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My 1999 f250 keeps blowing fuse no, 30. I have replaced relay switch and also fuel pump relay switch, help

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

shaggyrat
  • 1224 Answers

SOURCE: E.E.C fuse keeps blowing in 1991 Ford Explorer

if you replaced fuel pump i would look at backward wiring when replaced and i would start at the source of work if your vehicle was working fine before replacement then 9 out of 10 it will be your fuel pump wireing

sometimes when putting wireing back together the connectors have the missing clip and in turn you can turn the wireing in both directions now where positive is touching the ground on both sides of connector kris kross problem check your work this is crucial use a test light to find the right wires where they go

Posted on May 26, 2008

  • 37 Answers

SOURCE: keep blowing fuel pump fuse

replace your ignition modular

Posted on Feb 22, 2009

  • 14036 Answers

SOURCE: fuel pump relay keeps blowing on my 1996 Cadillac STS, why?

replace fuel pump wires.they could be shorting out pump relay.

Posted on May 27, 2009

emissionwiz
  • 75066 Answers

SOURCE: fuel pump fuse blowing

replace the fuel pump, it is drawing to much current, this is common when the pump bearings get worn out, also make sure you replace the fuel pump connector at the fuel tank connection, it will be burnt..

Posted on Jul 02, 2009

66 chrgr
  • 1011 Answers

SOURCE: no voltage going to new fuel pump

The GRAY wire i believe going to the fuel pump is the hot wire it should come on for 2 seconds with just the key in the on position this is were you should check voltage for 2 seconds then it will go away until you crank the truck.Your oil sending unit is behind your distributor that could be the cause .

Posted on Aug 01, 2009

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1 Answer

My 1999 f250 is blowing the fuel pump fuse can you help


You have a short to ground ! Finding The Source Of Electrical Shorts In Your Car Which fuse is blowing ? # 10 a 20 amp in the under hood fuse box ? Check the fuel pump relay , that could be the problem .
You can find location of fuel pump relay here . http://www.bbbind.com/free_tsb.html Enter vehicle info. Year , make , model and engine size . Under system click on electrical distribution , then under subsystem click on junction block ! Then click the search button , then on the first blue link . The first diagram is of the under hood fuse / relay box . Try another relay , they can short internally .

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WHEN I TURN ON THE IGN SWITCH TO START POSITION I KEEP BLOWING THE FUEL PUMP FUSE BUT WHEN I REMOVE THE INJECTOR RELAY IT DONT BLOW THE FUSE


I would think that either the power wire feeding the pump or the pump itself is grounded and causing the fuse to blow. Pulling the injector relay is opening the circuit and not feeding power to the pump would be why it doesn't blow the fuse when it is removed.

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Why i keep blowing a fuel pump fuse?


Hey Paula, if it keeps blowing that could mean a short in system or more so the pump is having trouble pumping it is 20 years old also check the fuel pump relay

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The replacement fuel pump could be defective.

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Pull the EFI relay, replace the fuse, and see if it blows when you turn the key on. If it does not turn the key off, reinstall the EFI relay and remove the circuit opening relay/fuel pump relay. Turn the key on. If the fuse blows than we know the problem is One of the O2 sensors, the IAC, the purge solenoid, or the ECM You can unplug the O2 sensors, iac, and purge solenoid. Replace the fuse, turn the key on, and plug them in one at a time until the fuse blows. Replace that component. If the fuse blows with those unplugged than its probaly the wiring and possibly the ECM. let me know what you find and I'll help you more if needed.

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Fuel pump fuse keeps blowing on 99 dodge neon. Changed relay, but didn't help. Fuel pump or something else? It mainly does it when you hit the brakes.


Usually if a fuse blows when applying something else( brakes) indicates they are on the same circuit. Verify the brake lights don't work when the fuse is out or blown. If lights still are working then it's probably not related. If on same circuit then the extra load of the brakes is enough to blow the fuse. Insure you are putting in the correct fuse. Also, this indicates you fuel pump is in a strain either due to restricted fuel filter or worn pump. Replaceing the fuel filter now will only buy you a little time before the pump goes on out. It's blowing fuses because it's drawing more amps in order to run, but always replace filter when replacing pump.

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1 Answer

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