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The best thing that you can do in order to start a car with a faulty fuel pump is to maintain enough heat on the engine. However, this will result in the car’s immediate malfunctioning and disruption of its performance. The reason why your car will still work despite the bad fuel pump is because when the car gets cooler, the pump will reset without the need to apply heat and pressure. Maintaining the car engine’s heat can also make for a good solution when it comes to starting a car that has a bad fuel pump. This way you will be able to start your car even though the fuel pump is bad while also giving you an idea on the actual issue. You just need to attach the pressure gauge to your car’s engine. In fact, even mechanics swear by this method. The use of a fuel pressure gauge is among the most effective solutions when it comes to dealing with a bad fuel pump. The external pressure can help to maintain the necessary level of pressure that can make the engine to work. Thus, the best way to address this is to apply external pressure as you start your car. The biggest issue with a bad fuel pump is that it has the tendency to reduce the required pressure needed to operate the car and this can lead to issues with the car’s performance. One thing that you can do when starting a car with a bad fuel pump is to apply external pressure. Nevertheless, there are several other solutions on how you can start your car with a bad fuel pump. Overheating is actually one of the most common signs that your fuel pump is bad. A bad fuel pump has the tendency to lower the required pressure that can affect the air to fuel ratio of your car’s engine.ĭriving your car while the fuel pump is faulty could easily burn the pump’s motor and will overheat the engine. One of the most basic indications of a faulty fuel pump is that the engine has low pressure. It’s important to first check if the fuel pump of your car is really defective. If the test is successful and the fuel pump works, make sure you replace the defective relay before you start driving your car. This should give you an idea if the relay is defective or not. Replace the relay with another one and then try to start your vehicle or listen closely to the fuel pump as it runs while the engine is on. You need test equipment to test the relay although most of the relays in the box have similar size and AMP rating. The location of the relay will also be indicated on the cover of the box or in your car’s manual. If there’s nothing wrong with the fuse, then check the fuel pump relay. But make sure that you’re using the fuse with the same color or the one that has a similar AMP number with what’s listed at the top of the original fuse. There are some cars that have extra fuses for the fuel pump so you can use them. If it is, then you should immediately replace it. Hold it close to inspect if it is broken. Pull the fuse out to get to the fuel pump.
#Can you drive with a bad fuel pump module manual#
If you don’t find the list, then refer to your car’s manual to find out where it’s located. Most manufacturers list down the fuses by number and position and you’ll find this on the cover. When you open the cover, you’ll find the fuse index. The circuit box or fuse panel can be found near the battery and comes in the form of a small black box and has a removable cover. For cars that have two fuse panels, check the one that’s on the engine compartment. The best way to check if your fuel pump is faulty is to inspect the fuse panel and check if the fuse is blown.
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Figuring Out If Your Fuel Pump Has Issues