Metallic Screech on full lock - Crank Pulley??

[Leo182]

Evening all.

Here goes. I am getting a like metallic like screech sound on full lock and for the first time today I heard the same type of noise when I started the the car up then it went virtually straight away.

It's a piercing noise that sounds bloody awful, I did notice the other month - not done it since that one of the pulleys stopped turning briefly so I am thinking maybe the crank pulley is knackered.

I've had all my belts done a few months a go using genuine parts.

Is there an easy way to check the crank pulley? pretty sure it's this after reading various threads on here.

Cheers.

 

[White16valver]

Evening all.

Here goes. I am getting a like metallic like screech sound on full lock and for the first time today I heard the same type of noise when I started the the car up then it went virtually straight away.

It's a piercing noise that sounds bloody awful, I did notice the other month - not done it since that one of the pulleys stopped turning briefly so I am thinking maybe the crank pulley is knackered.

I've had all my belts done a few months a go using genuine parts.

Is there an easy way to check the crank pulley? pretty sure it's this after reading various threads on here.

Cheers.

Screeching on full lock will be either PAS pump or the belt for it, I think.

If it does it on start up, it's likely just a damp belt until the moisture comes off of it. It might need tightening up but TBH I'd personally just leave it unless there was a mechanical issue caused by it.

 

[Leo182]

Screeching on full lock will be either PAS pump or the belt for it, I think.

If it does it on start up, it's likely just a damp belt until the moisture comes off of it. It might need tightening up but TBH I'd personally just leave it unless there was a mechanical issue caused by it.

Ok cheers White16valver.

It is very intermittent and like i say today was the first time i heard it on start up.

It is a weird one for sure!

 

[White16valver]

Ok cheers White16valver.

It is very intermittent and like i say today was the first time i heard it on start up.

It is a weird one for sure!

It's a French car.

We call it 'character' LOL

 

[Mbeau]

When belts were done was the aux belt tensioner replaced? I have had exactly the problem you described on two of the previous 172/182 I have purchased and both were partially seized aux belt tensioners, with the noise being exaggerated when on full lock.

I would have it looked at sooner rather than later, as if belt related then it could be fairly important. If one of the pulleys or tensioner is seized it can throw the belt through the cambelt and then its engine replacement time. I certainly would not advise leaving it! @Leo182

 

[Leo182]

When belts were done was the aux belt tensioner replaced? I have had exactly the problem you described on two of the previous 172/182 I have purchased and both were partially seized aux belt tensioners, with the noise being exaggerated when on full lock.

I would have it looked at sooner rather than later, as if belt related then it could be fairly important. If one of the pulleys or tensioner is seized it can throw the belt through the cambelt and then its engine replacement time. I certainly would not advise leaving it! @Leo182

Alrite Mbeau,

I don't think the tensioner was done tbh, I'd ask bloke but I guess he ain't around on here now! In the meantime, is it possible to check this myself?

I'll have to track down a new specialist in the North West!

 

[JamesBryan]

Alrite Mbeau,

I don't think the tensioner was done tbh, I'd ask bloke but I guess he ain't around on here now! In the meantime, is it possible to check this myself?

I'll have to track down a new specialist in the North West!

If Carl did it, he would have changed the lot unless you specifically asked him not to.

So it should be a new tensioner.

 

[Leo182]

If Carl did it, he would have changed the lot unless you specifically asked him not to.

So it should be a new tensioner.

Yeah just bought the belt kit and told Carl to change them, wasn't 100% If he did the tensioner.

 

[JamesBryan]

Yeah just bought the belt kit and told Carl to change them, wasn't 100% If he did the tensioner.

Do you remember which kit you bought, i'll be able to tell from the pics.

 

[Leo182]

Do you remember which kit you bought, i'll be able to tell from the pics.

No pics but found this in my emails, all from RPD.

1	7701477519	Renault Clio 172 182 Auxiliary Belt Kit	76.32
1	210107370R 172182	Renault Clio 172 182 Water Pump	37.37
1	130C12131R / 7700106271 / 7700274026	Renault Clio 172 182 Cam Belt Kit	91.37

 

[JamesBryan]

No pics but found this in my emails, all from RPD.

1	7701477519	Renault Clio 172 182 Auxiliary Belt Kit	76.32
1	210107370R 172182	Renault Clio 172 182 Water Pump	37.37
1	130C12131R / 7700106271 / 7700274026	Renault Clio 172 182 Cam Belt Kit	91.37

Yeah that is the kit including tensioner.

 

[Leo182]

Ok so narrowing it down now, ruling out the belts and tensioner will it most likely be the PAS pump or the belt like White16valver suggests?

It wouldn't be a CV joint or maybe a balljoint would it? only really happens when slow turning the wheel.

 

[Mbeau]

Ok so narrowing it down now, ruling out the belts and tensioner will it most likely be the PAS pump or the belt like White16valver suggests?

