A quick inspection turned out a bad drive shaft. Aside from motor mounts, if you have a 4x4 there are universal joints on the drive shaft to the rear wheels that might be causing vibration on acceleration if they're worn. Replace the front axles and possibly transmission mounts and you should solve the problem. It feels like it’s near the center bearing but it’s hard to pinpoint a vibration. So be sure that the flex-discs were installed centered and that where the center bearing mounts to the body is correct and not pulling the shaft left or right as there is some adjustment allowed in the install of the center bearing bolts. Guy tells me he straightened the drive shaft very slightly. Below are common symptoms of a bad drive-shaft. An excessively vibrating driveshaft will not only cause vibrations that can be felt by the passengers, but it can also cause accelerated wear on other drivetrain components. My X3 was suffering from a really bad vibration in the cab. I would say that if it dissapears with the fuse in, it more likely points to an issue with the transfer clutch/duty solenoid. When accelerating and decelerating, however, there's enough load on the driveshaft and joints to cause vibrations that will increase and decrease with vehicle speed. I'll probably just do I anyways seeing that the car has 175,000 miles on it and that stuff wears out. When I bought my T2 I had drive-line vibration in all conditions. This truck has a two piece drive shaft. Etc, etc. H6 OBW VDC, H6 OB Sedan, Tribeca, Lifted XT6. The U-joint felt and appeard to be good when the drive shaft was out so I don’t think it’s the drive shaft. If the issue issue is present and unchanged by acceleration vs coasting, it is probably wheel balancing. There are no "clunks" at all while shifting gears or driving, just the vibration. I've searched everywhere and can’t seem to find someone with the same situation… close, but not the same. did your vibration get progressively worse? i nervous about spending all the money on axles then it turn out to be trans. After 2 months my new 2007 Ridgeline developed a significant front end vibration that only occurs during acceleration. I don't think the mechanic made it out of the parking lot when he turned around and told me the center differential was my problem. it would take more oil then usual on an oild change. The other side needs it because there is still a small vibration but now I know. I removed both drive shafts and put the transfer case in 4h and ran it in all gears up to 75mph on the speedo and no vibration. You could also try running the vehicle on jack stands or a lift and see if that helps locate the problem. Try the fuse trick and let us know what the answers to those questions are. Car: 2008 Tribeca, 2010 LGT, Sold: 2005 XT Limited. The only "driveshaft" you have are axels. The center bearing and 2 flex disks are new. Sign 3: Excessive grease around the spindle of the u-joint is a sign that there is a … Wheels have been rebalanced recently. I have a 2005 outback 4 cyl. Weak engine mounts. Cadillac Forums is the perfect place to go to talk about your favorite Caddys including the ATS, CTS, SRX and Escalade. I removed the rear drive shaft and ran it with just the front drive shaft and it has the same vibration. I had fixed my vibration during acceleration only by replacing the driver's side driveshaft. Something is causing the driveline to get out of alignment on acceleration. The most basic causes of vibration in a driveshaft come from the shaft being bent or out of balance. Sounds like a driveline alignment issue. I don't, nor have I ever heard a clunk noise. Any sort of vibration indicates an issue. Abnormal noises are another symptom of … Diagnosing noises or vibrations at a distance is more challenging because there's no way to experience the symptom. The problem with the bad diff bushing, is that only in the v's or is it a problem on the 3.6l? Removed the front drive shaft and ran it with just the rear drive shaft and the same vibration. Bad diff bushings. It took me along time to find this. Fleetwood, 60 Special, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Any fluid changes performed or still on the origional fluid? The next most common source of vibration is improper powertrain angle, driveshaft angle and axle pinion angle. It may have been the bearing in the center however I just purchased a used drive shaft assembly for $75 at a junk yard and had it installed for $250. Bad Drive Shaft. Accordingly, if drive … You can only see it once the inner CV joint is removed from the vehicle and cleaned of all grease and debris. Replaced torque convertor for $1200. 