Fuel Pump Driver Module Failure Symptoms
The fuel pump relay is an electronic component that is found on virtually all vehicles equipped with an. It is often found in the fuse box located in the engine bay and functions as the primary electronic switch that controls power to the. The fuel pump relay is usually controlled by the ignition or Powertrain Control Module, and when switched on, will provide current to the fuel pump so that it may function. As the fuel pump relay controls power to the fuel pump, any faults with it can cause issues with the fuel pump, which can cause drivability problems for the vehicle. Usually a will produce a few symptoms that can alert the driver of the issues.
Engine stalls One of the first symptoms of an issue with the fuel pump relay is an engine that. If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump, which will cause the. A faulty relay may allow the vehicle to be restarted a short while later, while a completely failed relay will not. Engine does not start Another symptom of a faulty fuel pump relay is an engine that. 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.
Fuel Pump Driver Module Location
This symptom can also be caused by a wide variety of other issues, so having the vehicle is highly recommended. No noise from the fuel pump Another symptom that may hint at an issue with the fuel pump relay is no noise from the fuel pump when the key is switched on. Most will produce a low volume hum or whine which can be heard from the inside the vehicle if listened for closely, or from the outside of the vehicle, near the fuel tank.
If the fuel pump relay fails, it will cut off power to the fuel pump which will render it inoperable, and therefore silent, when the ignition is on. While the fuel pump relay is a very simple component, it plays a very important role in the proper operation of the vehicle.
Fuel Pump Driver Module Problems
If your vehicle is displaying any of the symptoms above, or you suspect that your fuel pump relay is having an an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the component should be.
Our 2007 FS SEL quit on a roadtrip on Friday. No preliminary problems, no 'Check engine' light, nothing. Just died while driving. Towed to local Ford dealer, who advised that the 'Driver module' and the fuel pump went out. Car has about 60K miles.
The fuel pump relay is usually controlled by the ignition or Powertrain Control Module, and when switched on, will provide current to the fuel pump so that it may function. For the vehicle. Usually a bad or failing fuel pump relay will produce a few symptoms that can alert the driver of the issues. Jul 20, 2009. Fpdm Check your reset button first. Its located behind the trunk panel on the driver's side - rear. All it takes is a bump while you're in the trunk to make it trip. Normally when the driver (FPDM) goes bad, there is no fuel pressure because the fuel pump is not working. It's a driveability problem, it's fully tune. Apr 25, 2013. 07 new body chevy silverado vin j engine 5.3. Also has lean condition on both banks, previously before i bought the truck the previous owner had changed throttle body, fuel rails and sensors, catalytic converter, fuel pump control module and programmed, computer and programmed, not sure of the brands.
Recent problems with throttle body. Cleaned it and replaced the fuel filter. To get the fuel pressure down, I pulled the #44 Relay to temporarily disable the fuel pump, then cranked it until it died.
Had the battery unhooked for about 30 minutes which reset the codes. None came up again. 1.Is there anything I could have done to induce this problem I now have? Has anyone here heard about a 'Driver module' 3. How difficult is it to replace it and the fuel pump? The dealer wants $1400, which I can't really afford.
Wow, $1,400 for a pump job.i replaced the Fuel Pump (complete Sending Unit) on mine a couple of months ago, its not hard at all IF you have the right tools, and maybe an extra hand (not compulsory).you need to have the Lock Wrench to unscrew the Round Lock holding the Sending unit firm to the tank. The pump (sending unit) is inside the Tank under the Right-side Chair in the middle row.IF you don't have an extra pair of hands to help out, then you will need to also remove the Chair on the Left-side to be able to roll back the Rug further away from the Tank.
Download apps for java phone. To me, there is only one demanding stage when doing this: when trying to connect the TWO lower hoses to the Unit right there inside the Tank because of the tight space in the opening to the tank (there are Four hoses with clips AND a Power plug to connect.two Hoses inside, and two hoses outside the tank). I listed my own procedure.i didn't have the Workshop Manual, but this thing is still pretty straightforward. When you said Driver Module, did you mean the 'Injector Driver Module'? It seems incredibly unlikely that both the fuel pump and the driver module both died at the same time.and if the FPDM isn't sending a signal to the fuel pump, it's unlikely they'd know the fuel pump is dead.
Replacing the FPDM is really easy, one or two bolts and an electrical connecter. That's the good news. The bad news is that access is a bit tough. It's behind the passenger side c-pillar, so you'll have to remove some plastic panels. Take a look here: If you look at the pic with the subwoofer, the FPDM is right above it to the left. You can check this module for continuity to see if this is actually the problem, or you can just replace it.
You'll probably have to get that part from a dealer, though there are online dealers that sell parts pretty cheap. I'd probably try this first. How did the dealer determine that this is the issue? Jack Watts wrote:It seems incredibly unlikely that both the fuel pump and the driver module both died at the same time.and if the FPDM isn't sending a signal to the fuel pump, it's unlikely they'd know the fuel pump is dead. Replacing the FPDM is really easy, one or two bolts and an electrical connecter. That's the good news.
The bad news is that access is a bit tough. It's behind the passenger side c-pillar, so you'll have to remove some plastic panels. Take a look here: If you look at the pic with the subwoofer, the FPDM is right above it to the left.
You can check this module for continuity to see if this is actually the problem, or you can just replace it. You'll probably have to get that part from a dealer, though there are online dealers that sell parts pretty cheap. I'd probably try this first. How did the dealer determine that this is the issue? The question of how the dealer determined the issue also interests me. Right now I have no idea. Tomorrow, I will go.
Some related question I am also wondering. After looking for availability of parts, I accidentally came across the on-line version of the owner's manual, which listed RELAY # 44 as: Fuel Pump Driver Module and Fuel Pump Relay. So I was wondering if that relay went bad, would it not then cause a failure code for the items listed? Also, I pulled that relay as instructed in order to change the fuel filter (reduce the fuel pressure).
Could I somehow have damaged it or the other two related things while changing the filter? Do you have fog lights? If so, just swap the relay. It's entirely possible you just don't have it seated. Relays can be finicky, too. Sometimes you can remove a relay, tap on it and re-install it and it'll work.
Welcome to mass-produced $.02 circuit boards. So yeah, it's entirely possible it's just the relay. If you have a digital multimeter, you can check the voltage at the relay box to see if the problem is before the relay. It'll take about 30 seconds.
If you need help, let me know and I can walk you through it.