gen4 vibrating

My 92 auto lude has a vibration when I lift the throttle at 40 to 60 or so. It sounds like sheetmetal vibrating and lasts a few seconds or untill the throttle is opened to stop deceleration (is that a word). I found the exhaust pipe rubber hanger off on one side and put it back on but it still is doing its thing. Help its driving us nuts.
oldlude

I had the similar problem with my 92 Lude several years ago. Turned out to be a loose heat shield above the catalytic converter. My mechanic fixed it and it's been fine since.

thanks guy, i found some stuff that looked like it may be cutting up, but none of it helped after i repositioned it. i'll look at that shield. hey i can fix those intermittant ac problems.

Not sure if its the same but I had a similar problem with mine and it turned out that the bracket holding up the exhaust near the block was cracked. Quick/crappy weld fixed them problem.

Thanks, that would be hard to find!!!!!!

Been out of pcket for a while, but Look i found it, the catalytic converter has a rattle inside it. Thanks for the help. This one puzzled me.