Car is not getting fuel. I changed fuel pump and checked the fuel pump relay. It was in good condition. What else could it be?
My car just died check the presher in fuel no presher so changed fuel pump didn't work check the fuel pump relay it's good the shut off switch is still good what else should I look at? It just turnseems over
My car has 155000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
This may likely be related to the fuel pressure regulator. This is a unit that helps to maintain the fuel pressure in the system. When this is not working, this may cause an erratic fluctuation in the fuel pressure or in some cases, no fuel pressure at all. If you’d like assistance with this repair, I would recommend having an expert from YourMechanic come to your location to diagnose the issue firsthand and service your fuel pressure regulator as necessary.
How to Identify and Fix Common car Problems ?
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If the fuel pump relay fails the fuel pump will be left without power. The engine may still crank when the key is turned, however it will not be able to start due to lack of fuel. This symptom can also be caused by a wide variety of other issues, so having the vehicle properly diagnosed is highly recommended.
If you there is no power to the fuel pump or the relay, then there may be a possible electrical issue with the vehicle. I would first verify that the main EFI, fuel pump, and ignition fuses are not blown, as these can sometimes cut off power to the fuel system.
Fuel pump failures can be caused by electrical faults, old age (wear) or fuel contaminants (dirt, moisture or bad gas). Fuel pump failures often occur without warning. Fuel pumps, injectors and pressure regulators are the three most commonly replaced fuel system components.
If the relay fails it will cut off power to fuel pump and ignition system, which will result in a no power, and therefore no start condition. You may find that turning the key may power on the accessories, and may even crank the engine.
If your starter relay has gone bad, the electrical signal will never make it from the battery to the starter motor. As a result, your engine won`t turn over – no matter how many times you turn the key. A faulty relay often produces an audible clicking sound when you turn your car.
The fuel pump shut-off switch has a red reset button on top of it.
Note: The fuel pump shut off switch reset button is usually located either under the dash in the driver compartment or under the driver or passenger seat. Just move the seat forward and pull back on the carpet or popping off the cover under the seat to access the switch.
The electric fuel pump on a vehicle with a spark ignition engine is controlled by a fuel pump relay. The engine control module (ECM) activates the relay when operating conditions are correct. For safety purposes, the fuel pump relay is only activated when an engine speed signal is received by the ECM.
The PCM will ground the fuel pump relay which supplies power to the fuel pump under some specific circumstances. As a car sits, the fuel pressure gradually decreases and modern cars don`t run without fuel pressure.
Sputtering Engine
Your fuel pump doesn`t stop pushing gas through to the engine once you`ve started your vehicle; it also pumps gas to meet your vehicle`s speed. If the pump cannot produce a constant stream of gas at higher speeds, your vehicle`s engine will sputter and threaten to stall.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Car is not getting fuel. I changed fuel pump and checked the fuel pump relay. It was in good condition. What else could it be?
ANSWER : This may likely be related to the fuel pressure regulator. This is a unit that helps to maintain the fuel pressure in the system. When this is not working, this may cause an erratic fluctuation in the fuel pressure or in some cases, no fuel pressure at all. If you’d like assistance with this repair, I would recommend having an expert from YourMechanic come to your location to diagnose the issue firsthand and service your fuel pressure regulator as necessary.
Just replaced my fuel pump but its not getting any power tested fuel pump relay and fuel fuse both good tested the wires all good.
ANSWER : You need to look at the theft light on dash to make sure it comes on and goes off when you turn the key to the on position. If light comes on and stays on then your theft system is causing the fuel pump to not be engaged. I recommend you check the theft system and then scan the computer for theft system codes. You may need to reprogram the keys to work or you have an bad sensor for the ignition key in the steering column.
the car is acting like its getting to much fuel. changed the fuel pump, fuel filter, and the fuel pump relay.
ANSWER : There could be a few things contributing to your problem. You are correct that clogged or sticking fuel injectors and possibly the fuel pressure regulator could be faulty. A plugged catalytic converter can also cause the vehicle to bog down. A failing throttle position sensor can cause the symptoms you describe as well. I suggest having a certified technician, like one from YourMechanic.com, do a few tests to determine the exact cause of your starting concern.
I changed the fuel pump in my car thinking that it was the problem, but I’m still not getting power to my fuel pump.
ANSWER : If there is access to a wiring diagram, you can disconnect the fuel pump harness and install a test light in between the power and ground circuits and turn the key to accessory or try to start the vehicle and if the test lamp lights up, the circuit is not the problem and you may have picked up a faulted new fuel pump. IF you can hear the fuel pump power up and there is no fuel pressure at the fuel rail, the fuel filter may be clogged. Consider hiring an experienced technician like one from YourMechanic who can come out for a closer inspection of the vehicle to run a few tests and offer a more personal diagnosis of your fuel system concerns.
I found a old fuel pump relay. Do I need to check that first before I get a fuel pump. I had the car for 6 years and I found one i
ANSWER : You can try it but a new relay is pretty cheap and you’ll spare yourself the question of whether it is good or not. If the fuel pump turns out to be bad, then I would put a new pump and relay in at the same time.
Do not forget to also replace the fuel filter, as it can cause the pump to work too hard to produce pressure.
Car sounds like its not getting fuel cranks normal. Fuel pump is working. Fuses and relays good. crank no start. No codes
ANSWER : Hi There,
Try starting the car and if it does not start, turn the key off and then pull one of the spark plugs out to see if it is wet with fuel. If the spark plug is dry, then you know you have a fuel supply problem. If the spark plug is wet with fuel, I would suggest next checking for spark issues such as a failed ignition coil. Ignition coils are prone to randomly failing and causing the car to not start without warning as you describe. I would suggest having a professional from YourMechanic come to your location to take a look at your vehicle.
Try starting the car and if it does not start, turn the key off and then pull one of the spark plugs out to see if it is wet with fuel. If the spark plug is dry, then you know you have a fuel supply problem. If the spark plug is wet with fuel, I would suggest next checking for spark issues such as a failed ignition coil. Ignition coils are prone to randomly failing and causing the car to not start without warning as you describe. I would suggest having a professional from YourMechanic come to your location to take a look at your vehicle.
Why does my car only run if we bypass the fuel pump relay on my 1998 Acura RL
ANSWER : Hi there. If the car will run with the relay bypassed then the fuel pump is fine. If the relay is fine also then the control for the circuit has a failure. Most of the time this is caused by an issue with the ignition switch or the vehicles main relay. Typically it is the ignition switch though. I would usually start by doing a voltage drop test of the ignition switch followed by testing the main relay. This will help to identify the problem. If you need to have this fuel system problem repaired, consider YourMechanic, as a certified mechanic can come to you to [diagnose why the car will not start] https://www.yourmechanic.com/services/car-is-not-starting-inspection
My Taurus will crank but will not start as it is not getting fuel. I installed a new fuel pump relay switch but it did not work.
ANSWER : Hello there, thanks for writing in. I’d be happy to offer my insight. Many different faults can cause your 2013 Ford Taurus to crank but not start. The most common would be the battery. Before any other diagnosis is done, the first step I would do is load test the battery and make sure it is charged and capable of starting the vehicle. If the battery tests okay, there other likely causes such as the fuel pump, fuel filter, starter, battery cable, ignition switch, or wiring harness fault. A qualified technician such as one from YourMechanic will be able to diagnose your crank no start and make any repairs required. Here at YourMechanic, we can have a technician come to your home or office to inspect and diagnose this issue for you, and make or suggest the necessary repairs.
