15-30mph vibration
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15-30mph vibration
2002 f250 crewcab 8ft bed 4x4 7.3l. 83,000 miles, not worked hard...when im driving i'm getting a vibration through out the truck. not excessive in steering wheel. vibration starts around 15mph and fades around 30. the vibration is worse with more load on truck, either acceling up a hill, or load in bed or just acceling hard. no obviously bad u joints, carrier bearing looks good, tranny mount looks good, all weight still on wheels. also, i jacked up rear and ran it through gears. vibation very faint but there... if i held brake and hit gas while on th jack the vibration was a bit worse. also, i didnt see any weight fallen off drive shafts....on a side note, occasionaly when im driving as ,i believe, the truck is either shifting into od, or the tourque converter is doing whatever it does, there is a quick groan and slight vibration then goes away...also is more noticeable when towing. groan last only a second or two.anyways, they may be related, might not.....thanks for any suggestions.
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