squealing in engine bay

[brewski123]

Hi every1.
I have a slight squeal in the engine bay, i've replaced the Viscous fan bearing, replaced the belt tensioner assembly and don't know whats left to replace. It's only a slight bearing squeal noise now.
The squeal is only on for a small time while taking off & you can hear it slowly die down to nothing. The squeal was really load before i replaced the other 2 bearing.
cheers brewski123.

[biggin]

How about the belt. I guess you have checked the movement in the other pulleys while the belt was off?

[Keppmeister]

I have a manual discovery 2 and the spigot bearing makes a noise when the clutch takes up on take of at slow speeds. The exhaust manifold can make a noise like a belt slip squeal too if it's leaking.

[brewski123]

Yes checked all other pulleys while the belt was off, it is a new belt too, i even gave the back of the belt a bit of a sand paper rub, so it wasn't as shiny like a new one.
It is a 2001 D2 TD5 Auto.
cheers brewski123

[biggin]

Could it be chirp from a failing front prop shaft uni? If so, you should check it as a matter of priority.

[bblaze]

exhaust manifold gasket/broken stud?
cheers
blaze

[alien]

If it's non-ACE there is a idler pulley located under the air conditioner pump that played up on mine.
I've also seen a belt change stop the squeal, not sure on what brand was the better one though.

As mentioned make sure you check the front tailshaft universals.
Particularly the ones of the Cardin joint, worse case is they let go and take out the transmission housing.

Blaze mentioned the exhaust which can have a similar sound.
Usually the nuts at either end of the manifold come loose or the studs break.
If it's leaking there should be a small black soot trail between the manifold and the head.

[rangieman]

If it's non-ACE there is a idler pulley located under the air conditioner pump that played up on mine.
I've also seen a belt change stop the squeal, not sure on what brand was the better one though.

As mentioned make sure you check the front tailshaft universals.
Particularly the ones of the Cardin joint, worse case is they let go and take out the transmission housing.

Blaze mentioned the exhaust which can have a similar sound.
Usually the nuts at either end of the manifold come loose or the studs break.
If it's leaking there should be a small black soot trail between the manifold and the head.
Check your turbo hoses aswell [wink11]

[ballbag]

Prop shaft. Spray some lube in the unis. If noise disappears you know the culprit.

[BigJon]

I am voting with bblaze for the exhaust leak at the manifold option.

[Toppa]

Belt was the issue on mine. Of course i replaced every thing else first becsuse i was sure it was a bearing squeal. Orig belt was quite new also. Easy to check with a different belt.

[worane]

Have you checked to see if you still have a cat?[bighmmm]

[brewski123]

haha both cats are in the house, besides if the cats are near the rover when i start it up they take off.
It is a non ACE , so will check idler pulley under aircon. And will spray lube on the uni's. it does have bolts missing off the manifold so there is a whistling sound coming from that but it is definitely a bearing noise. I'm waiting on my new stainless exhaust manifold to arrive so i can fix the whistling noise. Hopefully i can come to you guys with an answer, cheer for all your help.
brewski123.

[twr7cx]

My money is on the leaking exhaust manifold - if you already know that your missing studs and therefore have issues it seems a waste of time to continue to look for another cause until this is resolved and ruled out. Not sure how much success you'll have with the stainless steel replacement manifold - from all previous reports they're not very long lasting but I hope that you have better luck.

[scarry]

I had an early D2 that did it from new,intermittently,usually just after starting when hot.

The stealers couldn't fix it.