Haven't verified it yet, but I think I might have a bad sway bar bushing in the front. Haven't had a chance to get it in the air and check it out. Could be strut mounts possibly. Clunking sound over bumps in the front left.
Curious if there are any polyurethane sway bar bushings available for our cars? When I had my '97 Civic, I had Energy Suspension bushings, but they aren't listed for the 99-03 TL on the ES website.

 

go by size of bar in mm and es or suspension dynamics has your part

try a web search

 

Bushing or endlink? Endlinks are the typical failure.

 

After the springs and shocks were replaced I heard a similar noise when turning, it turns out the B section of my exhaust pipe came off the hanger. Check your exhaust pipe.

 

I'll try going that route, thanks. What are the stock sway bar sizes F&R?

Haven't had a chance to get it in the air to check it out. I crawled under it to look a week or so ago, and the bar is a little loose left to right, but I couldn't get it to move up & down.

I'll check on that when I can get a chance to get it in the air.

 

if replacing the bar mount bushings- get MOOG brand end links too
Well worth the price

 

Well, got the car in the air. All the bushings and links look fine. Checked all over & couldn't find anything noticeable. I'm thinking maybe a bad strut now...

 

control arm bushings are common wearout item
You need to test parts with a prybar to resistance- visual wont always show whats bad

look for oil traces from shocks --leaking = dead
or bounce a corner of the car several times and let go--should bounce once more and stop

did you ck the motor mounts too? front could be at issue--look for oil traces there too

 

Should be able to get it in the shop again tomorrow. Will check on those items then.

 

did you look at the strut plate?

 

I'm hoping for a slow day tomorrow so I can get it in the shop and in the air to start checking around.
Was driving today, and going over speed bumps, no noise at all. But going over a bumpy road, it rumbles a little...

 

i had a rumble - took bumper cover off to do some unrelated work. i loosened the uper mounting brackets (under the headlights) and pushed them up as far as I could. once i replaced the bumper cover, my noise went away. you might try it next time you have the time.