Noise thump from rear of 99 explorer after fast breaking

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MarkE - 31 Jan 2004 06:56 GMT

There is a Noise thump from rear of 99 explorer sport after fast breaking. 70,000 miles. If you stop slow it does not happen. If you break fast then ounce you stop completely something in the back area gos a load thump. What could it be? Thank You very much for any reply :)

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S - 01 Feb 2004 01:02 GMT

This is probably not your same problem, but I remember once a guy came into
the dealership I worked at with an explorer and a knocking noise in the
rear. Turns out he had a mud clump formed on the other end of the gas cap
tether up in the wheel well.

SW

> There is a Noise thump from rear of 99 explorer sport after fast breaking. 70,000 miles. If you stop slow it does not happen. If you break fast then

ounce you stop completely something in the back area gos a load thump. What
could it be? Thank You very much for any reply :)

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KANSAS SPEED & MARINE - 01 Feb 2004 20:48 GMT

Drive shaft pop, Ford in the old days would put a relief valve in the
front yoke to stop this but it has not been needed for years. As the
drive line comes together after a panic stop the drive shaft will snap
back when the vehicle comes to rest, all normal.

Ron

> There is a Noise thump from rear of 99 explorer sport after fast breaking. 70,000 miles. If you stop slow it does not happen. If you break fast then ounce you stop completely something in the back area gos a load thump. What could it be? Thank You very much for any reply :)

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wideglide01diespammers@cox.net - 01 Feb 2004 21:03 GMT

Ignoring his agents wishes,KANSAS SPEED & MARINE <rmboz@everestkc.net>
flung open the hotel room door and announced to the gathering crowd:

>Drive shaft pop, Ford in the old days would put a relief valve in the
>front yoke to stop this but it has not been needed for years. As the
[quoted text clipped - 4 lines]
>
>> There is a Noise thump from rear of 99 explorer sport after fast breaking. 70,000 miles. If you stop slow it does not happen. If you break fast then ounce you stop completely something in the back area gos a load thump. What could it be? Thank You very much for any reply :)

...how much fuel did you have in the tank? If it's less than half
full, you might of just heard the fuel sloshing forward after a hard
stop. That would explain it only happening when you brake hard.

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