Still need help with vibration noise

[ONEBADPNY]

I am still trying to find this vibration noise on my car and i cann't figure it out. It only makes this noise in every gear and at 2400 rpm. No where else will it do this not even reving the motor standing still. So far i have changed the following: Bad rear shocks, Crossmember bushings, motor mounts, and check everything by tapping on things with a hammer (which nothing stuck out like it was the problem). I am coming to a dead end at what to look for next. I am starting to think that maybe the drive shaft or mufflers going bad, but then i would think that it would make this noise elsewhere not just one spot in the rpms. A friend rode with me and thought it was coming from the rear but i think it sounds more like the middle to the front of the car.

Just looking for some more help on what i could look at. Got do be something in the driveline i guess.

 

[Daggar]

-- Moved to Tech --

 

[Jason 302]

Have you checked your transmission crossmember? Sometimes the mounts on the ends can rust out and become loose.

 

[gcwh02]

had the same thing around the same RPM and it was my exhaust rattling against my bumper. Check it out and make sure its in its hangers and its tight

 

[Aryan15]

vibrations

One way to troubleshoot driveline noises is to put the rear up, block the front wheels, and get the rear wheels going in the air. Then you can listen under the car. Its worth a shot.

 

[ONEBADPNY]

i have check the cross member and the exhaust. both are fine. unless my mac mufflers are rusting out from the inside. i tried one time to jack it up but it would not make the noise when i did. don't understand why. i will try that again though to see. thanks guys

 

[bullitstang1313]

Do you feel a vibration or is it just a noise? If it only does it in gear then it could have to do with transmission or rear axle.

 

[ONEBADPNY]

i can feel the drivetrain vibrate around there but i hear a noise. i took it for a ride just now and it stopped doing it after i drove it for a bit. stop then left again and it was making noise then stopped. now it is not doing it all the time. i am really lost now.