Thunking rattle

[uabchris]

I have researched the site with no close answers. I have a thunking rattle that sounds like a deep wall socket in my rocker panel (like if you dropped it from a 1/2 inch high inside rocker) , low in the car behind the seats, most prominent on drivers side. only happens over certian road imperfections like small potholes, expansion joints, train tracks, etc. Happens with top up or down, but worse with top up. Could it be the conv. top cover between the window and deck lid?

Any ideas? thanks, Chris

[Charlestonboxster]

I have researched the site with no close answers. I have a thunking rattle that sounds like a deep wall socket in my rocker panel (like if you dropped it from a 1/2 inch high inside rocker) , low in the car behind the seats, most prominent on drivers side. only happens over certian road imperfections like small potholes, expansion joints, train tracks, etc. Happens with top up or down, but worse with top up. Could it be the conv. top cover between the window and deck lid?

Any ideas? thanks, Chris

I have a very similar thunking rattle, passenger side, exact same symptoms as yourself.

I believe I hear it louder with the top up simply because of better sound acoustics, and it's not the top cover system.

Have not found the problem yet, a discussion on another thread indicated it may be a controller arm or something like that.

(I'll look it up)

I removed a wheel and "Shaked" the controller arm hard but it did not seem to budge.

Perhaps I did not shake hard enough. Diagnosis TBD...

79k miles on my 98.

[Charlestonboxster]

Found the thread, rear control/track arms may be the culprit?

http://www.renntech.org/forums/index.php?s...amp;#entry74467

Edited August 7, 2007 by Charlestonboxster