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whining noise... have a feeling it might be the differential
Posted: Sun May 13, 2012 12:01 pm
by tomothy94
...but i have absolutely no idea! that's just a wild guess... it's weird, it appears up until about 37 mph then goes a bit quieter until 50 when it is noticeable again. any ideas?
Re: whining noise... have a feeling it might be the differential
Posted: Sun May 13, 2012 12:36 pm
by bmcecosse
Any oil in the final drive? And in the gearbox ??
Re: whining noise... have a feeling it might be the differential
Posted: Sun May 13, 2012 5:32 pm
by tomothy94
drained the diff this morning - there wasn't a lot there, but then re filled it with EP90. noise is still present
will check gearbox now but last time i tried it it was full. this noise has persisted for ages and i've only just got round to putting the diff oil in -.-
Re: whining noise... have a feeling it might be the differential
Posted: Sun May 13, 2012 6:30 pm
by bmcecosse
It likely is the final drive... may be possible to improve it by making adjustments.. Is it really intrusive?
Re: whining noise... have a feeling it might be the differential
Posted: Sun May 13, 2012 7:05 pm
by tomothy94
well, its loud enough that i'd like it to go away :/
Re: whining noise... have a feeling it might be the differential
Posted: Sun May 13, 2012 8:12 pm
by bmcecosse
Buy another one cheaply and swop over......what ratio is the final drive ? It should be a 4.22 in that age car - may be a good chance to upgrade to a 3.9........
Re: whining noise... have a feeling it might be the differential
Posted: Sun May 13, 2012 8:30 pm
by tomothy94
hmmm... what are the benefits of a higher diff?
Re: whining noise... have a feeling it might be the differential
Posted: Sun May 13, 2012 8:43 pm
by mike.perry
tomothy94 wrote:hmmm... what are the benefits of a higher diff?
Slower acceleration!
Re: whining noise... have a feeling it might be the differential
Posted: Sun May 13, 2012 9:00 pm
by bmcecosse
Quieter cruising and improved fuel economy....in theory anyway. It's a LOWER ratio final drive, the 'diff' remains the same.