Hi, I needed some advice.
I've isolated a frequent, loud, clunking noise, to the trunk latch, while going over bumps.
When I try to shake the trunk lid while its closed, i can hear it knocking, not as loud but identifiable.
I've still got the 2 rubber bumpers and 2 springs on the trunk lid. 1 spring is missing the rubber grommet, i put a piece of cardboard just so it doesn't scratch.
I've also taken off the stock trunk struts.

I've gutted everything from the trunk and rear dash and side panels, tracking down various noises. This one is loud. No issues with it locking, unlocking or sticking.
2003 mustang, 54k miles

 

If you have isolated the noise to the lock and it is really loud, price a new lock and replace it.

 

I'm not sure a new trunk latch would fix the problem, it doesn't seem common and the part is hard to find.
I've uploaded a few videos to help me explain.
The clunk coming from the lock assembly: The grommet and spring: An observation:

 

Try putting some tape on the bar that catches the latch. Seem that there is too much play in that area. Is the bar securely fastened. Replacing your bumpers and using a stronger spring may also help your problem,
That would get on my last nerve hearing the lock mechanism move when I went over a bump.

 

I used electric tape, it helped a little bit i think, the issue was still present, the tape gets ripped with the movement after a little driving.

 

Can anyone with a SN95 shake their trunk lid (while closed) to see if it has play and knocking?
Like the video i posted above Does your locking mechanism also show these characteristics from the other video?
I probably need a new trunk latch but it would be great to confirm.