Diagnosing my own vibration, would this work?
#1
Diagnosing my own vibration, would this work?
So with no CDL, I'm wondering would this help me seperate front to rear, AND possibly left to right.
If I jack up one tire,chock the **** out of the wheels and basically make it so the truck can't move or fall off the jack, accelerate that one wheel and see if vibration is there. Also, parking brake does it lock up the front driveshaft too or just the rear with t case open.
EDIT WTF AM I THINKING MY TRACTION CONTROL WOULD ACTIVATE!!
If I jack up one tire,chock the **** out of the wheels and basically make it so the truck can't move or fall off the jack, accelerate that one wheel and see if vibration is there. Also, parking brake does it lock up the front driveshaft too or just the rear with t case open.
EDIT WTF AM I THINKING MY TRACTION CONTROL WOULD ACTIVATE!!
Last edited by Spencerfitch; 09-21-2012 at 11:34 PM.
#3
aside from insanely dangerous, by lifting a wheel off the ground you are changing the load. When you change the load you will alter any vibration. Soo even if this would work Which I doubt it would, the results would be null and void. What is your vibration. Maybe someone on here has had the same or similar enough to be able to help you. kinda hard to without knowing what the vibration is.
#4
aside from insanely dangerous, by lifting a wheel off the ground you are changing the load. When you change the load you will alter any vibration. Soo even if this would work Which I doubt it would, the results would be null and void. What is your vibration. Maybe someone on here has had the same or similar enough to be able to help you. kinda hard to without knowing what the vibration is.
#6
Ask the shop if they will put it back on the lift, remove the wheels and then run it back upto 70 and see if he vibration is still there.
To rule out the driveshaft...I have heard but have yet to confirm that a Dodge Durango front driveshaft fits the DII as well, maybe you can pick one up from a junk yard for cheap enough to try?
I'm just spit balling here so realize that.
My money is still on the output shaft bearing on the t-case.
To rule out the driveshaft...I have heard but have yet to confirm that a Dodge Durango front driveshaft fits the DII as well, maybe you can pick one up from a junk yard for cheap enough to try?
I'm just spit balling here so realize that.
My money is still on the output shaft bearing on the t-case.
#8
#10
Sweet Baby Jesus, that sounds like a Darwin award waiting to happen.
You might not like Disco Mike's answer, but he is right. You need to go about your diagnostic logically and carefully.
Start at the Engine and work your way "out". You say it's at speed, so it has to be the tranny or back. If it vibrates at 25-40 mph have you tried a lower/higher gear to see if it goes away? 25mph you can drive in low range, did you try driving it up to 25-30mph with low range engaged? Did the vibration go away?
You have a new front propshaft, which if I remember correctly from you previous posts is professionally rebuilt. It's probably safe to say it's ok. What about the rear propshaft though? Have you greased it recently? What about the rotoflex joint? Does it look jacked up? They are made of rubber, they dry out and cause all sorts of weird vibrations.
Assuming propshafts check out, the last on the list is to look at the axles. For that though I would recommend working from the tire in. Are the tires new? Not bald? Recently rotated and balanced? Lugnuts look ok? How do the rotors and brakes look? Do you have play in the wheel bearings? With the tire off the ground try to shake it back and forth hard as you can, any play = bad bearings = bad vibrations.
Throwing random parts out there and guessing what the problem is gets costly fast.
You might not like Disco Mike's answer, but he is right. You need to go about your diagnostic logically and carefully.
Start at the Engine and work your way "out". You say it's at speed, so it has to be the tranny or back. If it vibrates at 25-40 mph have you tried a lower/higher gear to see if it goes away? 25mph you can drive in low range, did you try driving it up to 25-30mph with low range engaged? Did the vibration go away?
You have a new front propshaft, which if I remember correctly from you previous posts is professionally rebuilt. It's probably safe to say it's ok. What about the rear propshaft though? Have you greased it recently? What about the rotoflex joint? Does it look jacked up? They are made of rubber, they dry out and cause all sorts of weird vibrations.
Assuming propshafts check out, the last on the list is to look at the axles. For that though I would recommend working from the tire in. Are the tires new? Not bald? Recently rotated and balanced? Lugnuts look ok? How do the rotors and brakes look? Do you have play in the wheel bearings? With the tire off the ground try to shake it back and forth hard as you can, any play = bad bearings = bad vibrations.
Throwing random parts out there and guessing what the problem is gets costly fast.