Scraping noise when accelerating

Hi Jiri, I put up with a similar frustrating noise which took me almost a year to find. It sounded like a worn bearing. Mine came in at 2200 RPM (seems to be a bad range for TD5s).
My so called expert Land Rover dealer at the time assured me it was the flexible link in the exhaust, and it cost me over $600 to have it replaced. You guessed it, the annoying noise was still there, from the engine bay area.
I could never simulate it at standstill, only on the move, and going through 2200 RPM, after which it would go away.
I got a mate of mine to stand on the side of the road as I drove past, and he said it appeared to come from the wheel bay area.
Off with the wheel and presto, I find the disk protector plate was just touching the caliper. It would develop a harmonic vibration as it rubbed against the caliper, and that was the noise. A screwdriver under the plate to bend it slightly away from the caliper and it has been quite as a church mouse now for a couple of years.
I hope yours is that simple to fix.
Regards, FirstDisco

Thank you again for your help, guys. As I wrote already, the scraping/grinding noise comes at a high engine load only. After two weeks, when it appeared the first time, I can simulate the noise even without driving the car. Just apply brake and throttle (I have a manual transmission so it is a bit tricky :-) and after 2200 rpm it comes. A 'worn bearing' noise. So now I know that the noise is not related to the actual movement of the car and must come from the engine bay - most likely a pulley. I removed the fan and drove the car without it, noise still there. I checked all the pulleys, and there is a bit free play at the water pump. However, when turning the water pump pulley (even with some force), I didn't hear any noise. All other pulleys look solid.

Any advice what to do now? Just change the water pump and see if it cures the problem? Any other tests I could do?

What is the chance that the noise comes from the main shaft bearing? Is this a frequent thing? Any check I could do myself?

The belt tensioner is known to wear. Easy and cheap to replace.

i have exactly the same issue...it is the same noise & symptoms, although the disc shield sounds worth checking...i just turn the radio up now :D

Update 2: today I changed the water pump, and the noise is still there!!! Now I am getting into troubles https://www.aulro.com/afvb/images/im...011/01/926.jpg

I drove the car without the belt for a few seconds and I could hear the noise! This means that it is not related to any pulley, and the noise comes definetelly from the engine. Note again, that the noise is still there when braking and accelerating, without the actual movement of the car (transmission and drive train can be excluded).

What could be wrong? Main bearing? Please help!!!

I also observed that the engine is twisting to the right (when sitting inside the car) when under load. If the engine rubber mounts get soft during time and hence the engine is twisted more then usual, do you think that this could result in this grinding noise?

Have a read of this article before continuing.....sound like what you have

www.discovery2.co.uk / Crankshaft pulley* / TV damper replacement

Thanks catch-22. I checked the crankshaft pulley and it is rock solid. I think that for V8 it is of a different design than TD5.

I am also thinking, if such a noise could be caused by timing chain. I changed it 50t km back though. Any thoughts???

Sounds very frustrating mate.

You've mentioned you checked the manifold bolts, was this at engine level or where the manifolds meet the exhaust system pre-cat?

In either case, check that your manifold bolts are tight on the engine block, they can come loose, especially close to the firewall.
Get under the car and check that the nuts/bolts on the flange securing the exhuast system to the manifold are tight.
These often come loose and create all sorts of horrible noises that sounds a lot more expensive and scary that it actually is.
If they are loose, chances are that the gasket in the flange has blown out and needs replacement.
Be wary though, these nuts/bolts often freeze up and have a tendancy to snap off instead of being tightened or loosened. Replacements are cheap though, so it's not that big a deal.

if you want to find out if its a bearing change your oils and check the oil for metallic particles and shards of bearing. do the engine box and tcase, if the oil comes out nice and clean then its not an engine/box problem. Dont forget to open up the filters and have a look in them too.



Landies are very solid vehicles and noises radiate around them sounds that sound like they are coming from the engine can come from diffs and sounds that sound like they are coming from the back can be coming from the front...

(I cant get the sound file to download/play)

Thank you Dave. I will check the engine oil for metalic particles. I think the particles will be caught in the filter, will try to open it and have a look inside. The noise is not gearbox/t-case related, since I can simulate it when standing still and breaking/accelerating (creating pseudo high-engine load condition) without moving the car at all. This means that it comes somewhere between the crankshaft pulley and the clutch.