Thread: The ultimate solution to Td5 vibration / knocking

Originally Posted by Brian

Still havnt read this thread right through yet, but let me tell you about a small vibration on my TD5.
Barely noticable, done 200,00Km, and was looking under the bonnet one day with engine running and heard a rattle. Couldn't believe it, reached in and put my hand on the little plastic cover over the oil filler, lo and behold, no more vibration/rattle. Seemes the foam on the underside has detiorated to the point of not being there anymore.
Problem solved, maybe all you guys should also test this cover for the rattle.

regards
Brian

Cheers Brian. But I've said it before and I'll say it again - the issue discussed in this thread is NOT a rattle, it is a harmonic vibration. They are very different.

Originally Posted by OffTrack

I dont wish to be rude but you might like to read the preceding 18 pages of this thread. The various permutation of the problem are discussed at length and often a number of times.

I read the thread before posting. Its seems different people have experienced different vibrations/rattles. Whether it be curing the handbrake by removing the anti rattle spring or swapping the harmonic balancer.

All I can say is having swapped everything, including new engine, ashcroft torque converter and all new looms, engine and gearbox including every sensor on the engine, my discovery td5 auto still made a misfire type rumble type noise at 2250 revs. This made worse by the auto box having pre set gearchange points.

Many people say its a harmonic of the engine. Thats just an excuse, these vehicles didn't do this when new. Its just easier to say this, as they haven't got a clue what it is.

The cure for me to the 2250 engine behavior was to sort out the ace pressure due to a failing pressure control coil on the valve block. This was found by carrying out an ace system service and calibration.

I hope this helps someone.

Originally Posted by sabredylan

I read the thread before posting. Its seems different people have experienced different vibrations/rattles. Whether it be curing the handbrake by removing the anti rattle spring or swapping the harmonic balancer.

All I can say is having swapped everything, including new engine, ashcroft torque converter and all new looms, engine and gearbox including every sensor on the engine, my discovery td5 auto still made a misfire type rumble type noise at 2250 revs. This made worse by the auto box having pre set gearchange points.

Many people say its a harmonic of the engine. Thats just an excuse, these vehicles didn't do this when new. Its just easier to say this, as they haven't got a clue what it is.

The cure for me to the 2250 engine behavior was to sort out the ace pressure due to a failing pressure control coil on the valve block. This was found by carrying out an ace system service and calibration.

I hope this helps someone.

Very happy for you that yours is fixed. For the rest of us without ACE your comments will obviously sound hollow. Uncanny, to be sure, that we seem to have the same problem at 2250 rpm but no ACE fitted. Most of us have come to the conclusion that there is a harmonic at those revs that gets worse with engine wear and age and as flexion and laxity etc gets worse in a number of components well documented in this thread. At new, the engine mounts, harmonic balancer etc are all in top shape and the engine without any wear and thus no harshness felt. The harmonic probably there from new but managed with all the components in good shape. As the components age the harmonic is unmasked. Either way annoying.

Originally Posted by sabredylan

I read the thread before posting. Its seems different people have experienced different vibrations/rattles. Whether it be curing the handbrake by removing the anti rattle spring or swapping the harmonic balancer.

All I can say is having swapped everything, including new engine, ashcroft torque converter and all new looms, engine and gearbox including every sensor on the engine, my discovery td5 auto still made a misfire type rumble type noise at 2250 revs. This made worse by the auto box having pre set gearchange points.

Many people say its a harmonic of the engine. Thats just an excuse, these vehicles didn't do this when new. Its just easier to say this, as they haven't got a clue what it is.

The cure for me to the 2250 engine behavior was to sort out the ace pressure due to a failing pressure control coil on the valve block. This was found by carrying out an ace system service and calibration.

I hope this helps someone.

I think they all have the 2250 RPM drone some worse than others. My 2001 D2 had it from day one and I complained to Land Rover - they had technical people evaluate it and eventually concluded there was nothing that could be dome to resolve it.

Before I bought my 2004 D2 I insisted on test driving it before signing on the dotted line. It was almost not noticeable but it was there - much better than the 2001.

It has become worse so I would tend to agree with the ageing of parts theory being a part of the cause. I wonder if it's the 5 cylinder thingas well.

Originally Posted by Franz

I think they all have the 2250 RPM drone some worse than others. My 2001 D2 had it from day one and I complained to Land Rover - they had technical people evaluate it and eventually concluded there was nothing that could be dome to resolve it.

Before I bought my 2004 D2 I insisted on test driving it before signing on the dotted line. It was almost not noticeable but it was there - much better than the 2001.

It has become worse so I would tend to agree with the ageing of parts theory being a part of the cause. I wonder if it's the 5 cylinder thingas well.

Hi Franz,

Do you know what the VIN of your 2001 D2 was by any chance? There was a change made to the driveshaft spec after 19 Feb 2001 to reduce vibration transmission into the cabin on Td5 Auto's. It would be interesting to find out if your earlier vehicle came with this updated shaft.

cheers
Paul

Originally Posted by OffTrack

Hi Franz,

Do you know what the VIN of your 2001 D2 was by any chance? There was a change made to the driveshaft spec after 19 Feb 2001 to reduce vibration transmission into the cabin on Td5 Auto's. It would be interesting to find out if your earlier vehicle came with this updated shaft.

cheers
Paul

Hi Paul,

Ditched all the old paperwork recently and a quick scan revealed nothing.

If I find the VIN, I'll let you know.

Cheers,

Franz

Originally Posted by OffTrack

Hi Franz,

Do you know what the VIN of your 2001 D2 was by any chance? There was a change made to the driveshaft spec after 19 Feb 2001 to reduce vibration transmission into the cabin on Td5 Auto's. It would be interesting to find out if your earlier vehicle came with this updated shaft.

cheers
Paul

OK , found it - SALLTGM931A708640

Cheers,

Franz

Originally Posted by OffTrack

Hi Franz,

Do you know what the VIN of your 2001 D2 was by any chance? There was a change made to the driveshaft spec after 19 Feb 2001 to reduce vibration transmission into the cabin on Td5 Auto's. It would be interesting to find out if your earlier vehicle came with this updated shaft.

cheers
Paul

Is the updated shaft the one with no grease point and lots of ball bearings instead of a spline? Mine 06/2001.