On acceleration, a short vibration
Senior User
Joined: Apr 2005
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Also, I set up a service appointment at my Ford dealer for this problem. It's a week away, but if no one else gets a fix by then, hopefully I'll be able to get an answer about it from Ford. The problem described by everyone sounds like the same problem.
Thanks!
Thanks!
Hotshot
Joined: Aug 2002
Posts: 12,679
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From: BC, Canada
I would start by pulling the rear driveshaft out and checking the u-joints to see if they move smoothly. You can't always tell with the driveshaft installed.
Limited slip problems usually only show up when going around a corner.
Like was also mentioned I would lube the inside of the splines in the slip yoke at the front of the shaft. Ford makes Teflon grease for this but any good grease will work enough to prove whether that's the problem or not.
Limited slip problems usually only show up when going around a corner.
Like was also mentioned I would lube the inside of the splines in the slip yoke at the front of the shaft. Ford makes Teflon grease for this but any good grease will work enough to prove whether that's the problem or not.
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Well, this problem is fixed for me. It was indeed the clutches in the axle. The dealer replaced them today. The odd thing was that the shudder would even occur with the vehicle going straight ahead. The van only has 19,500 miles, so I guess that there was a mechanical breakdown of some sort. Hope this helps others with the same problem.
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Joined: Sep 2004
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How did it work Chuky66?
I'm getting exactly the same thing, and I'm getting an odd clicking/pinging sound at the same time. Thought it was the engine first (I've been through the COP/Plugs routine, with therapy I got better), but can't reproduce unless vehicle is moving. U-joints are all good. Place vehicle in gear, but hold brake and rev = no clicking or vibration. Start to drive, feels like I've got a plug missing, but no check engine light.
Clicking is more pronounced during turns from stop. Vibration never completely goes away.
I have locking rear diff and 4x4.
Let me know how it goes.
Clicking is more pronounced during turns from stop. Vibration never completely goes away.
I have locking rear diff and 4x4.
Let me know how it goes.
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Joined: Mar 2004
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From: hallville
Most peaple that have that same problem over look putting some friction modifier in there diff.They need some added every once and a while.It cures all kinds of rear end vibrations and noises.It's also cheap.At least try it before spending more time and money.Unless you don't have a posi diff.I do work for my local municipality and have seen just this month four of our ford trucks with 8.8 diff with faulty rear diff bearings and factors settings that caused the diff's to go bad in under 50,000km's.Hope that's not your problem.If it is do yourself a permenant fix and buy the carrier assembly for 350.00 dollars.Because the factory one is junk and rebuilding it might not cure it for long.Just what I've seen here.
Last edited by Racerguy; Oct 6, 2005 at 02:27 PM.
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I have this same symptom on my 2000 5.4 f150.. This vibration is auditable and not a vibration that is felt. at this time it is at a tranny shop and the tech thinks this is caused by a convertor coming apart.
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Thanks Racerguy.. The vibration noise will manifest just after take off while going straight. vibration noise seems to be related to drive line load. Noise can be duplicated at a slow constant speed by manipulating the gas pedal. If load is very light. vibration noise is heard. but if I accelerate slightly noise will go away. and if I decelerate, the noise will go away. additonally the overdrive light is flashing a code and the tranmission tech has found debris in the oil pan. which he thinks are damaged convertor parts.
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Originally Posted by TEKWS01
Thanks Racerguy.. The vibration noise will manifest just after take off while going straight. vibration noise seems to be related to drive line load. Noise can be duplicated at a slow constant speed by manipulating the gas pedal. If load is very light. vibration noise is heard. but if I accelerate slightly noise will go away. and if I decelerate, the noise will go away. additonally the overdrive light is flashing a code and the tranmission tech has found debris in the oil pan. which he thinks are damaged convertor parts.
Sorry
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tom
My 99 has the same symptoms. I've tried every remedy. called mechanics, had it checked out by mechanics, checked things myself, replaced u-joints,greased yoke, unhooked emergency brake cable, serviced tranny, added inti-shudder additive, balancing tires. Spent hours reading posts. etc,etc,etc. I learned to ignore it after a couple hundred dollars and countless hrs. I hope you can find something. Let us know.
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Originally Posted by shivelyt
My 99 has the same symptoms. I've tried every remedy. called mechanics, had it checked out by mechanics, checked things myself, replaced u-joints,greased yoke, unhooked emergency brake cable, serviced tranny, added inti-shudder additive, balancing tires. Spent hours reading posts. etc,etc,etc. I learned to ignore it after a couple hundred dollars and countless hrs. I hope you can find something. Let us know.
