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Engine keeps cutting out

Discussion in 'Stock 1991 - 1994 Explorers' started by Dan R, February 6, 2018.

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    1. Dan R

      Dan R Member

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      City, State:
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      Year, Model & Trim Level:
      1993 Ranger 3L RWD
      I have a very annoying problem. Engine starts up and runs well. Then after about 10 min starts to cut out. Either when moving when it hiccups and restarts or when idling when it can be immediately restarted. The Check Engine light flickers on and off (1993 model OBD I). The voltmeter flickers a bit. I have replaced the fuel pump inertia switch and PCM relay to no effect. I have the alternator voltage regulator on order. Grounds have been checked. Anything else I should be looking at?
       
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    3. Dora 1993

      Dora 1993 New Member

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      Does it stutter when you try and drive it
       
    4. Dan R

      Dan R Member

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      It drives OK until it suddenly dies. Usually it can be restarted immediately.
       
    5. Turdle

      Turdle I bake stuff Staff Member Moderator Elite Explorer

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      Carefully remove the ECM, take off the cover and look for leaking, swollen capacitors, and/or bad solder joints on the circuit board. These can be repaired.
       
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    6. Cheddar Dan

      Cheddar Dan New Member

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      You might want to double clean your MAF if you haven't already.
      Good luck!
       
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    7. Dan R

      Dan R Member

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      I cleaned the MAF, didn't look dirty. I did notice that one of the electrical connector pins was white with corrosion. Cleaned it up put Noalox on the pins and it runs as before. This is odd as the connector is sealed with a rubber gasket but the corrosion was obvious. Thanks guys!
       

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