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Volkswagen Jetta, Golf, GTI: 1999-2005, R32: 2004 (A4) Humming /vibration at speeds over 60kph - please help


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Last Post: Mar 13, 2014 2:06 AM Last Post By: tomanyvw
tomanyvw

Posts: 2
Registered: 03/11/14
Humming /vibration at speeds over 60kph - please help
Posted: Mar 11, 2014 7:03 PM
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I have a humming noise and a vibration at speeds over 60kph and it gets worse the faster I go. The noise seems to go away when I turn to the left.

I just replaced the left wheel bearing because it had a lot of play. The new wheel bearing seemed to have a lot of play as well when I first put the rim on but everything seemed ok after being tightened up and I drove the car. I checked both sides after driving the car and there is no play at all on neither side.

I noticed the abs sensor was a little far from the hub and the light is still on. I thought it was just because my old wheel bearing had so much play that it wore the sensor. I only pressed it in with the electric impact but didn't use the breaker bar for the final tightening because there would have been to much stress on the upper mount without putting the ball joint back on. I'm thinking now that I didn't put the hub all the way.

After doing some searching I found that it may be a cv joint that's causing the vibration, is there any good way of checking them?

thanks

Edited by: tomanyvw on Mar 11, 2014 10:30 PM
FKH161

Posts: 7,634
Registered: 12/29/05
Re: Humming /vibration at speeds over 60kph - please help
Posted: Mar 12, 2014 11:22 PM   in response to: tomanyvw in response to: tomanyvw
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Front wheel bearings are noisy when you steer in the opposite direction... so if the noise goes away when you steer left, then the right is OK. Steer right and the noise comes back, then the left is bad.

The weight of the vehicle shifting to the opposite side is what causes the bad wheel bearing to get noisier (more load on that bearing).

Tighten the CV nut with a breaker bar and see if the noise goes away.

If your ABS Tone wheel is still "too far away from the sensor", remove the 3 phillips screws that secure the tone wheel to the hub and place 3 small washers between the tone wheel and the back of the hub (one washer for each screw)... this will bring the tone wheel closer to the sensor and will turn the abs light off.
tomanyvw

Posts: 2
Registered: 03/11/14
Re: Humming /vibration at speeds over 60kph - please help
Posted: Mar 13, 2014 1:53 AM   in response to: FKH161 in response to: FKH161
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Thanks for the reply. I just replaced the left wheel bearing but it sounds like its a bad bearing again. I thought I may have damaged the inner cv shaft but the vibration is always there, even if the car is just coasting the vibration is there until it gets below 55kph or I turn to the left. The bearing did have a lot of play until I tightened the drive shaft nut and test drove it. There is no play at all in the bearing anymore but I realize that means nothing, the bearing can make noise with out having play, I didn't think it would vibrate though. I've owned a lot of VW's and have felt a lot of vibrations, knocks, and rattles but no vibration like this one.

I've decided to order a new axle shaft/cv joints, ball joint, wheel bearing kit, hub, abs sensor, and tie rod assembly. I also bought a used spindle that looks clean. I'm going to replace everything in hopes I'll solve the vibration. I'm really hoping I can mark everything well enough that I don't need to get an alignment done after the job. I should be getting the parts this weekend then I just have to wait for a weekend without snow, lol. Replacing everything is probably a little over kill but I don't want to keep taking everything apart.

I was planning on jacking the car up today and letting it run in 5th gear to listen to where the noise is coming from but we had a lot of snow, maybe tomorrow if its warmer.

It may be awhile before I get it solved but I'll keep the forum updated.

Edited by: tomanyvw on Mar 13, 2014 1:54 AM

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