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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.


 
 
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Old Mon, March 30th, 2009, 12:07 PM
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Jackpine Jackpine is offline
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Henry, I'm sorry if what I said sounded like the "idiot treatment". It was just that I was not sure if you were getting repeated "thumps" (like: thump, thump, thump, ...) or only one.

In your last post, what you described really DOES sound just like what I've experienced now and then. I felt it maybe twice on our recent trip to and from California, in moderate traffic, when I would accelerate to move quickly into a passing lane. I can hear it and I can feel it, and it sounds like it's something going on behind me.

I wonder if there's any way it could be coming from the differential? (I assume you have traction lock, like I do)?

- Jack
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