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98 Mountaineer Crankshaft Position Sensor

Discussion in 'Stock 1995 - 2001 Explorers' started by jgonzalez0010, June 28, 2011.

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    1. jgonzalez0010

      jgonzalez0010 New Member

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      Hello all, this is my first post on this site. I've gotten a lot of great info from everyone on here so first off I wanna thank you all for the help you've already given me.

      I'm trying to replace a Crankshaft Position Sensor on a 98 Mountaineer 4.0. It's having a hard time starting. Every time I crank the engine it won't start until I let go of key and put into run position then crank a second time. Starts every time.

      The issue I'm having is trying to unplug the wire from the old sensor. Dumb problem right. I have tried to remove sensor first however the wire plug is blocking the bolt so it will not allow the sensor to be removed until the wire is removed first.

      As you can see in the pics, the wire connector has some sort of metal clip around it. Never seen this before so I'm unsure of how to disconnect and I don't want to force it off.

      Anyone have any ideas? Thanks for any info!!
      Joe

      [​IMG]
       
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    3. Turdle

      Turdle Freelance Stuntman Staff Member Moderator Elite Explorer

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      That wire retainer will pull straight up and off--the unseen ends are not connected and will make a spring tension to snap back into place. Beware it may shoot off and end up on the other side of the garage-
       
    4. jgonzalez0010

      jgonzalez0010 New Member

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      Thanks Jon, worked out perfectly. Was able to get it changed out. However I'm still having the same issue :mad:

      Almost ever time I go to start, the engine cranks but doesn't start. If i release key into the run position and wait a sec, then crank it again it starts right up.

      I'm starting to lean towards the starter but it cranks fine, engine is definitely turning over no problem. Any ideas?
       
    5. snoranger

      snoranger Well-Known Member

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      If it cranks normal then its not the starter. The only way it could be a starter problem would be if it cranked slowly, or not at all.
       
    6. Turdle

      Turdle Freelance Stuntman Staff Member Moderator Elite Explorer

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      OK I am thinking the fuel pressure needs checked.

      Next time you try to start it, turn the key to "run" and back off, then try turning key all the way to start. I want to see if just another fuel pump priming cycle gets it started.

      edit
      when it is running does the check engine light illuminate?
      Does the check engine light illuminate when you turn the key on and go out when engine is started?
       
    7. jgonzalez0010

      jgonzalez0010 New Member

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      Engine starting issue...won't start on first crank..but starts on 2nd crank

      That's exactly what I thought. It cranks no problem, battery is good.

      Ok tried that. and it started right up. However I have noticed that when it fails to start the first time and I put key into "run" then after a few seconds I turn key to "start" again it starts right up. I'll turn it off and retry and it always seems to start right up. Then again if the trunk has been sitting for more than 20 mins it starts all over again. Won't start on the first crank, release key to "run" then back to "start" and it starts right up.

      Engine light does not illuminate when engine is running.

      The light does come on when key is in "run" and goes out immediately when engine is running.

      One other thing, may or may not be related. I cannot figure out where this engine noise is coming from. It sounds like it coming from the belt area front bottom of engine. It been making this noise for a few weeks now.

      It almost sounds like a train going down railroad tracks. Gets faster as engine revs higher. Hopefully you can get a feel for what it sounds like in my video. I was gonna have this issue brought to a few shops to see what their mechanics have to say about it.



      Again thanks a lot guys!!
      Joe
       
    8. Turdle

      Turdle Freelance Stuntman Staff Member Moderator Elite Explorer

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      Timing chains---:(

      Search for death rattle. Unfortunately this is not good.
       

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