Bongo Fury

I'm not sure if this is anything to worry about, but I've noticed that I get a brief low-pitched rumble when the auto transmission changes up a gear. I mainly notice it going from third to fourth, e.g. as the van comes over the crest of a hill doing 40 to 50 mph.

Any ideas what this sound is?

2 wheel, 4 wheel drive, diesel ,petrol,

Sorry, it's a 4WD diesel, new shape.

What wheel set up do you have..?

I have one wheel in each corner All 225/55R18

That counts out the rolling circumference thing... Just a thought!

Odd, perhaps these wheels are the type that need spigot rings fitted and they are missing

Tony

They are RX8 alloys. Do they need spigot rings?

P-Med wrote:They are RX8 alloys. Do they need spigot rings?

Hi,sounds like you(the vehicle)may have a bit of clutch judder,check the condition of the transmission fluid.

Rx8 alloys centre bore 67.1
Bongo centre bore 67.1

Cheers.

have you put one or more new tyres on recently. and the rest are low/well worn.

All the tyres are new. Also, it was serviced by Alan Cook in Cheltenham only three weeks ago, and he said the transmission fluid was fine...

It sounds like you may have left it too long between meals. Does the rumbling subside after you have eaten?

Bit of a bushtucker challenge this one.... You sure you havent got these two in the back..? http://www.youtube.com/watch?v=KbBg-MMu ... ure=fvwrel

if youve eaten recently and theres no one in the back, check the centre bearing on the front prop, the front prop splines can also wear at the point it goes into the transfer case, grab it and give it a rapid twist and feel/listen for slap.

P-Med wrote:All the tyres are new. Also, it was serviced by Alan Cook in Cheltenham only three weeks ago, and he said the transmission fluid was fine...

are they the same make/brand, and all inflated to the same pressure.