L322 Prop shaft Fabrication

Clutching at random straws (not even sure if they are relevant to your car):-

• has it had the front diff mod done?
• is yours petrol - could it be oil on the injector harness causing a missfire?

Pete

What are your diagnostics giving you, anything ?
I have a 6 way diagnostic electronic microphone set where you clip the 6 mics onto different parts of the car as in front to back and get somebody to keep switching between channels while you recreate the problem but the main issue with vibrations are they can be transferred around the car and through the bodywork and don't always point to the root cause.

I believe it's a Diesel, anyone looked at engine/box mounts. If not slap them with a wet cloot.

Hi, yes chassis ear is the same thing, mine just has six microphones so you can listen to multiple areas and flick between each one to try and narrow it down.
You can clip it on across the whole car and gradually narrow it down.. sometimes, it's not entirely straight forward
http://www.ebay.co.uk/itm/Car-Elect...670018?hash=item3d26208342:g:6dgAAOxyiRlSa-oq

This is how you tell if the front diff has been done.

http://www.rangerovers.net/forum/6-...3986-vogue-td6-auto-2005-no-transmission.html

Thanks. Guys at Gibsons have tried with chassis ear, no joy. I'll take a look at diff tomorrow.

Looking back over your earlier posts it still seems transmission to me, i wouldnt have thought they would have put in a brand new valve body so was it reconditioned at a reputable place and it would be interesting to know where these 'new' torque converters came from or where they were refurbished.
Very annoying for you and I take it they used the correct fluid in the transmission and the correct filling procedure, i am sure they know their stuff...
If you fancy some research have a google for anything RRPhil or Bemble related to do with the GM 5L40-E transmission which is what you have in the TD6
Here's something to get you started
http://www.rangerovers.net/forum/6-...8465-2005-td6-gm-transmission-oil-change.html

Thanks. They have a pretty good reputation and were recommended by the guys at Gibsons, who have been communicating directly with them, so I don't lose anything in translation. The torque converters are 'made' by Mackie transmission ( who they used to work for many, many, years, before setting up on own), again I trust the guys at Gibsons when they say they're a reputable company.
I should think fluids etc are done correctly as these guys do L322s on a regular basis, as well as all other types of landrovers. Each time I have been there, there have been LRs of one type or another being worked on, as well as other marques.
I will add that on the drive home the vibration felt 'different' and I didnt need to use triptronic so much. I'll know better tomorrow on a nice, straight, familiar, run to Gibsons. I am wondering if I have been unlucky enough to have had TC fail at the same time as something else, coupled with a dodgy replacement TC. Then the second TC fixing the TC issue but the judder remaining from another issue. It's just a thought and like I said one I'll be able to gauge better tomorrow. Would be bloody typical of the way things are going at the moment though.

That sounds promising then that they know what they are doing.
When we first replaced my transmission and we took it for a drive it still vibrated and i thought fudging marvellous but after a short period of time it stopped happening and has not been back since luckily and has now covered around 10k miles without a whiff of trouble..........
It could be the transmission solenoids learning or something like that
you could always give it such a damn good thrashing until whatever is vibrating breaks and then you will know

holidaychicken said:

That sounds promising then that they know what they are doing.
When we first replaced my transmission and we took it for a drive it still vibrated and i thought fudging marvellous but after a short period of time it stopped happening and has not been back since luckily and has now covered around 10k miles without a whiff of trouble..........
It could be the transmission solenoids learning or something like that
you could always give it such a damn good thrashing until whatever is vibrating breaks and then you will know

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Thanks for making me laugh but you can bugger off on that idea How short a time is a short time, that you drove for before it stopped?

I'd like to say GoldRover..... in ref. to a post where you mentioned you are sans an arm.....and with a vino distorted memory you were armed forces..... and then the recollection of me being a **** to you waaaay back whilst in igorance of this fact... well, thank you, thank you for doing what most of us could barely imagine doing!
I have a life free of turmoil or angst so may I offer my hand of genuine respect and admiration?

Is you lost it in a hoovering accident then that sucks but ignore the above!....

gold rover said:

Thanks for making me laugh but you can bugger off on that idea How short a time is a short time, that you drove for before it stopped?

