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Topic: Another diff. noise thread (Read 2303 times) |
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Mike_Floutier
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'97 2.3 Ultima saloon lpg
 
Posts: 296
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Another diff. noise thread
« on: May 24th, 2008, 5:48pm » |
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Hi,
I'm still trying to track down my noise (see "donut" thread) and my thoughts have returned to the diff.
After a run today I got underneath it to have a look and I've got two questions:
1. How hot should it get normally - mine is too hot to touch for any length of time, is this normal? and
2. How little is too little Hypoid oil - my level is about half an inch below the plug hole?
Thanks
Mike
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gozz
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Re: Another diff. noise thread
« Reply #1 on: May 24th, 2008, 10:05pm » |
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Mike.
That level should be sufficient,but the casing should never be that hot.Sounds like excessive friction.
GOZZ.
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Mike_Floutier
Full Member
'97 2.3 Ultima saloon lpg
Posts: 296
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Re: Another diff. noise thread
« Reply #2 on: May 24th, 2008, 10:35pm » |
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Thanks Gozz,
I'll try syphoning it out and replacing it but I guess it's pretty worn after 300,000+ miles and I've never changed the oil.
My goal at this stage is to confirm whether or not it's causing my "noise". If it is then it would probably be worth replacing the diff.
If it's the autobox, I think I'll just get another car but it would be a pity as I like this one and it's fine apart from this noise.
THanks again.
Mike
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Another diff. noise thread
« Reply #3 on: May 25th, 2008, 1:34am » |
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A bad diff will usually make a low pitched droning noise that gets worse the faster you go.
As regards to checking the diff oil level....it should be up to the level of the bottom of the plug, on level ground  .......stick a finger in the hole & see if you have oil on the bottom of your finger........ If you do then the oil level is fine 
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gozz
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Re: Another diff. noise thread
« Reply #4 on: May 25th, 2008, 12:44pm » |
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Mike.
No point in changing the oil,if the diff IS noisy it's too late.
GOZZ.
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Mike_Floutier
Full Member
'97 2.3 Ultima saloon lpg
Posts: 296
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Re: Another diff. noise thread
« Reply #5 on: May 25th, 2008, 1:19pm » |
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What I'm trying to do is get some indication if it IS the diff.
To be honest I can't tell where the noise/vibration is coming from. When the garage told me the donut was split I thought the noise was from the front. Then when I start to think about the diff. I can hear it coming from the back - lol!
Mike
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mr._floppy
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Posts: 100
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Re: Another diff. noise thread
« Reply #6 on: May 26th, 2008, 1:00am » |
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I wouldn't be too worried about the heat of the diff casing ( try touching the engine sump after a run ), the hypoid oil is meant to get quite hot.
Anyway, the diff has other, better ways of communicating its imminent disintigration, like high-pitched screeching, then rumbling, then metallic crunching 
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gozz
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Re: Another diff. noise thread
« Reply #7 on: May 26th, 2008, 9:41am » |
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The engine sump has a fierce fire just above it !
GOZZ
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Highlander
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13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
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Re: Another diff. noise thread
« Reply #8 on: May 26th, 2008, 9:06pm » |
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Mike I have a 2.3 diff you can have in the next week or so. worth a shot, they arent too bad to change
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on Oct 17th, 2011, 12:35pm, Simmo wrote:I give up !  Too much for an old boy!  |
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Mike_Floutier
Full Member
'97 2.3 Ultima saloon lpg
Posts: 296
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Re: Another diff. noise thread
« Reply #9 on: May 26th, 2008, 11:22pm » |
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Highlander,
You are a star, I was just driving home from London in the rain thinking to myself; "I wonder if Highlander has a diff?" (I kid you not!).
I drained my diff. this morning and refilled it with new Hypoid oil just to see if I could tell any difference and my impression is that it's a little noisier and the noisiest bits have moved to slightly different speeds so I'm pretty convinced that it's the diff.
I just want to take the car to an autobox specialist in the morning to rule out the box so if he thinks it's the diff. then I'll be exceedingly happy to take up your kind offer.
Thanks a lot!
Mike
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Highlander
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Re: Another diff. noise thread
« Reply #10 on: May 27th, 2008, 9:55am » |
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Still using the car at the moment but the mot runs out in a couple of weeks and it'll be heading to China in some form or another not long after that once the goodies have been removed
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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Mike_Floutier
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'97 2.3 Ultima saloon lpg
Posts: 296
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Re: Another diff. noise thread
« Reply #11 on: May 27th, 2008, 12:28pm » |
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Ah-so!
The autobox man had a really good test drive with my 2.3 today and he is quite happy with the box. Also he didn't think the diff. was a problem.
He thought the noises/vibration were probably being caused by the propshaft and suggested that autobox suspension mount wear could be the culprit (although he felt propshaft problems of this sort could be hard to track down).
Highlander, would you be able to let me have the said autobox suspension mounting when your car is available?
Thanks
Mike
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Highlander
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Re: Another diff. noise thread
« Reply #12 on: May 27th, 2008, 1:20pm » |
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Its a manual although i may have one somewhere else
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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Mike_Floutier
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'97 2.3 Ultima saloon lpg
Posts: 296
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Re: Another diff. noise thread
« Reply #13 on: May 27th, 2008, 5:59pm » |
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Thanks Highlander, that would be great!
Mike
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Mike_Floutier
Full Member
'97 2.3 Ultima saloon lpg
Posts: 296
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Re: Another diff. noise thread
« Reply #14 on: May 28th, 2008, 6:55pm » |
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Highlander,
I think I'm definitely interested in the diff. from your 2.3.
I lifted the rear seat today to listen to the diff. more clearly. What amazed me was that the bottom of the seat was almost too hot to hold; I couldn't believe it until I realised that it sits on top of the diff.
Thanks again!
Mike
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a900one
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A scorpio is for life not just for christmas
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Re: Another diff. noise thread
« Reply #15 on: Jun 8th, 2008, 7:23pm » |
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Put some molyslip gearbox additive in it.
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Mike_Floutier
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'97 2.3 Ultima saloon lpg
Posts: 296
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Re: Another diff. noise thread
« Reply #16 on: Jun 8th, 2008, 7:53pm » |
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Thanks a900one,
I tried that when I changed the hypoid oil and it actually got worse.
But that's good 'cos at least I knew for certain that it was the diff. that was making the noise/vibration.
Mike
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Highlander
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Re: Another diff. noise thread
« Reply #17 on: Jul 17th, 2008, 10:10am » |
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The diff has landed 
Hope that solves the problem!
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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Mike_Floutier
Full Member
'97 2.3 Ultima saloon lpg
Posts: 296
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Re: Another diff. noise thread
« Reply #18 on: Jul 17th, 2008, 12:00pm » |
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Thank you Highlander,
It has landed indeed, I'm just glad it didn't land on my foot cos it's certainly heavy - even the delivery man was struggling - lol.
Will post when it's fitted to let you know the result.
Thanks again!
Mike
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Highlander
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Re: Another diff. noise thread
« Reply #19 on: Jul 17th, 2008, 12:03pm » |
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The backplates are interchangeable Mike, just in case you have the older single centre mount type and not the double side mounts like that one.
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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