Finally, vibration free!!
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Posting Guru
Joined: Oct 2009
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From: Ohio
Finally, vibration free!!
After repairing and replacing parts that were either worn out or damaged by vibration, I finally isolated the source of the vibration and repaired it. I can now drive it at highway speeds without worries of something vibrating off or otherwise tearing up the truck any further.
The vibration was caused by a rear drive shaft that didn't look bent, but was. We were able to save the front of the shaft, and replace the tube and rear coupler. Cost wasn't as bad as I thought it would be, $150 and a weekend without the use of the truck.
The last mechanical thing that I can find that needs done is the valve cover gaskets, which should be a simple job, and replace an exhaust manifold gasket.
Hopefully the wife doesn't tear it up like she's known to do with my older vehicles. She thinks all vehicles are designed to run high RPM and speed at all times. Oh, the cost of marrying a SoCal girl. LOL
The vibration was caused by a rear drive shaft that didn't look bent, but was. We were able to save the front of the shaft, and replace the tube and rear coupler. Cost wasn't as bad as I thought it would be, $150 and a weekend without the use of the truck.
The last mechanical thing that I can find that needs done is the valve cover gaskets, which should be a simple job, and replace an exhaust manifold gasket.
Hopefully the wife doesn't tear it up like she's known to do with my older vehicles. She thinks all vehicles are designed to run high RPM and speed at all times. Oh, the cost of marrying a SoCal girl. LOL
Tuned
Joined: Sep 2014
Posts: 358
Likes: 7
From: Ky
Very interesting and thanks for posting!
What were the symptoms the truck exhibited while vibrating?
What process-of-elimination strategy, in what order, did you employ to arrive at the driveshaft?
Do you have two rear driveshafts on that truck and if so which one was it.
Was the driveshaft taken to a shop individually for diagnosis?
If you could share some extra input it may help greatly, as vibration issues on these trucks is a common complaint.
What were the symptoms the truck exhibited while vibrating?
What process-of-elimination strategy, in what order, did you employ to arrive at the driveshaft?
Do you have two rear driveshafts on that truck and if so which one was it.
Was the driveshaft taken to a shop individually for diagnosis?
If you could share some extra input it may help greatly, as vibration issues on these trucks is a common complaint.
Thread Starter
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Posting Guru
Joined: Oct 2009
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From: Ohio
Symptoms were a very wicked vibration at highway speeds, felt all over, but mostly in the rear. After replacing the transmission, which broke at the bellhousing from the vibration and backed the starter bolts out, dropping the starter, I knew that it could only be one thing. LOL The transmission shop was supposed to check the shaft, and they claim they couldn't find anything wrong with it.
I pulled the shaft and found a dent in the tube, which told me it was out of balance. The transmission shop fed me a line of crap...or they only gave it a once over with bad eyes.
It's a 2 part drive shaft, and we were able to salvage the splined part, weld it onto the new tube, and pack it with grease. There should be little to no slop at the splined union. Sometimes packing it with grease helps for awhile, but they normally need replaced when they get sloppy feeling. That may be part of the vibration for most...but mine was actually good.
The truck's prior life was spent hauling equipment for a construction company, up and down the Wasatch Mountains in Utah. It wasn't well cared for, but rarely used at high speed...from what I've been told.
I pulled the shaft and found a dent in the tube, which told me it was out of balance. The transmission shop fed me a line of crap...or they only gave it a once over with bad eyes.
It's a 2 part drive shaft, and we were able to salvage the splined part, weld it onto the new tube, and pack it with grease. There should be little to no slop at the splined union. Sometimes packing it with grease helps for awhile, but they normally need replaced when they get sloppy feeling. That may be part of the vibration for most...but mine was actually good.
The truck's prior life was spent hauling equipment for a construction company, up and down the Wasatch Mountains in Utah. It wasn't well cared for, but rarely used at high speed...from what I've been told.
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