Fiesta humming noise at speed

Mark_Hewitt

Ford Fiesta Mk7 1.6TDCi 58 reg with 97k miles.

For about the last 20k miles I've had a humming noise at speeds above 50mph or so. Been coming and going but it's worse now.

It seems to start quiet and increase in noise up to about 60mph, it decreases in volume once you go faster!

Sounds like it's coming from the front of the car. It is entirely dependent on speed, doesn't matter what gear I'm in, if the clutch is pressed etc.

I've changed my tyres for new ones, no difference.

jaydeeuk1

Wheel bearing imo

If you can be arsed, jack car up and give each of the wheels a wobble (top to bottom) and check for play. Chances are if one side is going the other will follow shortly

aileth

Agree with the wheel bearing. My parent's car had this problem and they had to have a bearing replaced when they took it in.

Mark_Hewitt

aileth wrote: »

Agree with the wheel bearing. My parent's car had this problem and they had to have a bearing replaced when they took it in.

Right, tbh that's what I thought it was. I'll get it booked into the garage to have it checked over.

What sort of cost am I looking at, lets say both fronts need replacing? Would the rears be an issue?

Also what would happen if I leave it too long?

Hintza

I have a hum (whine) too but mine is rear diff. Some thicker oil need to shut it up me thinks.

jase1

A hum that you haven't looked into for 20k miles?

Presumably there was an MOT/service somewhere in the middle of all those miles -- and a wheel bearing wasn't picked up then?

fivetide

Brakes don't judder do they?

I think wheel bearing too but there is the off chance of a warped disc.

Mark_Hewitt

jase1 wrote: »

A hum that you haven't looked into for 20k miles?

Presumably there was an MOT/service somewhere in the middle of all those miles -- and a wheel bearing wasn't picked up then?

Yes I mentioned it a few times, the Ford garage didn't find any issues. To be fair it wasn't as loud or as pronounced as it is now.

Mark_Hewitt

fivetide wrote: »

Brakes don't judder do they?

I think wheel bearing too but there is the off chance of a warped disc.

Had my front discs and pads replaced about a month ago. Made no difference.

jase1

Mark_Hewitt wrote: »

Yes I mentioned it a few times, the Ford garage didn't find any issues. To be fair it wasn't as loud or as pronounced as it is now.

Bizarre.

I'd have thought the obvious suspects for this problem would have caused an MOT failure. All except the tyres of course -- and they've already been replaced.

forgotmyname

Tyres, Bearings, Brakes, Diff, Gearbox etc..

Or from the engine side, Split turbo pipes or a worn turbo or exhaust issue.