efi fuel system no power to all fuel pump if you jump relay hear run replace relay same

Asked by Dum3 Jan 19, 2014 at 03:20 PM about the 1989 Ford F-150 S Standard Cab 4WD LB

Question type: Maintenance & Repair

truck start than cut off after check out found fuel pump not running so check out found out if you jump yellow wire that power all time to brown wire at relay  pumps come on  so replace relay  still same problem any ideal what wrong is it computer or senter

2 Answers
10

NoDakfordman answered 10 years ago

Check the tank selector switch in cab. Common for them to crap out. When it does, the whole system goes down. I had a 90 that did the same thing. Grab one or two from the junk yard and plug one in, see what happens. They are cheap so what the hell.

1 people found this helpful.
Mark helpful
5,035

Colin answered 10 years ago

make sure you check your high pressure pump on frame rail. your 89 has 3 fuel pumps,a low pressure pump in each tank that feeds the high pressure pump.

4 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • efi fuel system no power to all fuel pump if you jump relay hear run replace relay same 2 Answers

    truck start than cut off after check out found fuel pump not running so check out found out if you jump yellow wire that power all time to brown wire at relay pumps come on so replace relay still s...

    1989 Ford F-150 S Standard Cab 4WD LB

    -

    Maintenance & Repair

  • Fuel pump relay 13 Answers

    I believe my fuel pump relay is bad. Truck will crank but won't start. Cannot hear pump running. I ran power to the fuel pump and got it started so I believe it's the fuel relay. I'm seeing that so...

    2004 Ford F-150 FX4 Ext. Cab 4WD

    -

    Maintenance & Repair

  • Fuel Pump Relay 3 Answers

    Where is the fuel pump relay?? Ford 150 Heritage Pickup

    2004 Ford F-150 Lariat Ext. Cab SB

    -

    Maintenance & Repair

  • No power to fuel pump 1 Answer

    I have a 91 f150 and just replaced the fuel pump relay, fuel pump, oil pressure switch, and checked all fuses and connections. I had the pump working for about thirty minutes, went inside for abou...

    1991 Ford F-150 XLT Lariat 4WD SB

    -

    Maintenance & Repair

  • No power to fuel pump 1 Answer

    I have a 91 f150, I have just changed the fuel pump relay, fuel pump, oil pressure switch. Also checked all the fuses and have no power to the pump. I did have it working for about thirty minute...

    1991 Ford F-150 XLT Lariat 4WD SB

    -

    Maintenance & Repair

Shortcuts

Search Ford F-150 Questions

CarGurus Experts

  • #1
    OJ
    Reputation
    42,520
  • #2
    Gene Arnett
    Reputation
    16,040
  • #3
    Rowefast
    Reputation
    15,860
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 1500
138 Great Deals out of 7,231 listings starting at $3,950
Used Ford F-250
7 listings
Used Ford Ranger
18 Great Deals out of 1,553 listings starting at $2,888
Used Ford Mustang
61 Great Deals out of 1,274 listings starting at $4,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.