Need help ASAP strange noise!!!!
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Supreme Member

Joined: Aug 1999
Posts: 2,441
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
Need help ASAP strange noise!!!!
After a drive today, 250 miles, a new nosie came up when I starts braking and gets to 20 mph, a "brumming", "vibration" sound occurs, at it get worse if I turn the steering wheel....It "vibrates" at idle sounds like hell!!! but If I put it in "p" it stops??? and when I drive away again its starts but little quiter......
It sound like a big layes that is grounding.....Is it my transmission???
Any ideas??
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GTA -89:Free flow muffler,dual 3" HF cats, Edelbrock headers, Vette heads, 1.52 RR 7/16, ZZ-9 cam, Big Mouth, AS&M LTR, !plenum, 52 TB, MSD 6AL, TPIS level V prom, Superior shift-kit and all the minor mods, a Canfield headed 383 in the works!! ready May 2001...ok..june...july..and with Accel DFI....looking for SR or miniram....
http://www.itv.se/tacs/members_cars/m279/m279.html (Swedish Trans Am Club)
It sound like a big layes that is grounding.....Is it my transmission???
Any ideas??
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GTA -89:Free flow muffler,dual 3" HF cats, Edelbrock headers, Vette heads, 1.52 RR 7/16, ZZ-9 cam, Big Mouth, AS&M LTR, !plenum, 52 TB, MSD 6AL, TPIS level V prom, Superior shift-kit and all the minor mods, a Canfield headed 383 in the works!! ready May 2001...ok..june...july..and with Accel DFI....looking for SR or miniram....
http://www.itv.se/tacs/members_cars/m279/m279.html (Swedish Trans Am Club)
Might be as simple as a torque converter, not that thats simple but its better than the whole trans... Otherwise that sux
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89 Firebird Formula
5.0 TPI T-5 WS6 G92 dual cat exhaust 3.42 posi New Grant signature series steering wheel (sweet), Kenwood head unit with Infinity speakers, Accel cap, rotor and wires, AC Rapidfire plugs, K&N Filter, Flowmaster 80 series muffler w/ full 3 inch exhaust
New best run 14.8 @ 93mph
------------------
89 Firebird Formula
5.0 TPI T-5 WS6 G92 dual cat exhaust 3.42 posi New Grant signature series steering wheel (sweet), Kenwood head unit with Infinity speakers, Accel cap, rotor and wires, AC Rapidfire plugs, K&N Filter, Flowmaster 80 series muffler w/ full 3 inch exhaust
New best run 14.8 @ 93mph
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