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2002 Ford Explorer Question: violent thumping

 

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dave7402, 4.6L V8, Lewis Center, OH, February 12, 2011, 12:32
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as this vehicle warms up i hear a whine noise - sorta like a ring and pinion - then it starts. a loud and violent thump that shakes the whole vehicle. in ohio it has been very cold so it took longer to start. now (at 35 degrees) its only a few minutes. it is so violent i can not tell from where it comes from ie. front, rear, left or right.

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  • Answer #1

    DaveJHM February 12, 2011, 22:17
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     Master

    It's very hard to tell through this medium. Really, you will need to have someone first hand look at it and give you an opinion of your symptom. My immediate thoughts are of transfer case issues or axle issues. But the thump and noise would only happen when moving. I can't tell honestly.

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    Visitor, July 19, 2011, 05:50

    Dave jhm, i'm sorry for getting back so late on this issue, but, truthfully i just gave up - for a while. i did a similar search and came back to my original question,
    anyway, i failed to mention that the vehicle is moving. once this noise and "thumping" start it does not stop until i get back down below 15 mph. turns to the left at slow (15) seem to cancel it out, whereas turns to the right - not so much. i'll brake it down to 10 mph and it gives one last louder bang - then i can drive thru my neighborhood without all the stares.
    what do you make of the other response that says he had the same problem and his mech. sprayed the cold engine idle valve with wd40. just seems too easy.?
    oh yeah, this thumping continues even if i slip the tranny into neutral and coast.

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  • Answer #2

    Visitor, February 18, 2011, 15:17

    HAVE YOUR "COLD ENGINE IDLE" VALVE CHECKED OUT...I HAD THE SAME PROBLEM, AND I LIVE IN THE SOUTH...MY MECHANIC SPRAYED WD-40 ON IT AND IT HAS BEEN PERFECT SINCE...GOODLUCK...REMEMBER, IT IS A FORD...AND FORD MEANS "FIX OR REPAIR DAILY"...

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