Bad Vibration
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Joined: May 2004
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Bad Vibration
Guys I need some help. I have a 01 Powerstroke Crew Cab 4x4. When I'm driving, especially pulling a load, when I hit about 55mph and the trans shifts back down to 1400-1500 rpm there is a severe shake in the steering wheel. It's almost like a V-8 runnign on 7 cylinders. My acceleration during this vibration is very poor. When I'm running about 70mph and the rpms are at about 2000-2100 you hardly notice it. I have changed the fuel filter and it didn't change a thing. I have noticed there is a little play in the rear driveshaft to differential u-joint as well as a considerable amount of backlash on the rear yolk. Do you think this is what causes the vibration and if so does it make sense that it is more noticeable at certain rpm levels. It seems as though the tranny is shifting down to low from a power standpoint but yet the rpms seems about right. What do you guys think???
Senior User
Joined: Jul 2005
Posts: 261
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From: North Carolina
01 PSD, could the shake be from front end problems? I had a severe shake at about 55 when my front tires were going bad. Didn't always do it. New tires all around and front end alignment, no problems since. I don't remember an acceleration problem because I was more worried about the shake.
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I've been wondering, do you guys think it could be a bad torque converter? The reason that I ask is that the vibration seems to be worst while under load. If it were u-joints or driveshaft wouldn't it be obvious at all levels?
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Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
Could be both if you have a lot of slop in the driveline.
Also when it's doggin' it does it sound like the engine is missing?
Also when it's doggin' it does it sound like the engine is missing?
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From: Baltimore
Originally Posted by 01 PSD
I have noticed there is a little play in the rear driveshaft to differential u-joint as well as a considerable amount of backlash on the rear yolk. Do you think this is what causes the vibration and if so does it make sense that it is more noticeable at certain rpm levels.