It wouldn't be a CV joint or maybe a balljoint would it? only really happens when slow turning the wheel.

You can't tighten the belt as suggested, it is self tensioning. If you get someone to turn the steering gently while the car is stationary have a look down where the aux belt is and see if there is anything obvious. The pump seizing can also cause a similar noise as the belt will be forced around the pulleys. Also have a look at the alternator pulley. It is making the noise when the steering is operated, due to there being more strain on the system.

When stationary with engine off see if there is any slack on the aux belt. The tensioners are absolutely useless. I have seen fairly new one seized up a bit. Check PAS fluid level too.

CV joint is unlikely to make the noise you described. Ball joints knock. Can you get a video of the noise? It's not easy to diagnose a problem from a description, so these are just possible things to look at. Hopefully that makes sense and helps.

 

[Leo182]

You can't tighten the belt as suggested, it is self tensioning. If you get someone to turn the steering gently while the car is stationary have a look down where the aux belt is and see if there is anything obvious. The pump seizing can also cause a similar noise as the belt will be forced around the pulleys. Also have a look at the alternator pulley. It is making the noise when the steering is operated, due to there being more strain on the system.

When stationary with engine off see if there is any slack on the aux belt. The tensioners are absolutely useless. I have seen fairly new one seized up a bit. Check PAS fluid level too.

CV joint is unlikely to make the noise you described. Ball joints knock. Can you get a video of the noise? It's not easy to diagnose a problem from a description, so these are just possible things to look at. Hopefully that makes sense and helps.

You can't tighten the belt as suggested, it is self tensioning. If you get someone to turn the steering gently while the car is stationary have a look down where the aux belt is and see if there is anything obvious. The pump seizing can also cause a similar noise as the belt will be forced around the pulleys. Also have a look at the alternator pulley. It is making the noise when the steering is operated, due to there being more strain on the system.

When stationary with engine off see if there is any slack on the aux belt. The tensioners are absolutely useless. I have seen fairly new one seized up a bit. Check PAS fluid level too.

CV joint is unlikely to make the noise you described. Ball joints knock. Can you get a video of the noise? It's not easy to diagnose a problem from a description, so these are just possible things to look at. Hopefully that makes sense and helps.

Great that Mbeau, thanks.

I will try and look at it tomorrow and see if i can record the sound it makes. I did get the Mrs to drive it very slowly whilst the bonnet was up but I never seen anything that looked out of place down near the belts - I did think the tensioner was maybe too close to the belt mind, maybe thats normal?

I'll try and grab some audio tomorrow.

 

[Leo182]

Ok, here goes, managed to grab some video and you can clearly see the belt stopping and starting.

This was constant when on full lock, it still did it when turning normally ie pulling off a kerb at a slight angle and I heard it when i turning the engine on straight away too - only a hint of it though there

It sounds bloody awful must admit

 

[Leo182]

Crank pulley theory??

Sounds a similar story to mine.

Aux belt slip, PAS squeal

Hi :) Car is a 172 mk2 with AC. Stock belt setup. I have used many threads on here to get to the point I am now so firstly, thank you to everyone who took the time to explain how the tensioner on the belt works, how to remove bits and where all the bolts are! It has been invaluable and the car...

cliosport.net

 

[JamesBryan]

That's not ideal 😳

Could well be the crank accessory pulley.

 

[Leo182]

That's not ideal 😳

Could well be the crank accessory pulley.

Yep my thoughts aswell seeing as Carl did all the belts etc a few months ago.

Is this a specialist job or can my local friendly Garage do it? not cheap are they @ £142 either

 

[JamesBryan]

Yep my thoughts aswell seeing as Carl did all the belts etc a few months ago.

Is this a specialist job or can my local friendly Garage do it? not cheap are they @ £142 either

The timing and everything would need locking off before you could remove that pulley.

I would suggest a specialist.

 

[M90SR]

Yep my thoughts aswell seeing as Carl did all the belts etc a few months ago.

Is this a specialist job or can my local friendly Garage do it? not cheap are they @ £142 either

https://www.autodoc.co.uk/ijs-group/7933730?search=IJS GROUP Belt Pulley, crankshaft (17-1033)

 

[Lee2525]

Ok so narrowing it down now, ruling out the belts and tensioner will it most likely be the PAS pump or the belt like White16valver suggests?

It wouldn't be a CV joint or maybe a balljoint would it? only really happens when slow turning the wheel.

Mine was doing this turned out was cv boot had come off

 

[MRBILLYUK]

Ok, here goes, managed to grab some video and you can clearly see the belt stopping and starting.

This was constant when on full lock, it still did it when turning normally ie pulling off a kerb at a slight angle and I heard it when i turning the engine on straight away too - only a hint of it though there

It sounds bloody awful must admit
View attachment 1457539

I had exactly the same noise 5 years ago , it turned out the water pump was knackered and on its way out.

 

[Mbeau]

I would be very surprised if it was the crank pulley. If you are able too I would be checking everything that runs off the aux belt first, starting with the tensioner just to rule it out.

