The most common sign of a failing fuel pump is a noticeable stutter at high speeds and/or a drop in power when accelerating. This is because it is not able to maintain a constant rate of fuel pressure in the supply line in order to meet the demands you are putting on your engine. An equal and opposite symptom is called a surge; when the pump very briefly delivers more fuel than required. Both indicators are indicative of a problematic fuel pump, and should warn any driver that it needs to be replaced as soon as possible. The result would obviously be complete fuel pump failure which would prevent the car from starting entirely. While not terribly dangerous, it is extremely inconvenient and unnecessary if attended to in advance. It doesn't take long for a failing fuel pump to become a dead one. If you are experiencing any of these tell tale signs of a bad fuel pump, then it makes more sense to get the job done now rather than later.
Electric fuel pumps: a vast improvement.
Automotive fuel pumps can be separated into two different styles: mechanical and electric. It's no surprise that the mechanical pump came first. When fuel injection became popular, so did the electric fuel pump. This was a much more efficient design; and while it is a more expensive and highly engineered part, it is prone to far fewer incidents of failure. It pressurizes the fuel before sending it to your fuel rail or injectors, and it keeps it constant for optimum delivery and economy. An electric fuel pump is usually installed inside the gas tank in order to keep the operating temperature low, and uses an electronically actuated turbine to pressurize the fuel before delivery. Don't worry, it will not cause any of the fuel to explode.
Do it yourself... if you dare.
Changing your fuel pump can be somewhat of a challenge. We always recommend professional installation of this component due to the volatile nature of your car's fuel delivery system. But if proper safety precautions are followed, you should be just fine. Keep a fire extinguisher handy just in case.
Of course, you must first find the fuel pump. It will either be mounted in the fuel tank or outside the fuel tank. If you have an in-tank pump, then you will likely have to remove one or more of your rear seats to access it. If you have an external pump, then it will be mounted to a frame rail or floor pan with a few bolts.
Start by disconnecting the battery, unplugging the fuel pump wire harness, and opening the gas cap. This should relieve as much pressure in the fuel line as possible.
Now remove the fuel lines from the fuel pump. Some may spill, so keep a lot of towels on hand.
At this time, you can unbolt it and replace it with your new fuel pump. A new mounting gasket or hardware can be used at this time, so be sure to have those pieces if necessary. Be advised that your old pump may still have a bit of fuel in the bowl, so reuse it somehow or dispose of it properly.
Finally, DO NOT start your car immediately. You should first prime your pump by turning your ignition to the ON position and listening for the fuel pump relay to pressurize the line. When you've done this, turn the ignition OFF and check for leaks. If you fine none, then go ahead and start the car.
We're here when you need us.
Buying a new fuel pump doesn't have to be a hassle. At Car Parts Discount, we offer high replacement fuel pumps for those on a budget, and we also sell original equipment fuel pumps for individuals that prefer the OEM. Either way, we have you covered when you are in need. Plus, we can usually ship your pump the same day or next day right to your door. So the last thing you need to worry about is installing your new fuel pump - not buying your fuel pump. Don't delay, we're here to help.