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  1. F

    2000 I4 2WD Auto thumping, frequency increases with speed

    I'll take a good look at the rear end and go from there. If nothing, I'll definitely find a shop to check things out and diagnose. Thanks for the tips/advise on a used transmission. I'll look for one as you've suggested if it is determined to be the culprit.
  2. F

    2000 I4 2WD Auto thumping, frequency increases with speed

    I want to say it increases with road speed. It runs through gears (so the engine speed would decrease, right?) and yet the noise continues to increase.
  3. F

    2000 I4 2WD Auto thumping, frequency increases with speed

    Hello ExplorerForum message board, I'm trying to diagnosis (and fix) my father-in-law's 2000 Ranger 2WD I4 automatic pickup. I recently drove it (about 2 weeks ago); there's a thumping that started ~10 mph and increased with engine speed to the point that it was just a constant very...
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