Intermittent Oil Light, Steering Booster, Pass Window, Door Ajar

Lincoln LS

  1. 2002LSV8

    2002LSV8 LVC Member

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    Intermittent Oil Light, Steering Booster, Pass Window, Door Ajar

    2002 Lincoln LS V8 Base

    PROBLEM - Intermittent Issues As Follows:

    Oil Pressure Light on dash comes on when starting car and the following don't work
    Pass Front Window doesn't work,
    Horn doesn't work
    Power Steering Booster not working - Harder to turn, but can turn
    Other things may not work too, but haven't noticed, or checked
    Note: If I disconnect the battery overnight "sometimes" it clears these issues up,
    but lately this does clear it up all the time.

    NOTE: Sometimes Driver's Door Ajar Buzzer comes on along with the above issues
    (If I disconnect battery for 10 mins, Door Ajar does not come back on)

    NOW, the intermittent problems are constant (except Door Ajar is still intermittent)

    Also, just started getting Check Engine Light with code P0402Exhaust Gas Recirculation Flow Excessive Detected

    Just replace battery (battery with hose), also had a scan done to verify battery & charging
    system are working properly.

    Car runs fine, haven't noticed anything out of the norm.

    Any idea of where to troubleshoot?
     
  2. AmsterDutch

    AmsterDutch Dedicated LVC Member

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    I would suggest testing the oil pressure just to make sure the oil pump is working properly...this would be crucial ...if the oil pressure is low and the illumination light is warning you (that is if the system doesn't have a short somewhere) then I would suggest not driving the car because you could lock up the engine...oil pressure test doesn't cost a whole lot at a Indy shop
     
  3. 2002LSV8

    2002LSV8 LVC Member

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    I understand what you're saying, but whenever the oil light is on, I get the other issues too, which leads me to believe it's something else causing this. I never get just the oil light without the others issues at the same time. I either get them all, or none of them.
     
  4. AmsterDutch

    AmsterDutch Dedicated LVC Member

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    Got you.
     
  5. 2002LSV8

    2002LSV8 LVC Member

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    Thanks for the reply.........
     
  6. joegr

    joegr Dedicated LVC Member

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    Sounds a bit like a loose ground connection. Maybe pull the kick panels and clean and tighten the ground connections you find there? (Disconnect the battery negative first.)
     
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    • 2002LSV8

      2002LSV8 LVC Member

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      Passenger Compartment Fuse Box:
      F6wR9tq.jpg
      Excuse my ignorance about anything electrical, guess that's why I'm here..lol
      Are you talking about the two areas I have boxed in blue? Do I need to disassemble the plugs completely, then clean?

      Also, just noticed that the radio stays on after I turn the car off and close the door (stays on for 10 mins), it use to always turn off when the door was opened.

      Could these issues have anything to do with an "ignition switch" going bad?

      Thanks for your prior reply, very much appreciated...
       
    • joegr

      joegr Dedicated LVC Member

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      No, not any of that. I'm talking about the wires that go to lugs that are bolted to the metal of the car.
      The radio staying on is an issue with the data bus.
       
    • 2002LSV8

      2002LSV8 LVC Member

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      I just noticed all my front lights (headlights, turn signals, flashers, parking) are not working either. Just noticed now because I seldom drive at night.

      It's starting to seem like the FEM. What's you thoughts about the FEM?
       
      Last edited: Jun 23, 2020
    • AmsterDutch

      AmsterDutch Dedicated LVC Member

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      FWIW....The FEM is expensive and the cluster is expensive, You could always have a diagnostic scan to find out for sure which one is at fault. I'm thinking $100 dollars at most ...at least you will know what direction to go
       
    • 2002LSV8

      2002LSV8 LVC Member

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      Agree, that was/is my next step, appt set for next Wednesday (7-1-2020) for the dealership, boy I hate going there...lol

      Thanks.....
       
      Last edited: Jun 23, 2020
    • 04_Sport_LS

      04_Sport_LS Dedicated LVC Member

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      I agree with Joe about possibly a ground issue.

      There's a main one in the trunk... down in the spare tire well that gets rusted up pretty bad.

      Check for white powder corrosion at the wires coming off the battery... that go to the relay/fuse box in the trunk.

      I realize that's at the opposite end of the car that is having problems... but sometimes bad grounds can do funky things where you least expect it.
       
    • 2002LSV8

      2002LSV8 LVC Member

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      Checked that one, and a few others, but they are all tightly secure and look new. I did disconnect them & sanded the sides, but still the same issues.

      Thanks for the input.......
       
    • joegr

      joegr Dedicated LVC Member

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      Yes, the FEM is a possibility. I disagree about it being expensive. They are probably $20 at pick-n-pull junkyards.
       
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      • 2002LSV8

        2002LSV8 LVC Member

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        I searched online, found a couple on eBay for around $80-$100 for the same FEM I have (YW4T-13B525-AB) and they have a 30 day return, couldn't find them anywhere else.

        Looks like I'll probably go ahead and get one and try it, before going to the dealership.

        Anything I should look for when buying one, or installing it (disconnect negative cable first)?

        My FEM:
        Eek7Jyh.jpg
         
      • joegr

        joegr Dedicated LVC Member

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        Yes, always disconnect the battery first, and always disconnect the battery negative first (or only) to disconnect the battery.
         
      • 2002LSV8

        2002LSV8 LVC Member

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        Never mind, found one with identical numbers.......

        PdPXkYI.jpg
         
        Last edited: Jun 24, 2020
      • joegr

        joegr Dedicated LVC Member

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        It should be, as long as it is from the same generation (2003 is a possible exception here), and same country (unless you don't care about DRL).
         
      • 2002LSV8

        2002LSV8 LVC Member

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        Thanks.......I did find one with same numbers.....
         
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        • 2002LSV8

          2002LSV8 LVC Member

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          UPDATE:
          Ordered a used FEM on eBay ($40.87 shipped - 1 yr warranty).
          I came today, so I did an R&R, connected the battery cables, started the car..........Surprise, everything is working again the way it should. Took it for a drive and no issues.

          Who would have thought the FEM could cause so many issues.

          Wanna say Thanks to everyone for their input, it saved me a trip to the dealership, which is always a good thing...............
           
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          • AmsterDutch

            AmsterDutch Dedicated LVC Member

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            That's great to hear! You were correct on your assumption...between Joegr and 04' Sport we have a Dealership right here on the Forum :)
             
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            • 2002LSV8

              2002LSV8 LVC Member

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              FINAL UPDATE:
              The "Check Engine Light with code P0402" was a separate issue that just so happened to get at the same time.

              P0402 - I replaced the DPFE, but that didn't work, then cleaned the EGR Valve, and that didn't work either, then replace the EGR Valve (with in gasket that came with it), and that worked..........
               
            • 04_Sport_LS

              04_Sport_LS Dedicated LVC Member

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              Good to hear it's back in good working condition. Usually... the typical EGR codes that get thrown.. are P0403 and P0408.... but never say never. :rolleyes:
               
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