If you don't have a working BMW 540i fuel pump, your car isn't going anywhere. Your 540i fuel pump resides inside your gas tank, where it is responsible for sending fuel up into your engine. Whenever your engine is running, so is your BMW 540i fuel pump.

Of course, like any mechanical part, your 540i fuel pump generates heat as it works. Since it doesn't have its own personal fan like your radiator, the BMW 540i fuel pump uses your fuel supply to keep cool under pressure.

This is why you may have heard that you should keep at least a quarter tank of gas in your fuel-injected car at all times. Without a cooling bath of fuel, your 540i fuel pump will become overheated and its moving parts will stop moving. This means you will not get fuel moving to your engine, and your car is dead until you replace your BMW 540i fuel pump. It is a rare occurrence to have a 540i fuel pump just up and die. Usually, your BMW 540i fuel pump will give you plenty of warning before it quits. Some of the signs of a failing 540i fuel pump include difficulty starting your engine, particularly if your engine seems to turn over but does not "catch" easily; a poor engine idle that is not corrected through a tune-up; or an otherwise unexplained loss of power that causes hesitation or stumbling. Any of these problems could indicate that your BMW 540i fuel pump is having trouble getting fuel to your engine, and should be replaced soon.Don't wait until your car dies to replace your faulty 540i fuel pump when you can order from our convenient online catalogue and have a new BMW 540i fuel pump delivered right to your door.