Intermittent low fuel and oil pressure light

Discussion in '1st Gen - 1997 - 2002' started by Travistyson1, Jul 12, 2018.

  1. Travistyson1

    Travistyson1 Active Member

    Age:
    39
    Posts:
    33
    Likes Received:
    1
    Joined:
    Feb 16, 2017
    Location:
    Seminole florida
    98 expedition xlt 5.4 4WD auto
    On my way to work the fuel and oil lights were coming on intermittently. The fuel is over 1/2 tank and the Oil pressure was good. Plugged in my logger to make sure. Any ideas at all on where to start. I have had something draining my battery lately as well
     
  2. 1955moose

    1955moose Full Access Members

    Posts:
    4,284
    Likes Received:
    738
    Joined:
    Nov 23, 2014
    I'd get a schematic and see if the 2 share either a hot, or a ground. It's possible one of your grounds is loose, or corroded. I'll check my 2000 schematic later, although it may be different than yours.

    Sent from my N9131 using Tapatalk
     
  3. Travistyson1

    Travistyson1 Active Member

    Age:
    39
    Posts:
    33
    Likes Received:
    1
    Joined:
    Feb 16, 2017
    Location:
    Seminole florida
    I was thinking it has to do with the electrical system also. Considering something keeps draining my battery. Usually it has to sit for several days before going dead
     
  4. Don Hall

    Don Hall Supporting Member Supporting Member

    Age:
    86
    Posts:
    132
    Likes Received:
    18
    Joined:
    Jun 8, 2018
    Location:
    SANTA CRUZ, CA
    Batt going dead in several days is not normal. My '04 may sit for 14 days, and starts immediately.

    To check for a parasitic drain, connect an ammeter between the + batt post and the + batt cable. Pull and replace one fuse at a time, and when you see an decrease in amps, you have located the circuit causing the parasitic drain. Unfortunately, a fuse may protect more than one circuit, so more analysis may be required.

    Yes, I'm aware I haven't provided a solution to the fuel and oil lights, but the parasitic drain may be a short within those circuits.
     
    Last edited by a moderator: Jul 12, 2018
  5. stamp11127

    stamp11127 Super Moderator Staff Member

    Age:
    61
    Posts:
    5,485
    Likes Received:
    825
    Joined:
    Mar 10, 2012
    Location:
    Temple, Georgia
    Check ground points behind both kick panels
     
  6. Travistyson1

    Travistyson1 Active Member

    Age:
    39
    Posts:
    33
    Likes Received:
    1
    Joined:
    Feb 16, 2017
    Location:
    Seminole florida
    Thanks guys I believe it is resolved. Checked the battery, and the ground on the firewall was loose. Tightened it up and she started right up have not seem the lights on since. I do still need to follow through and do the test to see what's draining the battery.
     
    Last edited: Jul 13, 2018
  7. 1955moose

    1955moose Full Access Members

    Posts:
    4,284
    Likes Received:
    738
    Joined:
    Nov 23, 2014
    You can do the same test with a volt/ohm meter set on milli amps, removing one fuse at a time. Theirs great videos online that can walk you through it.

    Sent from my N9131 using Tapatalk
     
  8. Travistyson1

    Travistyson1 Active Member

    Age:
    39
    Posts:
    33
    Likes Received:
    1
    Joined:
    Feb 16, 2017
    Location:
    Seminole florida
    I did a little bit of testing to find out if anything was still drawing on the battery. Ever since I fix the ground wire that was by the battery, all the problems seem to be resolved. Thanks for the advice guys
     
  9. 1955moose

    1955moose Full Access Members

    Posts:
    4,284
    Likes Received:
    738
    Joined:
    Nov 23, 2014
    If you've got a bad ground wire, the positive doesn't have a starting point. People think our vehicles power flow starts with the positive, when actually it starts at ground. That is why their so critical. They all need to be clean and tight. Glad you got it.

    Sent from my N9131 using Tapatalk
     

Share This Page