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Short short, probably only a day or so of driving, you will get it sorted

Maybe it'll magically sort itself on the way to Gibsons tomorrow ....... not

You could do with a 4 wheel rolling road the same as I could when I was trying to identify slack in my drivetrain but never got around to it

Did they reset the gearbox adaptions??

The ECU 'learns' the required modulation of the valves to attain the best shift transitions and amount of slip etc.....as the clutch plates wear, the required modulation times change and the gearbox adapts to these requirements.

With a new box with new clutch plates, amount of valve modulation required will be different to what the ECU has 'learnt' and need to be reset so it can learn again.

If they have been reset, it could be the ECU is re-learning which can take a couple of hundred miles or so until it shifts smoothly and the clutch packs are fully bedded in.

But, it does sound GB or TC related......but also get them to look at the engine mounts....on the Td6 L322 they are 'active' and are hydraulically controlled....if they are leaking and loosing pressure, engine knock and vibration can be transmitted to the subframe and subsequently cause vibrations.

Ant where the hell have you been ;-)
I'm working on the premise that as the guys at Caledonian have L322s in on a weekly basis, they would know about its idiosyncrasies. However, I will check the engine mounts on Monday BUT todays test seems to still point to transmission and more so to TC.
Took her out with Gibsons mechanic , who has been the one working on her since the day I first took her there, although others have also checked her over, including Alan Gibson himself. I thought she felt a bit better but when on the test run, all became clear. Driving along without TC locked up, there is no vibration, the moment it locks, the vibration is back. What I think may have happened yesterday, is that I have adjusted my driving style to compensate for the fault.
My thought as I left Gibsobs ( noticed this typo and was going to change it but the way I'm feeling gibsobs it will remain ) was " the job is under warranty, so if it is still duff, drive it 'til it breaks". Yes Andy I know you said it first
So in summary will ask Caledonian about reset, will check engine mounts, will go for a nice long drive somewhere to get some miles on her.
After that I'm going postal

I have just read this thread from the beginning. It's good excersise to adapt my mind to the even greater turmoil of L322 owning, ready for the eventual upgrade.

First of all, sorry to hear your troubles. Some things are a pig to solve but that vibration is taking the p!ss.

I've had a thought about locating the source of the vibration if your next hear back from Caledonian/Engine mounts doesn't find the finish.
A company called Pico (other companies are also available) make diagnostic tools like oscilloscopes, current meters and NVH (noise, vibration and harshness) meters which work to very high precision and definition. If you can find someone within reach with a NVH meter, take them for a drive and at a steady known speed measure the frequency of the vibration and throw some maths at it you'll know whether it's coming from the wheels/axles, propshafts or gearbox. In theory.

Here's their product:
https://www.picoauto.com/products/noise-vibration-and-balancing/nvh-overview

Their software is pretty clever, you dial in the number of cylinders etc and will identify things from the waveform produced. Although I haven't used the NVH I have used their pressure transducer (similar concept) and I use a 'scope and current meters at work.

There's a guy in Preston, Frank Massey, who does a lot of product testing and reviews. I'm sure he would probably have one or know of one nearer to you.
http://www.autoinform.co.uk/

Thanks RubyRR, I will eliminate Monday's list of to do and then look into your suggestion. As said before all thoughts relevant to the matter taken on board.
Don't let my troubles put you off the L322, I had 5yrs or relatively trouble free enjoyment from mine before some Rickhead screwed up my engine, setting an avalanche in motion. How much I love mine is shown by how much I am willing to do to keep her

Addit: Forgot to say the guys at Caledonian tried another transfer box , known to have no issues, which did not make any difference, at same time they did an oil change on mine, oil was quite dirty. Again vibration remained. I still think that unless I really have changed my driving style to accomodate issue, it is not as bad, although still bad enough to be noticed on normal runs , as well as when doing test run. It is still most noticeable at 2000 revs on lock up.

Well they are worth the effort. If was the previous owners who screwed up my P38, all of them I recon! Still, it's something to do..

I'll keep watching. Good luck with it.

RubyRR said:

Well they are worth the effort. If was the previous owners who screwed up my P38, all of them I recon! Still, it's something to do..

I'll keep watching. Good luck with it.

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Thanks, those two links are really interesting, even if Monday brings a miracle , I'm going to look into that bit of kit a bit more. Might be something a retiree with time on hands could learn to use as a favour to others in the area.