Why is my motor Vibrating?
Thread Starter
Junior Member
Joined: Jun 2009
Posts: 18
Likes: 0
From: Beaufort, North Carolina
Car: 1989 Pontiac Firebird
Engine: 2.8L V6
Transmission: ?
Axle/Gears: ?
Why is my motor Vibrating?
I dont have a clue why my motor will vibrate when idleing but when i get up too about 1500 rpm it smooths out. ive replaced the plugs and the wires and still nothing.
any body got any ideas.
Car:1989 Firebird
Color: White
Motor: 2.8L V6
any body got any ideas.
Car:1989 Firebird
Color: White
Motor: 2.8L V6
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: Why is my motor Vibrating?
Motor mounts shot?
JamesC
JamesC
Supreme Member
Joined: Jan 2009
Posts: 1,126
Likes: 0
From: Columbus Ohio
Car: 91 Z28,64ImpalaSS4094spd,67 Galaxy
Engine: Dart 415Profiler hd,cmprlrs,Hlly750
Transmission: Built 700R4, 3200 stall
Axle/Gears: 3:89 Moser 9"
Re: Why is my motor Vibrating?
Harmonic balancer coming apart? Mine did once!
Supreme Member
Joined: Jul 2005
Posts: 2,123
Likes: 0
From: North Central Mass.
Car: 1985 Berlinetta
Engine: Megasquirted TPI
Transmission: Transgo 700R4
Axle/Gears: 3.42
Re: Why is my motor Vibrating?
What they said.
Could be imbalanced compression or a bad plug as well !
Could be imbalanced compression or a bad plug as well !
Thread Starter
Junior Member
Joined: Jun 2009
Posts: 18
Likes: 0
From: Beaufort, North Carolina
Car: 1989 Pontiac Firebird
Engine: 2.8L V6
Transmission: ?
Axle/Gears: ?
Re: Why is my motor Vibrating?
The Motor mounts are fine on it. All the plugs are brand new and the wires are as well also the harmonic balancer seems fine. It just sits there and shakes in park until i rev it up to about 1500 rpm. then it smooths.
Supreme Member
Joined: Jan 2009
Posts: 1,126
Likes: 0
From: Columbus Ohio
Car: 91 Z28,64ImpalaSS4094spd,67 Galaxy
Engine: Dart 415Profiler hd,cmprlrs,Hlly750
Transmission: Built 700R4, 3200 stall
Axle/Gears: 3:89 Moser 9"
Re: Why is my motor Vibrating?
Check the torque convertor bolts it or flywheel may be loose???
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