Noise under passenger floor

fordboy67 · #1 (**permalink**) 05-15-2008, 11:05 PM

I am in the process of trading up from my Expedition to an Excursion. I test drove a 2002 4X4 with 110,000 miles. While on city streets I can hear and feel a slight rattle that seems to be right under the passenger side floor. Is this possibly a sway bar bushing or something possibly more severe? Any help would be appreciated as I am in the negotiating process. Thanks in advance.

kappysworld · #2 (**permalink**) 05-16-2008, 12:10 AM

Could be sway bar bushing, Loose bolt on the suspension, Leaf spring rattle. Loose fuel line. Good luck finding it. I have been chasing a thunk/clunk for a few months now

snurtle112 · #3 (**permalink**) 05-16-2008, 04:13 AM

my guess endlinks...=) some might agree

katiesdad7 · #4 (**permalink**) 05-16-2008, 08:28 AM

I believe that the exhaust is hitting towards the rear and you hear it under the floor. I had this on my 01 Ex with the V8.

X_Hemi_Guy · #5 (**permalink**) 05-16-2008, 10:44 AM

Rattle?...could be as simple as a heat shield...

The heat shields are simply tack welded on the corners and if a weld fractures...you hear the rattle...

If you can...check the heat shields...the fix is easy...either take off the loose shield...or get a big stainless hose clamp and crank her down...that's what I've done in the past with great results...

Or...it could be more serious as suggested above.

GOOD LUCK!
joe.

xr7390GT · #6 (**permalink**) 05-16-2008, 12:49 PM

Don't forget body mount, usually on driver's side feet however. More of a clunk. This was a problem on 2000 models. If its a V10 check the heat shield as mentioned.

eatfish · #7 (**permalink**) 05-16-2008, 02:31 PM

The running boards can rattle if they get loose. Especially over little bumps.

Ex'ed out · #8 (**permalink**) 05-18-2008, 10:22 PM

Happened to me as well...under the passenger side...was a worn end link.

fordboy67 · #9 (**permalink**) 05-23-2008, 09:30 PM

I think I finally found the noise, it is more of a squeek when beginning and ending motion cycles. I sprayed the body mount with a spray lubricant and after a few miles it got a lot better, all but eliminating the squeak. The mount is solid and tight, just squeaks. It got better after I lubricated it. Might try something a little more permanent, maybe a lithium grease lubricant spray? Any thoughts?