MorganP104
Member
- Posts
- 18
- Location
- Hertfordshire, UK
Hey folks. My 4.4 L322 (ZF 5HP24 'box) is not driving as smoothly as she should.
At low to medium speeds (20-50mph), I get the occasional judder from the gearbox/drivetrain, which is usually followed by a loud humming/vibration, which passes if I accelerate. I've narrowed it down to being the gearbox (I think), as the noise goes away immediately if I slip the gear selector into neutral.
Additional information: When selecting reverse, there is often (but not always) a jolt as the car moves backwards. The judder/vibration/noise/jolting is worse when the car is up to temperature.
I had the gearbox oil drained & refilled (filter done at the same time), but it's made absolutely no difference.
In all other respects, the car drives wonderfully, and changes gear without issue - it's just the juddering and the vibration/loud humming noise that worries me.
If anyone's got any advice on what this could be, I'd be most grateful. Had a quote today from a recon gearbox specialist, who tell me they'll happily rebuild my gearbox for the thick end of two grand... I'd like to avoid a bill like that if possible.
Thanks in advance for any help/advice.
At low to medium speeds (20-50mph), I get the occasional judder from the gearbox/drivetrain, which is usually followed by a loud humming/vibration, which passes if I accelerate. I've narrowed it down to being the gearbox (I think), as the noise goes away immediately if I slip the gear selector into neutral.
Additional information: When selecting reverse, there is often (but not always) a jolt as the car moves backwards. The judder/vibration/noise/jolting is worse when the car is up to temperature.
I had the gearbox oil drained & refilled (filter done at the same time), but it's made absolutely no difference.
In all other respects, the car drives wonderfully, and changes gear without issue - it's just the juddering and the vibration/loud humming noise that worries me.
If anyone's got any advice on what this could be, I'd be most grateful. Had a quote today from a recon gearbox specialist, who tell me they'll happily rebuild my gearbox for the thick end of two grand... I'd like to avoid a bill like that if possible.
Thanks in advance for any help/advice.