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GOOD VIBRATIONSLet the Beach Boys sing it, not your car |
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DRIVESHAFTS
Most people have trouble determining if the vibration in there vehicle is coming from the driveshaft or not.
There are typically two types of vibrations that most vehicles would have: a fast cycle vibration or a slow cycle vibration. To help understand this lets say we put a bucket of water on the passengers floor. If the vibration in the vehicle produces small ripples on the top of the water this would be considered a fast cycle vibration. This type of vibration is usually a drivetrain vibration, things like the driveshaft, motor or torque converter. If the vibration kind of puts waves on the top of the water. This type of vibration is a slow cycle vibration and usually is an axle or tire vibration.
JACK TEST
A simple way to do this is put the vehicle in question up on jack stands (make sure the vehicle is completely secure). Block the front tires and run the vehicle up to the speed you have the vibration at. Make sure you use the brake to stop the drivetrain before you put the car in park if its an automatic. If the vibration is a fast cycle vibration you may want to have the driveshaft checked for balance, or this may make no sense to you, but you may try indexing the shaft 180 degrees (just pull the shaft off the rear yoke and put it on the opposite way) what this does is change the resonant property of the driveline and in many cases it takes the vibration away. If you have a slow cycle vibration take the tires off the car (make sure you put lugs on the axle to keep the brake in line) and run the vehicle again. If the vibration is gone you now have to find out if its the rim or the tire and a good tire shop can help you with that. This is a simple test for any vehicle but please if your not completely sure of how to put the car on stands safely, bring the car to a certified technician to perform the test. If you want further help with understanding this process or want help understanding vibration problems please call or e-mail us. | |
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