Mazda MX-5

[jj48]

I hope someone can assist me with a " buzzing " sound on a MX-5. It starts at about 2500rpm and lasts to approx 3000rpm. If you hold the gearlever over to the N/S the noise stops. Any thoughts appreciated.
Richard

[rovermorris999]

Could be the nylon cup at the base of the gear lever is worn. It's an easy enough fix if it is that.

[Gilhooligan]

It may potentially be the heat shield on the cat.

[MX-5 Lazza]

Gilhooligan said:

It may potentially be the heat shield on the cat.

That's what I'd suggest.

[rovermorris999]

How would holding the gear lever affect the heat shield?

[MX-5 Lazza]

It might stop various things vibrating.

That said, there is a good chance that the upper & lower boots are shot and there is no oil in the turret so replacing those and the nylon cup would be a good idea. I've just never heard of that causing a rattle and not sure how that would happen as however loose the cup might be, it's buried beneath a gearstick in a gearbox turret and it's only a small nylon thing.

[Oldandslow]

My Gear nob buzzes at high revs, 6000+. Handy shift indicator . The grub screws holding it on work loose.

Heat shield is the most likely thing in that rev range but don't see how the gear stick would affect it.