If drive shaft is gone replace it. Raise the car once more Look at the cv boots and shaft put car in nuetral car off key in ignition shift selector in neutral emergency brake on. position yourself by the wheel and observe the cv boot and joints rotate unisom or together on one side if not replace it check on both sides inner and outer. Then check opposite wheel
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First get vehicle off ground make sure its supported good then with wheels off the ground see if any play in wheel see if moves up/down and side to side if any play or if when driving it makes a noise try swerving slightly side to side if noise changes the hub is going bad so when the noise stops it will be the opposite side that you turn so if you turn left no noise it will be on right side and so on hope this helps you
humming could be wheel bearings - jack car up and spin wheels - they should feel and sound smooth. Grab top and bottom of tyre and try and move backwards and forwards, if it does - whell bearing shot or needs tightening.
Transmission noise could be a driveshaft or gearbox mount being worn / broken. Jack up and move all these bits about and llok / hear for movement and you'll find the mount.
I have the same problem. I had five new bearings fitted ... one on each wheel and one on the long drive shaft. The noise is now ten times worse so I would guess a faulty "new" bearing being fitted. Ford say that it can only be the final drive bearings in the gearbox now which means an exchange gearbox (not expensive ... around £350 - £400) but add labour and fitting a new clutch while the opportunity is there, I'm giving £700 a nasty look. If I am in neutral with engine running, the noise is not there. If I coast out of gear (with clutch in or out), the noise is there ... can only be the wheel bearings or gearbox driveshaft bearings.
firstly i would take it back to the garage i got it repaired at. but does the knocking get worse the faster you get or is it only on turning on full lock? if its when turning could be a faulty CV joint, could be that the driveshaft is not located back in the gearbox correctly, i would take it back to the garage
First check to see if the driveshafts are turning, they are the things that stick out either side of the gearbox. start engine put car in gear. and let the clutch up, if you have no drive, open the bonnet and see if the gearbox end of the driveshaft or the wheel end of the driveshaft is moving. if one or the other is (remember to look both sides of the gearbox 2 driveshafts) you have a driveshaft or hub fault. If all is well and nothing is loose or moving the problem is either clutch or internal to the gearbox. this will require removale of the gearbox. approx 5 hours labour remove and refit plus parts required on inspection.