Belt squeeling.

[paulvdw]

Hi All

I have just done 3800km from NSW to Tassie and back over 16 days. I have a GU 3.0ltr CRD. Around 5 days ago the belt started screaming at 2000 to 2500 rpm no squeeling above or below this range. Any ideas as to what causes this?

[MyGU8]

Belt tensioner...?

[the evil twin]

Worn belt
Belt tensioner
Alternator Sprag Clutch
A/C clutch

If you replace the belt use a genuine one as most aftermarket ones will squeal from new

[paulvdw]

Thanks Guys. Looks like a tension wheel bearing. The only one that has excessive play..

[happygu]

Unfortunately, it does rather sound like it could be an exhaust manifold leak, which is one thing the CRDs are prone for....

I just replaced my belt tensioner and mine would only squeal when cold, and would then go away ... I am not saying yours cant be different, as in some cases the manifold exhaust leak only happens when cold too.

PS: Doesnt hurt to have a spare tensioner anyway, as they are a known fail point

[threedogs]

You can replace the stuffed bearing with this one, NTN-WC 87503
general rule of thumb is use OE belts

[paulvdw]

Righto guys. Replaced tensioner and belt. Noise still there..😬. Will the exhaust manifold leak only make a noise at a certain RPM? The noise only occurs at around 2000 rpm then stops at 3000.

[Biskit]

You may find that you have a leaking intercooler. I had cleaned mine this arvo and as soon as I started the car to drive off, the high pitched squeal began between the rev range that you stated before... and no, the belts weren't squealing previously. Search on the other threads of how to fix this. Or repalce the intercooler with another (bigger, bettter, more expensive) unit!

[mudski]

Sounds to be a split egr pipe i reckon. Fairly common for this on the CRD's.

[growler2058]

Mine squeals for the first 30 seconds while accelerating then stops. Have replaced the belt and tensioner. If I stop for ten minutes and start up again it'll do it for 10 seconds before it stops


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[mudski]

Mine squeals for the first 30 seconds while accelerating then stops. Have replaced the belt and tensioner. If I stop for ten minutes and start up again it'll do it for 10 seconds before it stops


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Have a look at your egr pipe. If it does it while accelerating then stops, your motor is under load and high exhaust temps. As for the second part, when you stop the pipe cools, the metal shrinks and the split opens just that little more, then when it gets hot the metal expands, closing the split slightly.
Ive seen this before on a crd, but it could be something else too. Best thing to do is just make up a plate for the egr pipe on the exhaust side. So if the pipe is split it wont matter.

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[growler2058]

Have a look at your egr pipe. If it does it while accelerating then stops, your motor is under load and high exhaust temps. As for the second part, when you stop the pipe cools, the metal shrinks and the split opens just that little more, then when it gets hot the metal expands, closing the split slightly.
Ive seen this before on a crd, but it could be something else too. Best thing to do is just make up a plate for the egr pipe on the exhaust side. So if the pipe is split it wont matter.

Sent from my SM-P600 using Tapatalk

What are all the other pipes that run off from the inlet side. Will that matter if I block the bastard on the turbo side?


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[ova50]

Had a squeal on two different occasions.

The first time a couple of years back, it was the exhaust manifold gasket. (fortunately fixed under warranty) At the time I was told it is not uncommon. The dealer replaced the manifold studs in the head and also machine the manifold, which was recommended.

The second time I thought it was the same problem because it had a similar sound. This time it was the alternator pulley that was causing the noise.

[tracemul7]

Hey Folks - how much (roughly) for belt and tensioner replacement? 2006 GU 3.0TD Manual and Nissan have just quoted me $700 to replace both ..... am I being robbed blind, or is this reasonable?
Can still under extended warranty from purchase date, so sticking with original parts and Nissan fitting etc (where possible).

[the evil twin]

If you have extended warranty then the Tensioner is covered but the Belt isn't... I had two tensioners replaced for nix over 6 years
Get them to 'fix the squeal' and you should only pay for the belt

[tracemul7]

If you have extended warranty then the Tensioner is covered but the Belt isn't... I had two tensioners replaced for nix over 6 years
Get them to 'fix the squeal' and you should only pay for the belt

OMG you are an actual genius!

Just waiting for Nissan to confirm they will put it through under the warranty and get it done on Monday :D

It's really noisy on startup for a few mins (once warm, it's fine) .... am I risking any damage by driving it like this?

[tracemul7]

OMG you are an actual genius!

Just waiting for Nissan to confirm they will put it through under the warranty and get it done on Monday :D

It's really noisy on startup for a few mins (once warm, it's fine) .... am I risking any damage by driving it like this?

Nissan have confirmed it's covered 😀 just belt to pay for (around $100)!!

Haven't been on here for ages, but glad I popped back in!! 👍

[the evil twin]

Nissan have confirmed it's covered 😀 just belt to pay for (around $100)!!

Haven't been on here for ages, but glad I popped back in!! 👍

If you don't have a spare Serpy belt and they replace it, tell them you want the old one back.
Inspect the old belt and if it is 1/2 way decent keep it as a spare