Violent Shake....Please Help!
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Violent Shake....Please Help!
I hope someone can help me. I purchased a used '99 F250, crew cab, two wheel drive. 7.3 litre with 6 speed and 125K miles. When I bought the thing it ran and drove great. I have since put about 5K on the truck, including hauling a Bobcat and now the front end shakes so bad my fillings came loose.
It starts at about 45mph with the steering wheel wobbeling back and forth. If I drive it just so, I can accellerate through it and reach cruising speed with a slight vibration. But if I don't catch it, the wobble will go to a violent shake, then I have to slow down, clean my shorts and then accellerate again.
It will also start shaking out of the blue if I hit a qick series of bumps, or turn on way then counter steer to the other.
Please Help!!! Thanks in advance!!
Randy
It starts at about 45mph with the steering wheel wobbeling back and forth. If I drive it just so, I can accellerate through it and reach cruising speed with a slight vibration. But if I don't catch it, the wobble will go to a violent shake, then I have to slow down, clean my shorts and then accellerate again.
It will also start shaking out of the blue if I hit a qick series of bumps, or turn on way then counter steer to the other.
Please Help!!! Thanks in advance!!
Randy
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Joined: Feb 2003
Posts: 2,153
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From: Roseburg OR.
Violent Shake....Please Help!
Your tires are out of balance. This is common with large tires but not so much with smaller ones. It is a harmonic thing that if you remain in a certain speed range it's just right to build up a wild shake. You need to go have the tires spin balanced. That will cure it. You might have lost a weight to cause this to start. In the short term you can put the rear's on the front until you get them balanced.
Fleet Mechanic
Joined: Aug 2003
Posts: 1,780
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From: Phoenix, AZ
Violent Shake....Please Help!
I had the same thing happen to me last week but I had only 24K miles on my tires.
It felt like the front tires were out of balance when in fact it was a rear tire that had separated.
I pulled over and did a visual on the tires and they all looked fine. (If I had rotated the tire a bit more, I would have seen a bulge on top of the tire.)
Anyway, I purchased new Michelins.
It felt like the front tires were out of balance when in fact it was a rear tire that had separated.
I pulled over and did a visual on the tires and they all looked fine. (If I had rotated the tire a bit more, I would have seen a bulge on top of the tire.)
Anyway, I purchased new Michelins.
Senior User
Joined: Apr 2003
Posts: 305
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From: Cleveland Area
Violent Shake....Please Help!
Do a visual inspection of the suspension including the bolts that mount it to the truck. I broke a bolt that mounts the suspension to the truck and it did the wobble but only after I hit a bump to get it going.
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Joined: Mar 2002
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From: Twin Cities, MN
Violent Shake....Please Help!
Biwanylo,
diddo.
We've had to replace balljoints many times before the minibuses even hit 10,000 miles. Our newest one acully had plugs in them that we removed and put zerks in, right now thats the only one we didn't have to replace the balljoints in. And when they go the tires seem to buldge on the outside.
diddo.
We've had to replace balljoints many times before the minibuses even hit 10,000 miles. Our newest one acully had plugs in them that we removed and put zerks in, right now thats the only one we didn't have to replace the balljoints in. And when they go the tires seem to buldge on the outside.
Junior User
Joined: Aug 2003
Posts: 96
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From: South Carolina
Violent Shake....Please Help!
Originally posted by The Grinch
Do a visual inspection of the suspension including the bolts that mount it to the truck. I broke a bolt that mounts the suspension to the truck and it did the wobble but only after I hit a bump to get it going.
Do a visual inspection of the suspension including the bolts that mount it to the truck. I broke a bolt that mounts the suspension to the truck and it did the wobble but only after I hit a bump to get it going.
Thanks
Snape
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Senior User
Joined: Apr 2003
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From: Cleveland Area
Violent Shake....Please Help!
The wobble (a violent one) only stopped after I slowed to a crawl. The truck was oscillating on the tie rods which were the only thing holding the front susp. on!
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Joined: Sep 2002
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Violent Shake....Please Help!
I had the same problem as Grinch. The bolt holding the right swing arm was broken. It would ride fine until a bump, and then would shake so violently that I would have to come to a complete stop.
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