97 Explorer 4WD "thumping" at 90mph.

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Mar 23, 2006 | 02:40 AM

jacobsk

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97 Explorer 4WD "thumping" at 90mph.

The 4wd thumps at +/- 90 mph and locks up as if the 4wd is engadged, but then releases agian this will continue to 100mph, is this due to the speed or the wheels. This did happen from 60 mph, but we replaced the VSS sensor and gear RH19 witch moved the thump to 90mph. We replaced the VSS and gear for error code P0503 it has helped but not totally.

Mar 23, 2006 | 05:08 AM

z28dug

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I think that's a warning that 4x4 SUV's aren't meant to be driven 100mph. You might consider trading it for a nice Mustang GT or Pontiac GTO.

Mar 23, 2006 | 10:48 AM

4.0 Beast

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From: Gilbert, AZ

i've hit 120mph in my 97 X 5.0. i have the AWD option and its as smooth as can be......

Mar 23, 2006 | 05:03 PM

bcjim

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Quote:

Originally Posted by z28dug

I think that's a warning that 4x4 SUV's aren't meant to be driven 100mph. You might consider trading it for a nice Mustang GT or Pontiac GTO.

I will second that.

Mar 23, 2006 | 07:16 PM

JerrySimm

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From: Pauline, South Carolina

Are all of your tires properly inflated and have very close to the same wear? Any diameter difference will be exagerated at the higher speeds. My '03 can hit those speeds and remain smooth.

Mar 24, 2006 | 10:43 AM

therealulysses

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From: Near Hemet, CA

I had to go an look at the speedometer on my '97 and was surprised to see that it goes to 120. My '91 only goes to 85 and that's faster than I care to go in it. The main difference on these two vehicles seems to be the front suspension. Do torsion bars really make that much difference on high-speed handling?

Mar 24, 2006 | 11:12 AM

4.0 Beast

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From: Gilbert, AZ

you darn right they do...torsion bars are awesome. i had a '92 that had a speedo that went to 85 mph... on more than one occasion i was pegging the needle so i know i was hitting 100+ mph. wasnt very stable but i didnt feel like i was in imminent danger... my 97 at those speeds is much more comfortable