Random Shaking
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Random Shaking
My 1979 F100 is shaking violently when braking. It is random. Might brake 9 or 10 times with no problem, then it happens and it is violent. Brakes have been inspected with no known issues. Help!!
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Fleet Mechanic
Joined: Jul 2017
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From: KY
Yes it could , I have seen idler arms shake randomly when worn out and braking could cause it ,,if rotors are not warped , then there has to be a problem in front end somewhere else ,,of course the king pins might cause some issue but unsure if it would cause the shaking ,,look at the front strut bushings as well
FTE Legend
Joined: Nov 2015
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From: Angier, NC
I would start with the steering like was said but how old are the shocks?
When braking a load is shifted to the front and the wheels could be bouncing.
I have seen this more with straight axles with leaf springs and hitting a bump at speed.
The wheel starts bouncing as the shock can not keep it under control till you slow down to almost a stop so the wheel stops bouncing.
Dave ----
When braking a load is shifted to the front and the wheels could be bouncing.
I have seen this more with straight axles with leaf springs and hitting a bump at speed.
The wheel starts bouncing as the shock can not keep it under control till you slow down to almost a stop so the wheel stops bouncing.
Dave ----
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Joined: Feb 2007
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From: upstate ny
Fleet Mechanic
Joined: Jul 2017
Posts: 1,276
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From: KY
True , there are I-beam bushings an struts bushings , start there as these trucks are old and those bushings dont get replaced very often
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Fleet Mechanic
Joined: Jul 2017
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From: East Texas
Check to see if the caliper pins/slides are sticking. Lube them while your in there anyway. Also check the rotors. If disc brakes of course.
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Random Shaking II
Ok, so now it is happening moe oftenand I am beginning to hear a heavy clanking even when not braking. Brakes have been inspected by local shop. Front end parts have been inspected. Several people who drove truck including me feel like it is coming from the back of the truck. Help!
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