11-19-2014 06:48 AM #11 texasboy21 I found that the output shaft of the transfer case to the front driveshaft is a bit sloppy. So I went to the parts counter and ordered one for $500, and then replaced it myself. thanks for all the help. Usually, a drive shaft does not fail instantaneously, and deterioration happens over time. Damaged inner CV joints cause vibrations on acceleration and are very difficult to diagnose because the damage is so inconspicuous. Anything that’s out-of-balance will cause only a first order vibration, … The driveshaft sag wont go away until you replace all the components responsible for causing it to sag in the first place. Among the most common are worn U-joints or slip splines, out-of-balance components, yokes out-of-phase or misaligned angles and yoke ears that are not concentric with the splines. Recently my car has begun vibrating under power at highway speeds. Whole car, not steering wheel. Heavy duty ujoints, flanges and tubing are used. While you can inspect the driveshaft for signs of damage, only a qualified driveshaft shop can check for true straightness and balance. The rumble sounds as if the drive shaft is flexing up and rubbing against bottom of car. From stop, slightly faster than average acceleration, vibration occurs around 15-20 mph then subsides until even fainter vibration around 75 mph . Thanks. A first order driveshaft vibration will cause one shake or disturbance for each revolution of the driveshaft. I don't think the mechanic made it out of the parking lot when he turned around and told me the center differential was my problem. I didn't figured out what is a problem. May be the source. Bad trans mounts. During hard acceleration, the pinion should come slightly due to torque. Please someone help! There is a slight vibe under very hard acceleration. The car vibrates during acceleration. 2011 Subaru Outback 90,000 mi, Visitor. Vibration is a driveshaft problem that can either transverse or torsional. A torsional vibration will cause the drive shaft, “downstream” of the front U-joint, to “speed up” and “slow down” twice per revolution. 2. It's not a really bad vibration but it seems to be getting worse. Welcome to the Subaru Outback Owners Forum, we have tons of information about your Subaru Outback, from a Subaru Outback Wiki to customer reviews. do you have any hint/inclination towards "it's up front" or "it's more under me/towards the back? Damaged Inner CV Joints Can Cause Vibration on Acceleration. Officially, Toyota says: “Some 2005 – 2014 model year Tacoma vehicles equipped with automatic transmission may exhibit a vibration felt in the seat, floorboard, and steering wheel between 15 – 25 mph caused by a second order drivetrain vibration under acceleration.” Get the drive shaft off, and the vehicle drives like new with only the rear drive shaft connected. and vice versa. From a stop or just driving down the road. This is the harmonic balancer Ford puts on the end of their shafts to control mild vibration problems. If that vibration goes away the instant you lay off the gas, this is your problem, and our Drive Shaft Replacement Kit (Item# 9300 ) … Meanwhile back in the shop, Ralph was putting together a completely new one piece shaft to replace this monstrosity. I'm not completely sure our engines have one but i beleive they do, and someone could have removed it. Inserting the 4wd fuse made no difference during the diagnosis of my vibration. For a better experience, please enable JavaScript in your browser before proceeding. You have to figure out which one is doing it. The vibration will be felt at the floor board and can be either a small vibration or a large one depending on the wear. Quattro would have a driveshaft that extends from the front to the rear, that there is a courier in the middle that has been known to cause some sounds under acceleration. Driveshaft angle changes under acceleration as the engine/ trans 'tilt' - the driveshaft angle change can cause the CV at the end of it to spin in an area where it has wear. If there is vibration under acceleration, the chances are that you have worn universal joints. By the way, wheel weights fall off and some wheel balancing jobs are better than others, so having them double checked isn't a bad idea. Other than that nothing else comes to mind. Driveshaft vibration can have many causes. it turns out to be the axles. When you have vibration on acceleration, torque applied, and it goes away when you coast, torque removed, it is generally a cv axle out of balance or the driveshaft. The rubber was already cracked. For a better experience, please enable JavaScript in your browser before proceeding. That bushing goes bad on all cars (and crossovers) with the Getrag rear diff. Uphill under acceleration will put maximum depression on the rear suspension, which will change the angles of the trunnions and exacerbate any wear-induced vibration. When the driveshaft operates at intersecting angles, the U-joints spin in oval circles, and that creates vibration because the driveshaft isn’t operating at a constant speed. This place seems legit, so I'm having trouble believing he messed it up. There is a drive shaft vibration on acceleration, 0-20 mph. You CAN NOT feel it in the steering wheel. I also had a similar problem in my 2000 OB. Sorry for the long post but I’d rather be as specific as possible. Ignoring these problems can cause an unnecessary breakdown. This driveline will tolerate some mis-alignment but not much. Other speeds no vibration. A so-called "Chevy Shake" class action lawsuit alleges GM vehicles suffer severe vibrations because the automaker uses aluminum driveshafts. Go to a shop here in Denver, get new MOOG u-joints pressed in, and the drive shaft balanced. Momentum is doing most of the work. I removed the balance shaft in my mazda 6 and it made a lot of vibration when you accelerate, you could feel it in the wheel as well as it vibrated the car. I took it to the dealer when I couldn't figure it out.
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