LT1-LT4 Modifications 1993-97 Gen II Small Block V8

vibration under dash

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Old 01-13-2012, 07:45 PM
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Default vibration under dash

my 95 z28 has a slight vibration just underneath the dash at 2100 rpm and its annoying.replaced u joints,tranny mount, motor mount, and just nw the flywheel and a different torque converter, nothing has fixed it. any suggestions? thanks
Old 01-13-2012, 08:33 PM
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describe it, other than being annoying and at 2100 rpms... maybe get a video? speed related, or not... load/no load.... what...
Old 01-14-2012, 12:54 AM
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It's runs fine, not missing or nothing, but at 2100 rpm it's shakes the change in the console. Not real bad but u can feel it in the transmission panel. U can feel it the most at 70-75 mph
Old 01-14-2012, 10:04 AM
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Mine ended up being the weights fell off my driveshaft. Good luck!
Old 01-14-2012, 11:52 AM
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its not in the drive line. it does it at an idle....
Old 01-14-2012, 01:11 PM
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well, just take a look around, if it is pretty minor might just be something rattled loose... F-Body cars arent exactly known for their great ride quality and superb fit and finish... mine rattles and squeeks and thumps... most of which is my own doing but it isn't your grand dad's caddy.
Old 01-14-2012, 01:31 PM
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Well I know it has gotten worse. And pretty sure it's at the engine somewhere just don't know where. It ain't the pipes, or anything that rattled loose. U can hear a lil tick sound now in the same area.
Old 01-14-2012, 01:41 PM
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Exhaust pipe against the body?
Old 01-14-2012, 01:50 PM
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or an exhaust leak?


get to checkin around under the car for any rubbing, or anything very close to the underbody... also, my car was notorious for transmission mounts... would start as a thud on accell and eventually end up as a "rattle"
Old 01-14-2012, 03:03 PM
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the tic sounds like its in a rotation. and no the exhaust isnt aginst the body. that was the first thing i fixed....
Old 01-14-2012, 09:04 PM
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get down with a stethoscope and find it man, obviously you are beyond simple fixes thus far and will probably have to tear into something to find it... pull inspection cover on trans and look for signs?
Old 01-15-2012, 04:17 PM
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What about the little Balancer on your drive shaft? Its right after the tail shaft. Is it cracked or missing rubber?
Old 01-15-2012, 10:43 PM
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um no. i havent checked the drive shaft really cause it vibrates setting in park.



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