I have a 2003 allroad 2.7T with 105,000 miles (yes I drive alot). I just returned from a 2500 mile round trip while towing a trailer with two harleys (combined weight of trailer and bikes about 2400 lbs). On the return trip I started getting vibration on acceleration (not while coasting). The vibration was significant at about 60 mph but not bad above or below that range. I thought it was something out of balance on the trailer rig (wishfull thinking). When I unhitched at the end of the trip, the vibrtation is still there. Sometimes it seems to go away, and other times I can't see straight. The vibration still only occurs on acceleration. Any ideas??

Thanks!

-Chris

sometimes its unbalanced wheels. or wheels have a bump(s). start with small then move to big.

the vibration is where? front, rear, left, right?

Thanks for the response...I don't think it's a ballance or flatspot issue, as the vibration only happens while I am accelerating. When I coast at exactly the same speed, tthere is no vibration at all. As soon as I apply gas again the vibration kicks in. I feel the vibration mostly in the seat of my pant, but some is in the steering wheel. Seat of the pants vibration usually means the issue is in the rear wheels and steering wheel vibration is usually the front wheels. I can't seem to isolate it to the left or right side.
ORIGINAL: kakarot

sometimes its unbalanced wheels. or wheels have a bump(s). start with small then move to big.

the vibration is where? front, rear, left, right?

maybe you bended something like CV while towing. I don't think its anything in tranny.

It sounds like an engine missing...could be many things, ignition, bad plugs, egr... is there any CEL? If you know someone with a VAG-Com, scan for fault codes...not all trigger the CEL.

Check the driveshaft going to the rear differential, you might have a bad universal joint or center bearing support..

Hi,

I have the exact same problem with my 2002 A4 1.8T CVT. Have you figured out what your problem was?

thanks

The issue could be wheels, CV joint or axels. The ar is very sensitive to unbalanced wheels/tires. I struggled with a "shaky" ar for months. Even had the wheels Hunter Road Force Balanced, to no avail. Finally, I moved right front tire to rear.

Ive got the same problem if not maybe alittle different. Mine however didnt start until i chipped my car and it only happens when im at full boost or around it. It sounds like it is coming from the rear of the car, could it be a exhaust issue? (since im still running the unimpressive stock size, or not?) I know for a fact it isnt tires due to the fact it happened with the old ones and the new ones i just installed. I scanned my car also and no codes showed up so i feel like it has to be some type of issue with the turbo when its pushing full boost (idk....)

I have been experiecing the same exact problem on my 2003 Audi A4 1.8T.. when i accelerate my car vibrates/shakes like no other... i just had my tires balanced and the problem still exists...it seems likemy car is misfiring as it did when my coil failed...im not sure what to do. any advice anyone?

check in the a4 section is my advice. if it is a engine problem, they would know solution.

It's probably your front inner CV joints. I've seen 3 cars with them creating plenty of vibration during accelleration and decelleration. The easiest way to check them would be to lay down and grab ahold of your axle and try to wiggle it while your car is on the ground. If there is any movement one of the axle joints is definately in need of replacing. Hope that helps.

Any updates on this problem? I have a 2003 A4 Cabrio front trackCVT with the 1.8T engine having the same vibrations under acceleration at any given rpm.

Thanks.

I believe I have the same problem. It seems like the vibration is coming from the mid-rear of the car. I'm pretty sure it is from either the center bearing, universal joint, or the driveshaft end bearings. This site may be of interest to you:

http://www.blauparts.com/proddetail.asp?prod=F5C1103-A

I just purchased a 1999 A4 with 190000 miles on it. I googled a4 vibration which led me to this forum. I absolutely love the car! I also have a 1992 100 Quattro.

mrhodges2

My allroad is in the shop as we speak for the same issue. 2001, 70,000 miles. Has just recently gotten worse. Vibrates now @ 60 to about 70 like the car has come apart. In town, at low speeds, no issue. Above the those speeds, a bit of a 2 second vib but not bad. Thought it was the tranny, but to no avail... Hope its a tire balance issue. But from the passenger compartment, it sounds and feels likes garbage. My ford diesel truck has a smoother ride than that!

Ok.... I don't know what happened but this is the second time this thread has restarted on this forum. I posted this last time but that was awhile ago. It is almost always (90%) the front inner CV joints. It almost always starts at about 90k -110k and it only happens at certain speeds and gets worse during acceleration.

If you are somewhat mechanically inclined this is a relatively simple procedure. Go online and buy some NEW not rebuilt but NEW front Axles. They should run you about $150 - $200 each. (Raxles are definately the best and they come with gloves and a new bolt for $200) The axles just slide in and out of the front diff. easily and it will take you about two hours to do both. Keep in mind that one side is slightly shorter than the other.

If you go to a shop it will cost about $400 - $500 a side and you need to get both done.