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Codes and no start

Discussion in 'Discovery' started by stb616, May 28, 2020.

  1. remember5

    remember5 Full Access Member

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    I put in an aftermarket fuel pump and ever since it turns over and may start and may not. My diagnosis was the Beck Arnley pump wasn't holding pressure to the rail but I'm second guessing that because sometimes I can turn the key and I hear the fuel pump running and sometimes not. I'm going to go through the manual one more time to see what might be going on. I don't have a shreader valve in the fuel rail to check pressure.
     
  2. stb616

    stb616 Member

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    If it's a frequent thing, put a spark tester on it. Or pull a plug wire when it's being moody and rule out a no spark issue. If you've always got spark, it's going to point you back to that pump.
     
  3. mark D

    mark D Full Access Member

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    SO it was a faulty ECM? that would be a good reason for multi spark failure across both coils.

    Typically I have found most of the Discovery's up for sale cheap are electrical issues and the local mechanic has plugged one new part in after the other until the owner gets tired of paying for it and sells the rig.

    Be sure to check your plug wires and coil packs because they can take out an ECM. Which may be the reason you ECM failed in the first place. You may be replacing it again if you have grounding wires of a bad coil pack doesn't hurt to ground a wire to the frame and drag the other end over the plug wires and coil packs to see if their is a spark jump. Of course do it in low light so you can see the spark jump.
     
  4. stb616

    stb616 Member

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    No. It appears it was a $25 crank sensor.
     
  5. mark D

    mark D Full Access Member

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    Great, Glad to hear it.

    I bought a perfect 01 Disco for 1200.00 from a soccer mom A while back, because Her mechanic couldn’t find the problem.

    Same thing, a crank sensor. They get pretty hot where that are located and they fail.

    good catch.
     
  6. stb616

    stb616 Member

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    I hate when searching and people don't follow up.

    We're going to officially say it was just a crank sensor that caused all the misfires and no start. All is well in Roverland for now.
     

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