Brutal vibration under highway acceleration - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 03-16-2011
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Brutal vibration under highway acceleration

In the city its not too bad... but ont he highway doing betweem 80 and 100 km/hr and over that ever, when i give the truck gas the whole front end seems to vibrate liek hell, and i can feel it madly in the steering wheel.

not sure if this is suspension or drivetrain related... but seeing as how its only on the highway when i accelerate i was say its almost trans related?

just started doing it recently, i know its not the vibration of my tires ive had mud tires almost the entire life of the truck so i know the feel lol
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Old 03-16-2011
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Might be a stupid question but do you have any mud or snow or anything caked in the wheels? I had a bunch of frozen in my wheels and it was an ungodly vibration.
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Old 03-16-2011
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Another obvious one, but did you check and make sure everything is tight? driveshaft?
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Old 03-16-2011
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Probably a u joint, check the d shaft. higher rpm and driveshaft slop/corrosion will cause that vibration. Get under the truck with the p brake on and vehicle in neutral, check and see if you can slap the u joints from side to side with a good dead blow hit from each cup, checking for small amounts of side play. then check the torsioned slop by physically twisting the shaft back and forth by hand. You may likely only see the first issue and it may be hard to detect because its probably just a single cup that got corrosion in it. If you still can't determine slop pull off the rear axle flange first (usually the most corrosion exposed joint on the truck
) check for a rough spot or where it doesn't pivot freely

Last edited by 08rangerdan; 03-16-2011 at 07:02 AM.
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Old 03-16-2011
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Also since its in the front, check the rotors.
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Old 03-16-2011
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I had the same thing happen at highway speeds and it turned out that my hub assemblies were bad; I also got it when my tie rods went bad - though that was more constant. Jack the truck up to see if there's any play in your tire. If there's movement from side to side, there's an issue with the hub assembly, if there's movement from top to bottom, there's an issue with your ball joints.
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Old 03-16-2011
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Side to side is also tie rods. Is your trans slipping?
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Old 03-16-2011
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Oh yeah... that too, thanks Jacob.
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Old 03-16-2011
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mines in the dealer for the same thing. front right hub and tie rods. check your fan for play in it also
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Old 03-16-2011
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is it like this?


those were my outer tie rods that were shot. after i got it aligned the truck was were it was supposed to be and since there was a ton of play in the rods it went where it wanted haha
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Old 03-16-2011
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Its not quite that bad... thats looks even worse than mine but more or less the same vibration
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Old 03-16-2011
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Have you checked to see if you lost some wheel weights.... If it's progressive it could be that.
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Old 03-17-2011
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you just installed the new under drive pulley set right? i dont think the new crank pulley has a balancer on it does it? if not that could be part of the problem... although that would be more rpm related. however at a constant speed then putting a load on the engine could cause a vibration through an unbalanced crank
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Old 03-17-2011
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I had the same thing today at the higher highway speeds, I had just replaced the hub rotor assembly for my 2wd and had put in new bearings. It vibrated at the 80-100 mark. Came home, retorqued the bearing nut to specs AGAIN and it seems to have went away.
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