Yes, a fuel pump will cause engine stalling. Worn Out Fuel Pumps otherwise would not allow the flow of fuel from tank to engine, and this leads to lack of fuelling starving your car in areas where you need it that makes your engine Stall with especially under Max Acceleration. According to RepairPal, in fact almost 30% of vehicles that stall end up having the fuel pump as a root issue. If the fuel pump does not supply enough fuel when you press on your gas pedal to accelerate, or while going up a hill at highway speeds for example (and not under normal heavy acceleration), causingthe engine stops running.
A common symptom of stalling from a bad fuel pump is an engine that acts like it's out of gas due the reduced amount of pressure in the system. For a normal fuel pump, the PSI should be 30-85 (depending on your vehicle model) If the pump begins to fail, this pressure can go below its minimum and fuel starvation or intermittent delivery of petrol is likely. This means pumps can degrade after long trips and become so worn that they'll overheat, causing about 20% of affected vehicles to stall due as the pump can't push fuel.
In high-performance vehicles, which require additional fuel at speedier rates in the engine block of an internal combustion engined power plant, stalling as a result of impending pump failure is correspondingly more widespread. Car and Driver note that high-end buyers can experience stalling where the fuel pump may cut out if it's not flowing more than 255 liters per hour (LPH)—i.e., when hard acceleration dictates such volume—on performance models. When the pump cannot keep up this flow rate, fuel starvation will occur in engines and then stall suddenly.
A fuel pump that is failing can also result in stalling while under a load. In a similar way, the engine needs more fuel when going uphill or towing something. When the fuel pump is weak, it doesn't have enough pressure to keep that clean jet of fine atomized gasoline and air frame running efficiently. A survey by Consumer Reports determined 15% of vehicle stalls in these instances were due to defective pumps that failed to deliver enough fuel.
With all its parts, a failing fuel pump is the culprit for stalling and goes bad in every car over 100k miles. Over time as fuel pumps wear out, they become less efficient at delivering juice to your engine resulting in erratic stalling — Edmunds A subset of drivers notice it most when driving abroad, in scenarios where the fuel demand is consistent but high -- such as cruising on the highway (yes - we're talking about stalling) In these cases, the fuel pump is inadequate for the application and therefore cannot deliver sufficient flow to keep up with demand resulting in loss of power or stalling.
A fuel pump failure is a deadly sin that if ignored and left to run its course will devastate an engine. A wise security expert named Bruce Schneier said once, "Attention is the enemy of new problems. — more accumulated fucking garbage brought to you by small children with large pockets" This is the basic principle of fuel pumps. If you ignore failing pump signals, like stalling, you may end up with more expensive repairs that can include engine damage.
If you are having symptoms or problems with stalling, it is critical to check the fuel pump and ensure that it has no issues. If it requires a replacement, then helpful options like Fuel Pump can get your vehicle performing as good as new to prevent any more stalling.