vibration under acceleration
#1
vibration under acceleration
My truck shakes under acceleration but as soon as I let off the pedal the vibration goes away. I checked my brakes but they are new, u-joints are also new. I had a shop rebuild m y front differential and drive shaft a few months ago. Could a bad tire do this? I h ave a 6 inch lift and 325 tires. Any help is appreciated.
#2
#3
#4
Is there any whining from under the truck... or in front? Is the vibration in the wheel or in your seat? Is it there if you let off the throttle at 65 MPH and hit the OD button? Is the vibration forward and backward, or side-to-side? What happens in a hard left turn or hard right turn? What made the vibration get worse?
#5
I just had the same thing where I had vibration under load in the 35-45mph range, but if I let off the gas it went away. Plus a little clunk when putting in forward gear. Turned out to be the rear driveshaft universal joint at the rear differential was toast. Changed both ends of the shaft (short wheel base no carrier bearing) greased the splines under the bootie and no more noise or clunk.
BTW, there was no noticeable slop in the shaft from underneath by hand in neutral which threw me off a little at the beginning and started me thinking too complicated.
BTW, there was no noticeable slop in the shaft from underneath by hand in neutral which threw me off a little at the beginning and started me thinking too complicated.
#6
Honestly I dont even know whe the vibration is coming from. I feel it everywhere. When I make a hard turn it feels like is going to fall apart. Last summer I replace the driveshaft ujoints and the joke that comes from the differential. As soon as I let the pedal go everything gets smooth. I work all day today, but ill check the joint on the driveshaft tomorrow, maybe is loose? I hope so. Ill let you guys know what I find out
#7
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#9
#13
Same issue
I just had the same thing where I had vibration under load in the 35-45mph range, but if I let off the gas it went away. Plus a little clunk when putting in forward gear. Turned out to be the rear driveshaft universal joint at the rear differential was toast. Changed both ends of the shaft (short wheel base no carrier bearing) greased the splines under the bootie and no more noise or clunk.
BTW, there was no noticeable slop in the shaft from underneath by hand in neutral which threw me off a little at the beginning and started me thinking too complicated.
BTW, there was no noticeable slop in the shaft from underneath by hand in neutral which threw me off a little at the beginning and started me thinking too complicated.
Thanks for posting, I'll try this first.
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blackkawi400
1973 - 1979 F-100 & Larger F-Series Trucks
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08-13-2010 09:32 AM