An intermittent fuel pump shutdown is usually an indication of several problems. #BadfuelpumprelayOne of the worst offenders is the fuel pump relay. This small electrically operated switch sends power to the fuel pump, and if it’s not working properly, it can stop supplying power to the fuel pump at the worst possible moment. Electrical components wear out after more than a certain number of cycles; the one in charge of the fuel pump relay failure is about 100,000 miles. If the relay is faulty, it leads to unstable power supply to the fuel pump, and the car may stall or lose power while driving.
A blocked fuel filter would also be a possibility where this stops the flow of fuel to your engine. An old fuel filter, if not replaced periodically, can get clogged to the point where it causes a fuel pressure drop or fuel starvation. And if the fuel pump has to work harder to push fuel through a clogged filter, it can overheat and shut off. 873074b0-297c-4894-bb51-82de02f965ccA clogged filter causes nearly 25 percent of fuel pump failures, according to AAA. In other words, the pump could turn off as an automatic alarm to protect itself from damage.
The fuel pump itself may also be to blame. Also the fuel pump motor or brushes wear out with time so the efficiency of delivering the fuel remains low. For example, a fuel pump motor that is starting to fail may not physically have enough power to keep running, intermittently cutting off. In corollaries, a failing fuel pump may function while idling but solitarily sons so in the car’s higher power conditions. That’s done in cars with high-mileage engines, especially over 150,000 miles.
One of the more notorious examples is Ford’s F-150 series which saw many of their vehicles be unable to run due to a faulty fuel pump that would cut the engine off, sometimes while traveling at high speeds. Ford determined the main problem was a faulty fuel pump motor, and it recalled close to 1.5 million vehicles. A manufacturing defect in the pumps’ internal components had been identified as the cause.
The post So, what’s with the engine fuel pump disable? appeared first on Hagerty Media. The answer lies in the design of a fuel pump relay that was so badly designed it could stick in the “open” position, in a fuel filter that became clogged all too quickly, or an aging pump that, by this time, found it difficult to hold fuel pressure. These failures are usually detected by the vehicle’s onboard diagnostics system and can trigger error codes such as P0230, which indicates a fuel pump circuit malfunction. A failing Fuel Pump, relay, or filter can easily cause the component to fail, causing the vehicle not to operate properly or stall while in operation, so replacing the components as required can return the vehicle to normal operation.