No power to the fuel pump

Question 1

0helpful

1answer

Mercedes Fuel pump is not working.

1. Check the fuel pump fuse: Locate your vehicle's fuse box (usually found under the dashboard or in the engine compartment) and check the fuel pump fuse. If it is blown, replace it with a fuse of the same amperage. If the fuse is fine, proceed to the next step.

2. Check the fuel pump relay: The relay controls the power supply to the fuel pump. You can typically find the fuel pump relay in the fuse box or a separate relay box. To test the relay, you can swap it with an identical relay (such as the horn relay) and see if the fuel pump starts working. If it does, the relay is the problem and needs to be replaced.

3. Inspect the wiring: Damaged or corroded wiring can cause a loss of power to the fuel pump. Check the wiring leading to the fuel pump for any visible damage, corrosion, or loose connections. Repair or replace any damaged wires and clean corroded connections.

4. Test the fuel pump for proper function: If you have access to a multimeter or test light, you can test the fuel pump terminals for power when the ignition is turned on. You should see a voltage for a few seconds as the pump primes. If there's no power at the terminals, the problem could be a faulty ignition switch, fuel pump control module, or a wiring issue.

5. Faulty fuel pump: If all the above steps show that power is reaching the fuel pump, but it is still not working, the pump itself might be faulty and need replacement.

Jun 14, 2023 • Cars & Trucks

0helpful

2answers

Showing no fuse on dashboard of pt cruisers 2005 and fuel pump not working

The fuel pump not working in your 2005 PT Cruiser and the absence of a "fuel pump fuse" on the dashboard could be caused by a few different issues.

Blown Fuse: If the fuel pump fuse has blown, it will need to be replaced in order to restore power to the fuel pump. The fuse box in a 2005 PT Cruiser is typically located under the hood, on the driver's side.
Fuel Pump Relay: The fuel pump relay controls the power to the fuel pump. If the relay has failed, the fuel pump will not receive power and the engine will not start. The relay is usually located in the power distribution center or the engine compartment fuse box.
Fuel Pump: If the fuel pump itself has failed, it will need to be replaced. The fuel pump is typically located in the fuel tank.
Wiring Issues: Wiring problems can also cause the fuel pump to stop working. If the wiring has been damaged or is corroded, it will need to be repaired or replaced in order to restore power to the fuel pump.

If you are not comfortable diagnosing and fixing the issue yourself, I would recommend taking your vehicle to a certified mechanic. They will be able to diagnose the problem and make the necessary repairs.

Feb 12, 2023 • Cars & Trucks

0helpful

1answer

I have a 97 Nissan Sentra gxe that's fuel pump harness is not getting power fuel pump is not buzzing replace it with new fuel pump I check fuel pump connector harness with volt meter hookup to ground wire...

Check continuity of the wires between the relay and the pump.

Oct 19, 2017 • Nissan Cars & Trucks

0helpful

1answer

Why isn't fuel pump pumping?

fuel pump power can be controlled by the pressure regulator that signals the ECM to turn on the pump relay to power the pump
check further afield from the pump as the problem is else where

Jan 20, 2016 • Cars & Trucks

0helpful

3answers

Maybe this will help ---

Also check the fuel shut off switch since you do not have power.

Jan 08, 2015 • 2002 Toyota ECHO

0helpful

1answer

05 Chevy cobalt have no power to fuse block for fuel pump

You have no voltage at 15 amp fuel pump fuse in the under hood fuse/relay center ? There is a fuel pump relay also in same under hood fuse box. The fuel pump fuse gets power from the fuel pump relay. The ( PCM ) engine computer controls that relay, gives power or ground electronically to turn the relay on giving power to the fuel pump through the fuel pump fuse. You could have a bad relay or an anti-theft system problem . What engine does you vehicle have 2.0 L or 2.2 L the 2.0 L engine gets power differently to fuel pump .

Dec 28, 2014 • 2005 Chevrolet Cobalt

0helpful

1answer

Fuel pump

the fuel pump is supplied power via the fuel pump relay. The relay gets power for the fuel pump through the ECM B fuse. This fuse also supplies power to the vehicle control module.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Apr 05, 2013 • 1999 GMC Jimmy

8helpful

1answer

Car will turn over but won't start. Through the

No noise from fuel pump when you turn over the car .First thing get voltage at fuel pump relay checked, is there 12 volt to the relay.If no, then problem is again the relay.--------- To reconfirm the problem, try other test, that is remove the relay and by pass the relay terminals with a jumper wire .Then with 12 volt external battery give power to fuel pump connector and see, if the fuel pump starts, then its clear that fuel pump relay is faulty.----------- Also other problem can be fuel pump inertia switch.If the inertia switch is faulty then also fuel pump will not start.-------- The fuel pump relay on a 1995 Ford Explorer is in the power distribution
box, in the engine compartment, driver's side near the firewall.----------
The fuel pump inertia switch is in the right front passenger area
it is below the dash but above the carpet in the right hand corner.--------
Its a push button type inertia switch.
--------
Fuel Pump Activation
When ignition switch is turned to START position, PCM operates fuel pump relay to provide fuel for starting engine. PCM senses engine speed and shuts off fuel pump by opening ground circuit to fuel pump relay when engine stops or engine speed drops to less than 120 RPM. When ignition switch is in ON position, EEC power relay is energized (contacts closed). Power is provided to fuel pump relay and timer in PCM. Fuel pump receives power through fuel pump relay contacts.
Inertia Fuel Shutoff (IFS) Switch
All models use an electrical interrupt switch in fuel system. During a collision or vehicle rollover, electrical contacts within inertia switch open, shutting off fuel supply to electric fuel pump. Fuel supply is interrupted even when engine is running.
A reset button is located on switch assembly. If electrical circuit trips, vehicle will not restart until switch is reset. Fuel system should be inspected before resetting switch.
IFS switch is located under instrument panel, near right side of transmission hump. ----------- If the fuel pump relay, the inertia switch and fuel pump all checked ok, and fuel pump is working with direct 12 volt source to fuel pump.Then problem relates to computer.The computer (power control module, PCM) is faulty and has to be replaced.--------- This will help.Thanks.Helpmech.

