vibration @ 55-65mph
Fleet Mechanic
Joined: Jul 2003
Posts: 1,574
Likes: 21
I had an F 250 no one could find the source of a vibration, at 55 to 60 mph. As I was leaving a job I noticed a rear tire was low so I changed it out. Vibration problem was cured. Also I had stumbling going up hills on my F 150, after the I.A.C. was changed that went away.
Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
Vibrations etc can be pretty tough to figure out without actually driving the truck to see what it's doing. Even then sometimes they can be almost impossible to figure out.
Oh_That I think I'd remove the driveshaft and thoroughly check the U-joints for any roughness or looseness.
pappagator if there is any chance the problem could be engine related I'd start there. It sounds like your spark plugs are probably due to be replaced because of the mileage on them anyway. I've seen transmissions replaced or rebuilt because of engine running problems. This might be a good one to have your dealer look at. They can check for a misfire on the road with their WDS scan tool.
An IAC shouldn't change the way it runs up hills but i guess anything is possible.
Oh_That I think I'd remove the driveshaft and thoroughly check the U-joints for any roughness or looseness.
pappagator if there is any chance the problem could be engine related I'd start there. It sounds like your spark plugs are probably due to be replaced because of the mileage on them anyway. I've seen transmissions replaced or rebuilt because of engine running problems. This might be a good one to have your dealer look at. They can check for a misfire on the road with their WDS scan tool.
An IAC shouldn't change the way it runs up hills but i guess anything is possible.
Senior User
Joined: Oct 2001
Posts: 130
Likes: 0
From: Saratoga County, NY
Have the vibration in my 02 Supercrew (5.4 4X4) with 36,000 miles on it now. It's been on and off since the truck was in the low 20,000 mile range. It has been in and out of the dealer since then where they checked tire balance and had the driveshaft out a few times. Usually starts when at speed and increases till the steering wheel and mirrors (in and outside) start shaking bad. Sometimes it goes away after a few miles, other times I have to pull over and stop the truck. I changed the tires at 30,000 miles, but that had no effect. It's off warrenty now, so I'm just waiting for a new vehicle I have on order, then this truck will be someones elses problem.
Posting Guru
Joined: Jun 2006
Posts: 1,590
Likes: 1
Originally Posted by DonLefNY
Have the vibration in my 02 Supercrew (5.4 4X4) with 36,000 miles on it now. It's been on and off since the truck was in the low 20,000 mile range. It has been in and out of the dealer since then where they checked tire balance and had the driveshaft out a few times. Usually starts when at speed and increases till the steering wheel and mirrors (in and outside) start shaking bad. Sometimes it goes away after a few miles, other times I have to pull over and stop the truck. I changed the tires at 30,000 miles, but that had no effect. It's off warrenty now, so I'm just waiting for a new vehicle I have on order, then this truck will be someones elses problem.
Good Luck
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