rattle in dash speeds up with rpms

[Thieu]

So I've read and searched about the infamous dash rattle that some 240s are plagued with and of course mine has it too. It sounds like it's coming from the center vents and to the right of the cluster. What's weird is that the rattle speeds up as my rpms climb. It's really annoying. I thought it could be my valves or something, but reving the engine under the hood leads me to believe that this is not the problem. I also thought it could be the brake lines on the firewall vibrating but it wasn't... I also read that it could be the EGI harness rattling, but I have no clue where to find it and yes I have searched...

So now I'm a bit lost... Should I take my dash apart and try to pinpoint the problem? I was thinking... how does the tach work? I know it has a harness that hooks up to the gauge cluster, but is there a mechanical something or other that could be the problem?

I keep having to have the music pretty loud to be able to ignore the rattle...

SOMEONE HELP ME!!!

[DRFT]

yea take it out and take a look @ it, my dash has the rattle too. recently my digital cluster started doing that too!!

[driftz240sx]

Whenever I hear my dash rattle i usually just hit it and it goes away. Very rare that it does rattle though.

[twitchy]

trouble with that rattle (mine happens over 5000 rpms so not very often!) is that its hard to find out where its coming from exactly. The only way to check accurately is to Make the rattle occur which, in my case, was involving revving the piss out of the engine. So this one time i set my cruise control to 70 mph but i left the car in second gear. Then I started trying to disassemble the instrument cluster and I got pulled over. Apparently thats illegal. Good luck to you though

[Burmonster]

trouble with that rattle (mine happens over 5000 rpms so not very often!) is that its hard to find out where its coming from exactly. The only way to check accurately is to Make the rattle occur which, in my case, was involving revving the piss out of the engine. So this one time i set my cruise control to 70 mph but i left the car in second gear. Then I started trying to disassemble the instrument cluster and I got pulled over. Apparently thats illegal. Good luck to you though

ahaha, thats pretty funny. what did the cop say??