Odd noise from a Skoda Fabia 1.4 classic.

Jul 21, 2007 10 Replies

All sounds normal when revs held and stationary.



Accelerating gently or hard, nothing until 30, then a speed related droning kicks in. It changes with road speed, but not engine speed.



It sounds the same at 30 in 3rd and 30 in 4th, but 30 in 4th sounds different to 40 in 4th.



Sounds similar with the window up and down, but hard to pinpoint.



First thought was exhaust, but it doesn't change with revs. Next thought was wheel bearing, but it is constant not drumming. Don't think it is a CV joint as as it doesn't click and only comes in at speed, and doesn't change on corners.



Any opinions on what might have worn/broken on year 2000 VAG kit with



60ishK on the clock? Steering and brakes appear to work the same as before.

The missus says it started to make the noise about a month back, but she only drives a few miles a week (short distance but NSL roads), and we rarely use her car when travelling together so I didn't get to hear it until today. Doesn't sound like anything I've heard before, but it doesn't sound right.


Sounds like it's coming from the diff.

Steve

Check to see if it's wind-related. On a windy day, does it start at a lower road speed when driving into the wind than it does when driving with the wind?

John

What do you mean by not drumming?

Droning is generally wheel bearing issues. Is the noise still the same when under varying engine loads? If it is, then it's most likely a wheel bearing.

wheel bearing probably, check by knocking it out of gear and rolling along. also a change in tone if you corner is another good indication of wheel bearing

Last couple of cars I've had with wheel bearing issues when from nothing to a "dub, dub, dub" speed related noise pretty quickly.

Yes, no change under engine speed or load, just road speed.

Doesn't seem to be different. Was pretty intrusive on at arround town speeds (30 limit no traffic), no matter what direction of travel.

I'll get her to try that, didn't notice the change on corners, but the last time I was with her in the car, they were all slow corners so below the speed it kicked in.

Hmmm, one thing I hadn't thought of, and there isn't any dipstick for the gearbox/diff.

Elder wrote in news: snipped-for-privacy@news.individual.net:

It does seem to be wheel bearing noise to me. With these new fangled hydraulically pressed in one that need 18 gazillion torques on the hub nut, it is harder to find a slack wheel by lifting and shoogling it. Take all the wheels off and spin the hubs to see if one feels rougher than the others. You won't feel a difference if you leave the wheel on, unless it is really knackered. The other fix, according to a mechanic friend, is turn the ICE up until you can't hear the problem. :-)

Tyres worn out of round maybe. I had the same thing on my Alfa, thought it was the wheel bearing. Changed the tyres as recomended by the garage and it cleared it up.

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