuration centers on one in-tank pump.
Diagnostics and practical implications
If you’re diagnosing fuel delivery issues, begin by checking fuses and relays, and listen for the pump’s operation. Symptoms like hard starts, stalling, or loss of power may indicate fuel pressure problems. For reliability, many technicians recommend replacing the whole pump module rather than individual components.
Summary
In short, the Infiniti G37 uses a single fuel pump located in the fuel tank as part of a returnless fuel system. This single-pump arrangement applies to the 2007–2013 G37 lineup and is commonly replaced as a complete module when servicing is needed.
Where is the fuel pump G37?
And this cover pops. Off. So here's the fuel pump. The outlet for the fuel pump. And then here we have the uh sending unit. So I have my multimeter.
Do cars have 1 or 2 fuel pumps?
While the number of fuel pumps in a vehicle is greatly based on factors like engine types, performance requirements, and specific applications, cars can have one to multiple pumps to ensure operational efficiency. Standard vehicles typically operate with a single fuel pump system.
How long do G37 fuel pumps last?
Age and Mileage: If your fuel pump is nearing or has exceeded the 100,000-mile mark, it's wise to consider replacement as a preventive measure.
What year G37 to stay away from?
Like most cars, the G37 had some improvements over its lifespan, so the worst Infiniti G37 years are the earliest—in this case the 2008-2009 cars. We're talking small differences, though, because the car changed little during its seven-year production run and it has generally proved reliable.