Jul 17, 2011 • 1995 Ford Explorer

1helpful

3answers

Not getting fuel to the carburator. I have poured fuel on the carburator and it started, then it shut down. The fuel pump was replaced about 2 years ago..

check fuel pump relay on firewall passenger side if it has power and power when the key is turned on will click test power through relay to fuel pump disconnect connector at fuel tank make sure you have a good ground test for power at sending unit when key is os or in start if power the sending unit has rotten corroded wire going to fuel pump you will have to remove the fuel tank test power right at the pump if there is no power replace sending unit if power a pump use teslight one end on ground terminal and other lead on power terminal at pump if you have power replace the pump

if this is helpful plz leave a comment like and if you need more help ask once you eliminate pump good luck

Jan 16, 2011 • 1997 GMC Sierra

12helpful

2answers

1997 Ford F150 Electric Fuel Pump will npt pump

Did you check the fuel inertia switch in the passenger side kick panel ?

The fuel pump is powered :
the fuse to the fuel pump relay.
The fuel pump relay to the fuel inertia switch
The fuel inertia switch to the fuel pump itself.

At the fuel inertia switch in the kick panel, power from the relay is the Dark Green w/ Yellow stripe wire and the pink w/ black stripe wire is the power. from the fuel inertia switch to the fuel pump.

If you jumper the fuel pump relay, you should hear it run. If not pull the fuel pump relay, and check the pins in the relay socket, pin 30 should be the power from the fuse.

If you have power at pin #30, jumper the relay socket as shown with the red line above, and check the dark green w/ yellow stripe wire at the fuel inertia switch for power.
Press the button on the top of the fuel inertia switch, and check for power leaving the fuel inertia switch on the pink w/ black stripe wire.

This is tests good, check for power at the fuel pump, same pink w/ black stripe wire.
Fuel inertia switch info is in the owners manual, If you did not get an owners manual with your truck ( purchased used ), you can download one from Ford :
https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

Jan 03, 2010 • 1997 Ford F150 Regular Cab

Question 2

Anonymous

Master 984 Answers
Posted on Nov 17, 2009

Anonymous

Master

Joined: Feb 18, 2009

Answers

984

Questions

0

Helped

961911

Points

2201

Once you check the fuel inertia switch in the passenger's side kick panel, next is to check the fuel pump fuse, engine compartment fuse # 10.

If this checks OK ( power on both sides ), you can pull the fuel pump relay, and jumper it.

The engine compartment fuse panel is where the fuel pump relay is located at ( relay # 301 ). Pull the fuse pump relay out of the socket, and using the diagram below, with the red line, momentarily jumper the Normally open contacts, you shoud hear the fuel pump run. ( mind the pin orientation when doing this ) :
no power to the fuel pump - 86000f6.jpg

I had a bad fuel pump relay on my 2001 F-150 @ ~ 36K miles. Replaced with the trailer tow battery charge relay ( relay #302 next to it ) and it worked again.
The symptom I had was a crank no start ( theft light on dash went out ).

If the fuel pump does not run, and power is on pin #30 in the relay socket, next is to check the output of the fuel inertia switch in the passenger side kick panel. The output of this is the Pink w/ Black stripe wire. The connector to the fuel pump inertia switch should be a 2 pin connector, the other color in the connector is Dark green w/ Yellow stripe wire ( that is from the pin #87 in the relay socket in the engine compartment ).

If that circuit has power at the passenger side kick panel, next is to check for power at the fuel pump at the fuel tank. The fuel pump motor is the same Pink w/ Black stripe wire. The connector is a 4 pin connector with black ( ground for the fuel pump ) black w/ orange stripe ( ground for the fuel level ) and yellow w/ white stripe ( to the instrument cluster for the fuel gauge ).
When testing by the fuel tank, make sure you have a good ground for the meter ( extension from neg on the battery or trailer tow adapter ) as that could also be a problem under the truck.

Sorry for war and peace, hope it helps.

Answer 2

Anonymous

Master 1,627 Answers
Posted on Nov 17, 2009

Anonymous

Master

Joined: Jul 23, 2009

Answers

1627

Questions

1

Helped

700249

Points

5206

Could be the fuel pump relay or you may just need to reset the rollover switch in behind the glove box.The operaters manual will tell you exectly how to locate it.

Related Topics:

Trustworthy Expert Solutions

No power to the fuel pump - 2001 Ford F150 Styleside SuperCrew

2 Answers

Anonymous

Anonymous

Add Your Answer

Attachments: Added items

Related Questions:

Mercedes Fuel pump is not working.

Showing no fuse on dashboard of pt cruisers 2005 and fuel pump not working

I have a 97 Nissan Sentra gxe that's fuel pump harness is not getting power fuel pump is not buzzing replace it with new fuel pump I check fuel pump connector harness with volt meter hookup to ground wire...

Why isn't fuel pump pumping?