Clunk on accelerating and driveshaft noise?

[nhudson1]

Hi people. Car is a Ford Focus MK3 1.6 TDCI - 80k miles.

On accelerating, at any speed, there is a single clunk/knock each time that I can feel in the steering wheel and pedal. From the the youtube video link below, you can hear it quite clearly when I turn the hub assembly by hand.

When I pull on the drivers side driveshaft, there is a bit of lateral movement, the garage I've dropped the car off to are not 100% sure its a driveshaft issue, but they reckon its the first place to start.

I didn't have ANY issues with the car until FORD replaced my clutch, flywheel and slave cylinder around 6 months ago... since then it's just started falling apart.

Any ideas? Thanks in advance!

https://www.youtube.com/watch?v=iwCN0dyvcdU

[GreenV8S]

That knocking didn't sound like the sort of dull clunk you'd get from the CV joint. It almost sounded as if the hub was loose on the output shaft. Exactly where was the noise coming from?

[E-bmw]

I would agree with that diagnosis.

[GreenV8S]

nhudson1 said:

On accelerating, at any speed, there is a single clunk/knock each time that I can feel in the steering wheel and pedal.

This caught my eye on re-reading. The fact you feel it through the steering and pedals is a major red flag. Normal drive line shunt doesn't normally feed back like that. If that was mine, I'd treat this as potentially dangerous until you knew what was causing it.

[nhudson1]

I couldn't really tell, I "thought" it was coming from either of the 2x joins in the shaft, but I was thinking more the inner joint rather than the CV.

[nhudson1]

GreenV8S said:

This caught my eye on re-reading. The fact you feel it through the steering and pedals is a major red flag. Normal drive line shunt doesn't normally feed back like that. If that was mine, I'd treat this as potentially dangerous until you knew what was causing it.

It's in the garage ready to be looked at on Monday.

Following the passenger side hub bearing failing 30 miles after Ford had the shafts off to drop the gearbox... and I mean it developed up/down/left/right movement. Ford just said things fail over time, wear and tear.

As seen here - https://www.youtube.com/watch?v=jfPp7rgD1IY&fe...

Edited by nhudson1 on Saturday 26th January 21:44