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Vibration in reverse?

Started by _deantl2003_ , Nov 16 2012 08:41 PM

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19 replies to this topic

#1 _deantl2003_

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Posted 16 November 2012 - 08:41 PM

Hi, i have Lj Torana when i am reversing its vibrating a lot what could be causing problem?? Driving forward in all gears its normal...

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#2 S pack

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Posted 16 November 2012 - 09:15 PM

Hi, i have Lj Torana when i am reversing its vibrating a lot what could be causing problem?? Driving forward in all gears its normal...

Clutch shudder.
A number of things can cause a shudder. Primarily oil or grease contamination of the clutch plate linings or a faulty clutch plate.
Heat hardened spots (burnishing) on the flywheel face and or a faulty pressure plate can also be causes.
Other things to look for are faulty engine and/or rear gearbox mountings or rear suspension bushes.
I'm sure there are other factors that other wise people will add to the list.

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#3 _Quagmire_

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Posted 16 November 2012 - 09:44 PM

i'm not wise...but i had a old val do this to me when the diff was about to fail

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#4 _434LX_

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Posted 17 November 2012 - 08:45 AM

Crown wheel and pinion ?

If you give it some herbs in reverse, clutch in and pop it in neutral, letting it roll.
Does it still vibrate ?

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#5 _deantl2003_

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Posted 17 November 2012 - 11:28 AM

Clutch shudder.
A number of things can cause a shudder. Primarily oil or grease contamination of the clutch plate linings or a faulty clutch plate.
Heat hardened spots (burnishing) on the flywheel face and or a faulty pressure plate can also be causes.
Other things to look for are faulty engine and/or rear gearbox mountings or rear suspension bushes.
I'm sure there are other factors that other wise people will add to the list.

I had fly wheel machined, new clutch plate, pressure plate, thurst bearing, gearbox and engine mounting new and rear bushes replaced at moment i dont see any oil between engine and gearbox...

i'm not wise...but i had a old val do this to me when the diff was about to fail

I have used second diff and still same problem....

Crown wheel and pinion ?

If you give it some herbs in reverse, clutch in and pop it in neutral, letting it roll.
Does it still vibrate ?

I havent tryed but i will and see what happens and let you know...

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#6 _deantl2003_

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Posted 17 November 2012 - 11:31 AM

Thanks for your input here guys and hope to find out or get some more ideas so i can fix this problem... cheers
I will take car for drive today or tmrw...

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Posted 17 November 2012 - 11:38 AM

May not be oil, too much grease in the spigot bearing and/or on the input shaft splines can flick out and contaminate the clutch plate.

I'm sure I remember someone else posting in another thread on the same subject that improper bedding in of a new clutch can cause chatter marks on the flywheel face which then results in clutch shudder. :dontknow:

Strange how some times these things only happen in reverse gear and don't show up in the forward gears until the problem or damage becomes much worse.

Good luck tracking it down.
Cheers
Dave.

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#8 _Quagmire_

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Posted 17 November 2012 - 01:01 PM

i guess it's time to pull the box and inspect it....
seems you've narrowed it down to that one component

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#9 _oldjohnno_

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Posted 17 November 2012 - 01:46 PM

Checked your suspension bushes? In reverse the diff goes nose down and if the bushes are bad and there is more movement than normal the u-joint angle can cause roughness in reverse.

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#10 _deantl2003_

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Posted 18 November 2012 - 02:14 PM

Crown wheel and pinion ?

If you give it some herbs in reverse, clutch in and pop it in neutral, letting it roll.
Does it still vibrate ?

I have tryed today no vibrations rolling back...

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#11 _deantl2003_

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Posted 18 November 2012 - 02:19 PM

Checked your suspension bushes? In reverse the diff goes nose down and if the bushes are bad and there is more movement than normal the u-joint angle can cause roughness in reverse.

I have installed new bushes 6 months ago, today i jacked rear of car got in reverse no shakes .... only shakes when i got 4 wheels on ground.... do i need wheel alignment for rear wheels? next thing is adjusting clutch more? any ideas are wellcome cheers

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#12 _Bomber Watson_

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Posted 18 November 2012 - 02:34 PM

Even with new bushes the pinion angle coudl be way off and worse in reverse, is the car lowered? Stock gearbox location, etc?

Cheers.

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#13 _torbirdie_

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Posted 18 November 2012 - 02:38 PM

If the vibration is there while the clutch is being engaged then Id agree with some type of problem there, however, if the vibration is there when the clutch is fully engaged(foot off the clutch pedal) and you are sure there is no slipping then id suspect something else.

The drive forces on all the rear end drive train are reversed when the tailshaft spins in the opposite direction, Old Johnno's suggestions are good.

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#14 _deantl2003_

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Posted 18 November 2012 - 03:10 PM

Even with new bushes the pinion angle coudl be way off and worse in reverse, is the car lowered? Stock gearbox location, etc?

Cheers.

Car is not lowered,has new springs and shocker front and rear and reco standard 4 speed box...

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#15 axistr

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Posted 18 November 2012 - 03:15 PM

Check the right front engine mount, lift the bonnet let the clutch out and see if the engine lifts up on the right when you try and take off.

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#16 _deantl2003_

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Posted 18 November 2012 - 03:18 PM

If the vibration is there while the clutch is being engaged then Id agree with some type of problem there, however, if the vibration is there when the clutch is fully engaged(foot off the clutch pedal) and you are sure there is no slipping then id suspect something else.

The drive forces on all the rear end drive train are reversed when the tailshaft spins in the opposite direction, Old Johnno's suggestions are good.

Yes Johnnos suggestions are good, i can not say anything about slipping in reverse it just shakes, i have to take my time reversing adjusting clutch ledal with foot and light throtle...driving forward through all 4 gears no ptoblems and nooooo slipping even if you drop clutch....

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#17 _deantl2003_

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Posted 18 November 2012 - 03:21 PM

Check the right front engine mount, lift the bonnet let the clutch out and see if the engine lifts up on the right when you try and take off.

Have new engine mount installed recently but good sugestions and will check it out....thanks

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Posted 18 November 2012 - 03:23 PM

Yes Johnnos suggestions are good, i can not say anything about slipping in reverse it just shakes, i have to take my time reversing adjusting clutch ledal with foot and light throtle...driving forward through all 4 gears no ptoblems and nooooo slipping even if you drop clutch....

^^^ Sounds a lot like a clutch plate and/or pressure plate problem to me.