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-   -   '04 1500 QC Vibration (http://www.ramforumz.com/showthread.php?t=41277)

SA1911A 08-29-2009 01:31 AM

'04 1500 QC Vibration
 
:4-dontknow:I put a Ground Force 1.5"/4.3" lowering kit on it this week now have a vibration in back end (you can see bed shake in mirror at low speed) starts about 20 and is gone after 50 miles an hour any ideas on why? Open to all input. Did think tire balance so had tires rebalanced no help, rotated tires thinking maybe a rim that was strike two.

kgmunro 08-29-2009 10:23 AM

how about a ujoint or driveshaft angle problem? these trucks are bad for universal joint failure. I work at a Dodge dealership and keep a ton of them on hand.

SA1911A 08-29-2009 11:46 AM

Thanks for the input I’ll check both of those today, is there a degree angle for drive shaft or is it just an eyeball alignment when sitting on ground.

SA1911A 08-31-2009 08:27 PM

Used shims on axle and plate on trans tail shaft that came with kit for proper pinion/driveshaft alignment, ( I thought) after playing around with it this weekend I found the trans needed to be raised just about 1/32 of an inch added a homemade shim to raise tail shaft. Like magic vibration all gone. I am going to play with it some more to see if I can get same result by changing shims around/out and spacer plate at trans.
FYI everything I found told me angle of pinion is between 3 and 6 degrees

SA1911A 09-01-2009 07:45 PM

Quote:

Originally Posted by SA1911A (Post 77610)
Used shims on axle and plate on trans tail shaft that came with kit for proper pinion/driveshaft alignment, ( I thought) after playing around with it this weekend I found the trans needed to be raised just about 1/32 of an inch added a homemade shim to raise tail shaft. Like magic vibration all gone. I am going to play with it some more to see if I can get same result by changing shims around/out and spacer plate at trans.
FYI everything I found told me angle of pinion is between 3 and 6 degrees

I was corrected today on pinion angle it is 1 to 3 degrees for a lowered truck so they say seeing as mine has stopped vibrating I'm going to get a tool to read the angle for myself. Just didn’t want to mislead anyone.


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