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New fuel pump no electric source checked fuses all ok

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  • Cars & Trucks Master
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May be it's pump itself? Have you checked voltage on it's lammels?

Posted on May 02, 2017

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Lost electrical power to fuel pump


There are many reasons why fuel pumps have no power, most (in tank) fuel pumps fail due to low fuel inside of tank.

These fuel pumps turn at an alarming rate which in turn causes an alarming amount of heat. This heat is then dissipated by the fuel inside of the tank itself.If the driver/operator allows to run the fuel very low and continue to do so, this will over time allow for the fuel pump to overheat due to the ONLY source used to cool the fuel pump is the fuel inside of the fuel tank itself. Electrically, view the operator's manual or similar source to locate fuel pump fuse and/or relay of which will open the electrical path when the fuel pump overheats.
This should be a pretty good starting point to locate/isolate electrical issue you may be experiencing.

Good Hunting to you & hope this gets you back on the road soon!
FASTESTNASCAR

Dec 27, 2011 | 1987 Mercedes-Benz Mercedes Benz 190 Class

1 Answer

1991 subaru legacy sport (turbo). Electrical fuel pump issue. the pump works, used an external 12v source with pump removed from vehicle, currently reinstalled. battery is charged, (sbfd fuse #2) is...


Hi,
if there is no power coming out from the relay, that will be the problem. as you said it is new,check it manually by connecting the terminal into the power source and check the continuity of the the output from the source.
Sometimes there is new parts that has a manufacturer defect. try another relay.

Hope that helps you out!

Aug 14, 2011 | 1991 Subaru Legacy

2 Answers

My w reg seat ibiza 1.4 cool/s will not start. I have found that the fuel pump is not working, tho i think its ok. There is no power to the pump or the fuse for the pump? Relay maybe?


First off, as soon as your ignition key is turned to on, your fuel pump is activated for 5 seconds. Once it's running, it will have constant power to the fuse. Now, remember that all power in a Volkswagen goes through the ignition switch first. Use a test light and check for power at relay coming from ignition switch. You can also add power to the fuse and see if the relay clicks and the pump is on. You should hear a buzz from the pump. That will isolate the pump from the ignition switch. Ignition switches in these cars are made with plastic housings and metal contacts. Contacts tend to melt in these, hence the fuel pump will not come on. Weak part of Volkswagen has always been the electrical.

Jan 10, 2011 | 1996 Volkswagen GTI

2 Answers

1995 toyota camery is there a fuse or relay for the fuel pump


The fuel pump doesn't have a single designated fuse, it gets electrical input voltage from several sources, the fuses tart you need to check are the 7.5A ignition fuse, the 15A EFI, the 15A starter. There are two relays that are involved, the circuit opening relay located behind the glove box and the EFI main relay located in the fuse box under the hood, the most common problem when there is no fuel pressure is the fuel pump, check all the fuses and substitute the two relays to see if it solves the problem.

Nov 18, 2010 | 1995 Toyota Camry

1 Answer

My fuel pump does not work while hooked up to the electrical system. Once I hook it up to an outside electrical supply it works. The fuse is OK. Where might the problem be?


check for power at the plug to the fuel pump. No power? check fuel pump relay. check for proper ground connection or make a new ground connection.

Aug 09, 2010 | 1998 Lincoln Town Car

3 Answers

No power to the fuel pump (used electrical circuit tester down at the pump) fuse blocks under hood seem ok 40 engine quit suddenly. spark ok.


Check the fuel pump relay which is under the hood behind the battery. You'll see 2 turn clips to remove the cover. It should be the 2nd relay as your looking at the car.

Mar 31, 2010 | 1988 Jeep Cherokee

2 Answers

I have a 1964 oldsmobile super 88. where is the fuel pump. it has an electric pump underneath. however i replaced it and the car ran for a day. now there is no fuel to the carb. thinking of .....


OEM fuel pump was mechanical, driven by the cam and is bolted to the block

if with the replaced electric fuel pump still no fuel, then check power and ground remove the output line and check for fuel there

possible clogged fuel filter... the one mounted on the carb and/or in the fuel line to the carb.... yes there should be TWO filters!

Mar 18, 2010 | Oldsmobile 88 Cars & Trucks

1 Answer

No fuel /fuse ok, fuel filter brand new!


  1. Remove the fuse for the fuel pump (located in the fuse panel in the left knee bolster).
  2. Turn the ignition key to the start position for approximately 15 seconds (this will release the fuel pressure).
    1. Remove upper and lower portions of rear seat.
    2. Remove round fuel pump access panel.
    3. Remove fuel pump electrical connector.
    4. Remove fuel pump mounting screws.
    5. Lift fuel pump assembly from tank.
    6. Reverse procedure to reinstall, using a new o-ring and torque fuel pump assembly to 1.4 - 1.9 ft-lb (2 - 2.5 Nm) .

Aug 11, 2009 | 1990 Nissan Maxima

1 Answer

94 Integra Won't Start


If the pump blew the fuses then the pump or the wiring to it inside the gas tank is shorted.

Jul 11, 2017 | 1994 Acura Integra

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