Vibration while driving
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Joined: Jul 2005
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Vibration while driving
Hi,
I was wondering if someone has any idea what could be wrong with my Vette. It is a 78 w/ AT and when I am driving there is a moderate vibration but when you shift the car into neutral while driving the vibration disappears. Also if you reach a certain RPM and there is not much of a load or need for power the vibration disappears.
A friend of mine suggested it might be u-joints. Any thoughts?
I was wondering if someone has any idea what could be wrong with my Vette. It is a 78 w/ AT and when I am driving there is a moderate vibration but when you shift the car into neutral while driving the vibration disappears. Also if you reach a certain RPM and there is not much of a load or need for power the vibration disappears.
A friend of mine suggested it might be u-joints. Any thoughts?
Race Director
Joined: Feb 2005
Posts: 16,100
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http://www.tracyvette.com/vibrationdiagnosis.html
this guide can help...very difficult to determine cause in driveline...follow tips...make sure it is not an exhaust resonance..that usually occurs at 1500 RPM-3500 RPM...don't overlook tire balance...keep us posted on your tests...tip..follow "test drive/dianosis section first..."
Rich
this guide can help...very difficult to determine cause in driveline...follow tips...make sure it is not an exhaust resonance..that usually occurs at 1500 RPM-3500 RPM...don't overlook tire balance...keep us posted on your tests...tip..follow "test drive/dianosis section first..."
Rich
Last edited by rihwoods; Oct 5, 2005 at 10:08 PM.
Melting Slicks
Joined: Jan 2003
Posts: 2,817
Likes: 21
From: Somerset, NJ
Originally Posted by Vmaxkid
Hi,
I was wondering if someone has any idea what could be wrong with my Vette. It is a 78 w/ AT and when I am driving there is a moderate vibration but when you shift the car into neutral while driving the vibration disappears. Also if you reach a certain RPM and there is not much of a load or need for power the vibration disappears.
A friend of mine suggested it might be u-joints. Any thoughts?
I was wondering if someone has any idea what could be wrong with my Vette. It is a 78 w/ AT and when I am driving there is a moderate vibration but when you shift the car into neutral while driving the vibration disappears. Also if you reach a certain RPM and there is not much of a load or need for power the vibration disappears.
A friend of mine suggested it might be u-joints. Any thoughts?
Last edited by ffas23; Oct 5, 2005 at 10:17 PM.
Melting Slicks
Joined: Feb 2003
Posts: 2,529
Likes: 27
From: Auburndale Florida
2025 C2 of the Year ('64-'66) Finalist - Unmodified
St. Jude Donor '03-'05-'06-'07-'09
A U-joint is like a CV axle....a bad one WILL ALWAYS cause a vibration under any load. If the drive shaft is damaged or out of balance it will vibrate all the time.....best of luck
