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Author Topic: LSD problem.  (Read 2977 times)

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Mutha Jugs n Speed

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LSD problem.
« on: 12 February 2019, 18:10:58 »

Trying to figure out what the problem is with the 3.2 auto, this is only pulling away on left or right angles i.e roundabouts and junctions....the problem being that as I start to pull away, I get a fairly loud clicking and vibration from the rear end,IIRC this may have been dealt with a fair while ago,but a search didn't reveal anything..mileage is currently 102k. TIA :y
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Doctor Gollum

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Re: LSD problem.
« Reply #1 on: 12 February 2019, 20:35:23 »

Diff issue?

Oil level OK? CV joints OK?
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Vega

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Re: LSD problem.
« Reply #2 on: 12 February 2019, 20:49:21 »

If it feels like a bad shock absorber on one side, then your LSD is worn out.
While driving it will engage en disengage and that feels like a bad shock.
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Mutha Jugs n Speed

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Re: LSD problem.
« Reply #3 on: 12 February 2019, 20:58:57 »

The shocks are virtually brand new Bilstein B4's fitted nine months ago,so Im thinking it's got to be one or even both of the possibilities that Dr G has outlined.  ::)
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Vega

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Re: LSD problem.
« Reply #4 on: 12 February 2019, 23:18:32 »

I am not saying that your shocks are bad, but it feels like it, but only if you have a LSD
If you have a normal diff, oil, bearings, to much play.

I get a fairly loud clicking and vibration from the rear end

And then you get this
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Mutha Jugs n Speed

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Re: LSD problem.
« Reply #5 on: 13 February 2019, 08:33:51 »

Once the car is under power,everything is normal except for the initial start off, diff is quiet...no whine or rumble. Will have to get the whole thing checked out. ::)
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Kevin Wood

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Re: LSD problem.
« Reply #6 on: 13 February 2019, 09:18:58 »

Might be worth changing the diff oil, adding the correct LSD additive, before doing anything more drastic.
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jb

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Re: LSD problem.
« Reply #7 on: 14 February 2019, 20:56:04 »

Known issue once diff oil well used....yours could be 15yrs plus old..easy fix, drain old oil and replenish with correct oil and the little tube of gm friction modifier
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Mutha Jugs n Speed

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Re: LSD problem.
« Reply #8 on: 14 February 2019, 21:47:18 »

Advice taken.....going up to Serek's place next Friday, CV joints check and diff oil change.....fingers crossed that will cure the problem :y
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Doctor Gollum

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Re: LSD problem.
« Reply #9 on: 14 February 2019, 22:07:09 »

Might also be a dicky gearbox mount...

Easy enough to check and change if required  :y
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Mutha Jugs n Speed

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Re: LSD problem.
« Reply #10 on: 14 February 2019, 22:10:49 »

Cheers Al,I'll stick it on the list :y
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zirk

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Re: LSD problem.
« Reply #11 on: 15 February 2019, 02:07:30 »

In my experience of LSD's on the Omega, and I had a few now, is that they do thump, or a slight knock when pulling left or right out of  a junction, does they noise get louder or quieter with the TC off.
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Kevin Wood

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Re: LSD problem.
« Reply #12 on: 15 February 2019, 11:31:26 »

Might also be a dicky gearbox mount...

Easy enough to check and change if required  :y

Yep. Worth checking the centre propshaft support while you're under there too.
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Mutha Jugs n Speed

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Re: LSD problem.
« Reply #13 on: 15 February 2019, 22:23:39 »

Will pass that on to Serek, I haven't driven the car with the traction control on....will give it a look tomorrow :y
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GastronomicKleptomaniac

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Re: LSD problem.
« Reply #14 on: 19 February 2019, 21:23:41 »

Mine was doing this last year. Changed the oil (with correct LSD oil, of course), no more problems. Not a bad job to do.
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