Annoying metallic rattle
 

I get this annoying matallic clatter, on my 75 diesel but only when I am on the move. Starting the engine at idle, no sound and I don't get the sound when I rev the car in a stationary position.

I have repaired the back and middle heat shields on the exhaust, they had gone walkabout but it wasn't that. I have been under the car, I had a similar noise which turned out to be a loose bolt on the drive shaft to engine mount backplate. i hadn't done it up tight enough during clutch change. Everything is tight on. It sounds like something is loose but I can't find it.

For the life of me I can't find out where this noise is coming from? Any ideas.

I had an annoying rattle that resonated at 2000 revs, no matter what gear. I was certain that it was the heat shield on the rear exhaust and as you did, took them off and reseated them, to no avail.

When I was trying to sort out the interior lights on another 75, I found something which caused me to go back to the original vehicle and take out the front interior light fitting. There was a cross member which gives support to the roof. I found at 2000 revs this was the vibration and so rammed some small wooden wedges in there and that has eliminated my rattle.

Good luck.

Diesel particulate filters have been known to rattle/resonate at certain times in their operation. :shrug:

Rover 75's don't have DPFs.

I will have a look at that, the rev range is about right. I think it might be a bit lower down, at the moment I am thinking brake heat shield.

I had suspected first that rear exhaust shield, then forward shields, then engine bay, and never suspected that the noise was emanating from above my head.

Worth a look.

My car had a similar issue there was a vibrating noise at 1850 - 2000 rpm turned out to be the hydramount on the engine. changed that and it went away. Now have another vibration developing I would suggest that could be the gearbox mouth as it's seems to be coming from that area of the car.

It won't be that then! :duh:

Have you checked the backplates on the brake discs?

springs
 

have a look at both rear calipers and check if the anti rattle springs are still there, i lost one and Jeeeeez it rattled to death only i motion, sounded like something heavy was about to fall off lol.....but simple fix and only a couple of quid