Grating/ clinking noise when revved hard

dwyryd1 · Post by **dwyryd1** » Fri Jul 20, 2007 9:12 pm

Our Bongo has been making a grating/ clinking noise when it is revved hard, normally when pulling away from junctions/ accelerating:

- appears to be coming from middle to rear near side

- sounds like cross between metal being drawn across a cheese grater and
glass bottles clinking together

- only occurs when accelerating/ revving hard but not when standing still

- can hear the noise clearly inside and outside the Bongo

- our mechanic can not see anything obvious

PLEASE HELP!!

Seeker · Post by **Seeker** » Fri Jul 20, 2007 9:34 pm

Sounds like a bearing disintergrated!

Jack each wheel up in turn and see if there is anyplay when you try to pull it in and out!

dwyryd1 · Post by **dwyryd1** » Fri Jul 20, 2007 9:36 pm

Thanks for the reply, but don't think the noise is coming from a wheel and does not get worse when cornering. Might be worth a check though!

ChrisEm · Post by **ChrisEm** » Fri Jul 20, 2007 10:56 pm

Have you checked the uj's on your propshafts?

mikeonb4c · Post by **mikeonb4c** » Fri Jul 20, 2007 10:57 pm

Have you lifted the engine bay covers and had a good listen. Maybe a crude ear trumpet made from a length of garden hose, maybe with a funnel on the end away from your ear, might help locate a source of the noise above the general engine bay cacophony - not practical while driving of course!

dwyryd1 · Post by **dwyryd1** » Sun Jul 22, 2007 7:07 pm

Thanks for the ideas. Will try them. Any more techies out there?

dreamwarrioruk · Post by **dreamwarrioruk** » Sun Jul 22, 2007 7:24 pm

is it only when driving, you say revving but not when standing still.
if its when driving its either wheels, gearbox or rear axle/propshaft. is yours 2 wheel drive or 4.

dwyryd1 · Post by **dwyryd1** » Mon Jul 23, 2007 7:58 pm

We have 4wd.
Only occurs when pulling away from junctions and accelerating at relatively low speeds (below 30mph).

Post by **westonwarrior** » Mon Jul 23, 2007 8:02 pm

so it occurs when reving hard but only up to 30 mph? when starting off not while crusing, how about breaking?

I am wondering if you have something loose in your tool compartment thats sliding back when you accelerate. probably a silly idea

dwyryd1 · Post by **dwyryd1** » Mon Jul 23, 2007 8:14 pm

No noise on braking but occassionally when going over pot holes and bumps.
Quite nosy from outside.

Steve L · Post by **Steve L** » Mon Jul 23, 2007 10:00 pm

Could it be something like a loose baffle in the exhaust?