Bad Vibration
New User
Joined: Nov 2005
Posts: 15
Likes: 0
Originally Posted by 01 PSD
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???
Thanks,
jbracken
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New User
Joined: May 2004
Posts: 16
Likes: 0
I have not found a resolution yet. I've been terribly busy and it has been getting put off. The idea of bearings in the front end seems to make sense. I'm going to check that as well as the possibility of a loose nut. I'll let you know what I find out.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
Originally Posted by 01 PSD
I have not found a resolution yet. I've been terribly busy and it has been getting put off. The idea of bearings in the front end seems to make sense. I'm going to check that as well as the possibility of a loose nut. I'll let you know what I find out.
Cross-Country
Joined: Apr 2001
Posts: 87
Likes: 2
01PSD,
Did you ever resolve this problem? I am having a similar problem, cleaned turbo and new o rings, then new crank sensor, then new front brakes ( the works with power slot and hawks), today new tires all around. So far about $2K and still the vibration. Mine starts out right away around 10 MPH and goes away around 60.
Truck is at the stealership now.
Anyone else have a similar problem?
Thanks
Did you ever resolve this problem? I am having a similar problem, cleaned turbo and new o rings, then new crank sensor, then new front brakes ( the works with power slot and hawks), today new tires all around. So far about $2K and still the vibration. Mine starts out right away around 10 MPH and goes away around 60.
Truck is at the stealership now.
Anyone else have a similar problem?
Thanks
Posting Guru
Joined: Oct 2003
Posts: 1,332
Likes: 4
From: Baltimore
I read somewhere that the nut that holds the flange on the transfer case can come loose causing a vibration also. I tried to check mine but needed a socket larger than what I had. I think it will take a 22mm socket. You might want to mark the driveshaft for orentation and remove it to inspect the u-joints. While you have it out check the flange nuts on both the transfer case and the pinion.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
Originally Posted by slc10844
I read somewhere that the nut that holds the flange on the transfer case can come loose causing a vibration also. I tried to check mine but needed a socket larger than what I had. I think it will take a 22mm socket. You might want to mark the driveshaft for orentation and remove it to inspect the u-joints. While you have it out check the flange nuts on both the transfer case and the pinion.
The socket is way bigger than that. I'm at home right now and I can't remember the exact size but it's somewhere around 1 1/2" .
The one going to the front driveshaft is a little smaller.
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