More Discovery 3 noises

[reb78]

I got a message from the other half earlier saying the D3 (57 plate 2.7 TDV6) was making a funny noise. Seemed louder down by the front grille. A clicking/tapping sound that seemed rotational (i.e. engine related). I suspected the aux belt tensioner pulley at the bottom left of the engine as you look at it as it didnt look great last time I was under the car and is on my list of things to change. By the time she got home it sounded normal and this noise had gone. It was a bit tappety clicky on startup for a second or two, but thats normal. Oil level is all ok. Its serviced every 10k by me and not due for about another 4k. It would have done around 5 miles when she noticed this so would have been warm.

I have a video but cant upload here raw, so if the zip file below has attached that might open the video. Any thoughts given the description above? I wonder if one (or more) of the hydraulic lifters was a bit sticky and its cleared - can that happen?

Once the D2 is MOT'd and back on the road, I am planning to take the D3 off of the road, do the timing belt, fuel pump belt, aux belt and tensioners and get those shocks from my other thread changed.

Oil pump has been changed as far as I know but will check when I get in there to do the timing belt - I wasnt planning to touch that unless it was the one without the strengthened casting. It will be on about 140k miles soon (57 plate) so is there anything else I should be doing as preventative maintenance?

 

[wyn]

The video works ok. sometimes have had funny noises on my D3 from the aux belt tensioner.

Mine is also 57 with 250k miles. Just before christmas i did the timing belt. It had the old style oil pump so had to change that too. The belt was 40k miles overdue and i had bought the new bits 6 years ago.

Removing the starter and alternator bracket to fit the locking tool was a pain but had to do it with the pump change. The actual belt change was easy enough.

 

[reb78]

The video works ok. sometimes have had funny noises on my D3 from the aux belt tensioner.

Mine is also 57 with 250k miles. Just before christmas i did the timing belt. It had the old style oil pump so had to change that too. The belt was 40k miles overdue and i had bought the new bits 6 years ago.

Removing the starter and alternator bracket to fit the locking tool was a pain but had to do it with the pump change. The actual belt change was easy enough.

Excellent. Thanks for the reassurance re how easy it is to do the belt. I have done plenty of timing belts, just never on this engine!

 

[wyn]

I thought the belt on it's own was very easy with the pins to time the cams.

Watched a few vids and was able to do the belt in an hour or so.

The oil pump change was easy enough apart from starter and alternator bracket.
i had to make a tool to hold the crank pulley for tightening the crank bolt.
I did buy 2 crank seals............the proper land rover one and some other aftermarket one just as it came with a fitting tool. I also machined a bit of aluminium to make a tool to push the crank seal 1mm under flush in the new pump

 

[Trevorleach]

Bet you a pint the a/c pump is soon going to die.

320 for the pump and an utter pita of a job to change.

 

[reb78]

Bet you a pint the a/c pump is soon going to die.

320 for the pump and an utter pita of a job to change.

Do they seize fail or die and turn? Only asking as I'll look more urgently at it I'd they seize as presumably will strip the belt if they do!

 

[Trevorleach]

Do they seize fail or die and turn? Only asking as I'll look more urgently at it I'd they seize as presumably will strip the belt if they do!

Mine made an odd rattle every now and then, being a good mechanic I ignored it! Few weeks later boiling hot day driving through town and the pump seized and the clutch fell apart into the engine tray as it is designed to do if the pump fails, vents started blowing hot air, and I turned to the wife and said well thats the a/c pump goosed.
The pump on these never fully disengages even when the system is turned off, and as mine had had various sow leaks over the years I had driven it with no gas so no oil going around the system, hence the seizure.

Belt was fine and I carried on driving it for a while before replacing the pump.

 

[reb78]

Mine made an odd rattle every now and then, being a good mechanic I ignored it! Few weeks later boiling hot day driving through town and the pump seized and the clutch fell apart into the engine tray as it is designed to do if the pump fails, vents started blowing hot air, and I turned to the wife and said well thats the a/c pump goosed.
The pump on these never fully disengages even when the system is turned off, and as mine had had various sow leaks over the years I had driven it with no gas so no oil going around the system, hence the seizure.

Belt was fine and I carried on driving it for a while before replacing the pump.

Hmm, does sound similar - we had a leak from the condenser. Regassed once but soon leaked back out so its probably had similar TBH. I never do AC stuff as i cant scavenge or regas the system so this may be one of the few garage jobs on this D3!

As long as the pump gear doesnt seize i wont rush too much!

Any advice on where to buy from? Are there any decent aftermarket suppliers for these if it is the pump?