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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

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Old Jun 16, 2009 | 09:39 AM
  #1  
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From: glen burnie,Md
Question vibrations

Newbie here with a ?.
I have a 1980 150 4x4 four speed.
I am getting a really bad vibration from 35 to 50 mph faster than that it's get's a little bit better but still shakes alot. To me it seems to becoming from the some place in the rear.

Any input would be appreciated
thanks
 
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Old Jun 16, 2009 | 10:30 AM
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From: kenosha
I'd start with checking tires, maybe out of balance?
 
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Old Jun 16, 2009 | 10:39 AM
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From: glen burnie,Md
I forgot to say that I have already pulled all the tires and had them balanced.
 
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Old Jun 16, 2009 | 10:50 AM
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Rear U-Joint, Pinion Yoke or Bearing.

-Enjoy
fh : )_~
 
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Old Jun 16, 2009 | 11:27 AM
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Talking shakes

U-joints or mid bearing on drive line
 
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Old Jun 16, 2009 | 12:32 PM
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From: glen burnie,Md
Thanks for all the input. ? Should i just change the U's on the rear or do the ones on the front D-shaft as well.
 
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Old Jun 16, 2009 | 09:39 PM
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From: patricia ab canada
unless you are in 4wd all the time the front shaft does not turn in 2wd.i would chech them any ways,being the truck is almost 30 years old.
 
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Old Jun 18, 2009 | 10:53 PM
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check the shocks also. when mine were bad the truck would shake at 60-65 mph only
 
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Old Jun 24, 2009 | 02:27 PM
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From: glen burnie,Md
So I replaced the u-joints which were shot and the shaking shifter is still there ?
Anymore idea's
Thanks
 
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Old Jun 24, 2009 | 05:47 PM
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Truck might just be at it's time of the month XD

how about the shocks? did you give replacing them a try yet?
 
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Old Jun 25, 2009 | 01:08 PM
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From: glen burnie,Md
I wish that it was her time of the month then I could just give her some chocolate and she would be fine.
No I haven't changed the rear shocks yet .
U think that would make my shifter shake?
 
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Old Jun 25, 2009 | 01:29 PM
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The manual shift lever in my '85 F250, 4x4, T-19 always shakes/vibrates unless my hand is resting on it. It has always been there, even when i rotate/balance tires every few months or change the u-joints. It dosent move around too much, but it always vibrates a bit unless I am on the throttle. I would think its just naturally gonna virbrate from the motion of of the gears inside the tranny.
 
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Old Jun 25, 2009 | 01:40 PM
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From: glen burnie,Md
This it not a normal shake it move's around a lot .
I guess I'll try replacing the rear shocks.
Even though I don't think that they r bad
Any other idea's ??
 
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Old Jun 25, 2009 | 02:00 PM
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If the stick moves that much you ought to check the rubber transmission mount on top of the crossmember.

At least that was my problem.
 
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Old Jul 1, 2009 | 02:39 PM
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From: glen burnie,Md
So Tranny mount changed and still no change. ? could the rear drive shaft be out of balance.
 
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