another strange noise thread

[AJ68]

ive just noticed a slight engine noise(or maybe its in my head :001_huh but when accelerating no issues, or maybe i cant hear it. but when in low gears (1-4 mostly) and coasting without my foot on the throttle, happens mostly downhill, theres a slight ' whining' noise coming from under bonnet. if i take it out of gear it disappears. any ideas would be great, or is this just 'normal' ? iam sure it didnt make this noise previously.
cheers
andrew, liking the new look site, excellent.

 

[Foxspeed]

probably gearbox/diff whine on the over-run you can here!

results from the gears moving slightly in and out of mesh when on the power or over-run

 

[Leethelips]

I would say it's just the gearbox "freewheeling" while it is under load the gears will be in full mesh so will not make a noise.
When not under load there will be some backlash which is where the "whine" is probably coming from . I was service engineer for a gearbox company for a while and that's how I see it. ( someone in the know about 197's may know better) as reading the threads there are some issues with the boxes

 

[kash]

probably gearbox/diff whine on the over-run you can here!

results from the gears moving slightly in and out of mesh when on the power or over-run

Anything to worry about? Mines always done it and ive just taken it as being normal

 

[Foxspeed]

Anything to worry about? Mines always done it and ive just taken it as being normal

the tl4 in the 197/200 is a bit "whiney" box as mine did so I wouldn't worry too much

 

[Gez]

It's nothing to worry about, that's just the normal noise they make

 

[AJ68]

Cheers fellas , you've put my mind at rest that's it's normal , like I said it's only a slight whine and does appear to be coming from the gearbox . In future, all acceleration, no coasting!

 

[revvin_k]

Mine does it too, glad to hear its common/normal I was a little paranoid.