internal resonance

**grouch0jr** · 02-29-2008, 02:19 PM

driving home from work yesterday, i started hearing a vibrating in my car around 1600-1700 rpm. it just suddenly started, ie it didnt happen on the way to work, or ever before. i tried to figure out what it was, but wasnt in the car long enough. anybody else ever experience anything like this?

how the hell do i delete a thread? i wanted to put this in the firebird section, but im an idiot.

**jujofields** · 03-15-2008, 12:01 AM

I have the same issue...once i get up higher in rpm's though, the vibrating/resonance stops....I'm trying to figure out what's going on

**JoshieDoom** · 03-15-2008, 12:44 AM

I think its from the drone of the engine.. ive got it too.

**2-bowties&abird** · 03-15-2008, 05:45 AM

mine does it really bad, straight pipes though. around 50ish it drones bad. once i get to 60 in 6th it mellows out.

**jujofields** · 03-15-2008, 01:42 PM

Yeah, I just changed a lot of intake & exhaust components to aftermarket pieces and with the new, less restrictive setup the drone/vibration has increased.

**joejenkinsglass** · 03-15-2008, 04:04 PM

Originally Posted by grouch0jr

driving home from work yesterday, i started hearing a vibrating in my car around 1600-1700 rpm. it just suddenly started, ie it didnt happen on the way to work, or ever before. i tried to figure out what it was, but wasnt in the car long enough. anybody else ever experience anything like this?

how the hell do i delete a thread? i wanted to put this in the firebird section, but im an idiot.

sounds like it may be the u-joint

**JoshieDoom** · 03-15-2008, 08:06 PM

I know mine are bad.. Im taking out the driveshaft tomorrow if I wake up early enough..

**joejenkinsglass** · 03-15-2008, 08:19 PM

Originally Posted by JoshieDoom

I know mine are bad.. Im taking out the driveshaft tomorrow if I wake up early enough..

dont put it off if it fails you may be in for a ride and the car may be a mess when your done

**JoshieDoom** · 03-16-2008, 10:45 AM

I know i work all the damn time so today is my only option to do so.. My outer tie rod end was so bad. I changed it yesterday.. Ujoints and a polished driveshaft comming up today... I threw the u joints in my truck after doing a burnout and it cost me a transfer case and a driveshaft..

**joejenkinsglass** · 03-16-2008, 12:37 PM

sometimes the cheapest things cause the most damage

**jujofields** · 03-20-2008, 12:07 PM

Originally Posted by JoshieDoom

I know i work all the damn time so today is my only option to do so.. My outer tie rod end was so bad. I changed it yesterday.. Ujoints and a polished driveshaft comming up today... I threw the u joints in my truck after doing a burnout and it cost me a transfer case and a driveshaft..

oh damn!

**jujofields** · 03-20-2008, 12:08 PM

As far as the squeaks and rattles inside the car, I'm sure a good set of SFCs would fix the problem....I doubt it'd do anything for internal resonance though LOL...

**grouch0jr** · 03-20-2008, 02:29 PM

my driver seats squeaks too, but its only when im squirming around.

**jujofields** · 03-20-2008, 04:06 PM

Mine's the opposite: the passenger seat squeaks sometimes.

**grouch0jr** · 03-20-2008, 05:16 PM

i think its just because im fat, haha.

**OhTwo** · 03-24-2008, 05:57 PM

Don't know if this is your probem but I had a vibration noise that turned out to be the heat shield over the gas tank. There is another piece over the tail pipe that has a sheet metal tab that fits into the other heat shield piece. I used high temp RTV and forced it between the pieces. It's been fine with no resonance for more than 2 years.

**jujofields** · 03-28-2008, 11:23 AM

While doing some basic maintenance under my car last night, I took a look at all components of my exhaust system. I found that my cross brace was rubbing slightly on the Y-pipe. I took the brace off & bent it a little bit for clearance. After putting it back on and driving my car, some of the sounds I had been hearing were completely eliminated.