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How do you know if a relay is going bad?
You want to feel and listen for any clicks. If you feel and hear clicks, the relay works on one side – the side with the energizing circuit and coil. However, if there was no sound from the horn, the relay has a problem along the contact circuit.
Can a bad fuel pump relay cause misfire?
In some cases, a bad fuel pump relay that is not providing enough pressure might even cause your engine to misfire. So if you have ever asked, “can a bad fuel pump relay cause misfire”, the answer is yes. There are a ton of other reasons why your engine might have performance issues.
How long will a fuel pump relay last?
On average, a fuel pump relay will last for 160,000 km to 300,000 km. If the car is daily driven, the said mileages could mean that the car is used for around eight to 15 years already. If your car reaches this point, then it could mean that you need to replace it so your fuel pump will work properly.
What happens if I remove the fuel pump relay?
The relay must be replaced if this happens. The fuel pump relay is usually located in the vehicle’s long black box with the other relays and fuses. The location can be different, however, in some other cars.
How do you know if your fuel pump relay is bad?
If you do not hear it even after waiting for some time, this may be one sign that your fuel pump relay is bad. If you want to be certain your fuel pump relay is bad, you can try to listen for those same noises from outside your car. With your car ignition on, move over to the fuel tank area of the vehicle.
What happens when a fuel pump fails?
If you ignore all of the other warning signs of a failing fuel pump, it will eventually fail completely. Once your fuel pump has finally given up the ghost, no fuel will reach your engine. You may hear your spark plugs firing when you try to start your car, but without fuel, the engine won’t be able to turn over.
Where is the fuel pump relay located in a car?
In most vehicles, the fuel pump relay can be located in the fuse box in the engine bay. The fuse box of the engine is usually a long black box which contains fuel pump relay along with various other fuses and relays. For different vehicles, the fuel pump relays can be located in different places.
How to test the fuel pump relay on a Ford Ranger?
1 Locate the fuse box 2 Locate the fuel pump relay 3 Set your multimeter on ohms 4 Test the fuel pump relay with help of a 12V battery or voltage regulator 5 Connect the ground pin on the relay to the ground of the power supply. 6 Check if the meter shows continuity. If the continuity is not observed, your fuel pump relay has failed.