Rumbling sound on changing up a gear

P-Med · Post by **P-Med** » Tue May 22, 2012 12:11 am

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?

Northern Bongolow · Post by **Northern Bongolow** » Tue May 22, 2012 3:43 am

2 wheel, 4 wheel drive, diesel ,petrol,

P-Med · Post by **P-Med** » Tue May 22, 2012 8:50 am

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

jaylee · Post by **jaylee** » Tue May 22, 2012 9:03 am

What wheel set up do you have..?

P-Med · Post by **P-Med** » Tue May 22, 2012 3:25 pm

I have one wheel in each corner

All 225/55R18

jaylee · Post by **jaylee** » Tue May 22, 2012 6:09 pm

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

MountainGoat · Post by **MountainGoat** » Tue May 22, 2012 6:14 pm

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

Tony

P-Med · Post by **P-Med** » Tue May 22, 2012 7:03 pm

They are RX8 alloys. Do they need spigot rings?

rita · Post by **rita** » Tue May 22, 2012 7:28 pm

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.

Northern Bongolow · Post by **Northern Bongolow** » Wed May 23, 2012 12:42 am

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

P-Med · Post by **P-Med** » Wed May 23, 2012 10:32 am

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...

dunslair · Post by **dunslair** » Wed May 23, 2012 11:06 am

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

jaylee · Post by **jaylee** » Wed May 23, 2012 11:09 am

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

Northern Bongolow · Post by **Northern Bongolow** » Thu May 24, 2012 12:52 am

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.

Northern Bongolow · Post by **Northern Bongolow** » Thu May 24, 2012 12:54 am

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.

Rumbling sound on changing up a gear

Rumbling sound on changing up a gear

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