Tensioner, waterpump(was this done with belt?) PAS pump, condenser for air con(does your air con work?), idler and the alternator(unlikely, but still check).

That video is exactly what two of mine did with seized tensioners. One was only partially seized too!

 

[Leo182]

I would be very surprised if it was the crank pulley. If you are able too I would be checking everything that runs off the aux belt first, starting with the tensioner just to rule it out.

Tensioner, waterpump(was this done with belt?) PAS pump, condenser for air con(does your air con work?), idler and the alternator(unlikely, but still check).

That video is exactly what two of mine did with seized tensioners. One was only partially seized too!

Waterpump was done with the belts and air con works fine. I am tempted to get the pulley changed still as I'm sure I read somewhere it should be changed when you have the belts done.

Gutted they are £140 though

 

[JamesBryan]

Waterpump was done with the belts and air con works fine. I am tempted to get the pulley changed still as I'm sure I read somewhere it should be changed when you have the belts done.

Gutted they are £140 though

You'd only normally change it if it was knackered.

Take it to Birchdown in Malpas and let them have a look.

 

[Leo182]

https://www.autodoc.co.uk/ijs-group/7933730?search=IJS GROUP Belt Pulley, crankshaft (17-1033)

Thanks mate, are they ok?? last more than 5 mins! normally buy genuine stuff.

 

[JamesBryan]

I'd get one of these if it turns out to be the pulley.

Damped Crank Pulley OE Equivalent

Standard replacement crankshaft damper pulley for all Clio 172/182 models. Crankshaft damper pulleys are no longer available from Renault so we have sourced this excellent quality replaceme

www.pure-motorsport.co.uk

 

[Leo182]

You'd only normally change it if it was knackered.

Take it to Birchdown in Malpas and let them have a look.

Got a funny feeling it is now!

If I was to whip the wheel off and liner would i be able to tell by looking at it? I'll definitely get it looked at properly just pushed for time to do it.

 

[JamesBryan]

Got a funny feeling it is now!

If I was to whip the wheel off and liner would i be able to tell by looking at it? I'll definitely get it looked at properly just pushed for time to do it.

Possibly.

You could jack it up and have someone turn the steering to full lock while you see what the pulley does...

 

[Leo182]

Possibly.

You could jack it up and have someone turn the steering to full lock while you see what the pulley does...

Ok thanks bud, will give that a go later will report back!

 

[JamesBryan]

Just looked more closely at the video and the belt doesn't stop, it's only the PAS pump pulley that stops for a split second

 

[MRBILLYUK]

Waterpump was done with the belts and air con works fine. I am tempted to get the pulley changed still as I'm sure I read somewhere it should be changed when you have the belts done.

Gutted they are £140 though

The last water pump I had done was fitted at a Renault dealership 5 years previously. It had only done 28k miles . The cheeky b******s had used a none genuine pump . It was rattling and screeching it's tits off.
I'm off to Birchdown next week for a few jobs. 3 hour round trip but at least I know they know what they're doing.
Another good garage is Mick @diamond motors. That's a 6 hour round trip , but again , worth travelling for.

 

[clio_ross]

When my crankshaft pulley was failing it would stall the PAS pump when putting load on the steering and I was also getting a similar noise to what you are in the video.

If you want confirm if it is the pulley, put a spot/line of paint or chalk across the inner and outer portion of the crank pulley on either side of the rubber.

run the car for a bit or until you hear the noise again and then have a look and see if the dots/line are still lined up; if they’ve moved apart then it’s the crank pulley.

 

[M90SR]

Thanks mate, are they ok?? last more than 5 mins! normally buy genuine stuff.

Yep would be fine.

 

[Leo182]

Do these pulleys look normal? should it have this amount of wobble? I was on my own so couldn't paint the line on.

 

[Short Norman]

My lads 250 meg made a similar noise and that was the steering ball joint

It was a horrific noise

 

[clio_ross]

@Leo182 that pulley looks in better condition than my one did, the rubber dampening material in mines was all cracked and the pulley itself was alot more grotty than yours is. But it would still be worth doing the line test just to rule it out.

Not sure about the wobble, doesn’t look too bad tbf, but hopefully someone else will be able to confirm if that degree of wobble is normal/acceptable.

 

[Leo182]

@clio_ross Yeah I thought it looked pretty decent really at first glance, expected to maybe see the rubber shot but looks in good nick I agree.

I'll track a specialist down although there isn't that many down my way in Manchester unless I get hold of Carl but bit reluctant! sorry Carl if your reading this, no offence.

 

[MRBILLYUK]

@clio_ross Yeah I thought it looked pretty decent really at first glance, expected to maybe see the rubber shot but looks in good nick I agree.

I'll track a specialist down although there isn't that many down my way in Manchester unless I get hold of Carl but bit reluctant! sorry Carl if your reading this, no offence.

Birchdown aren't that far away if you're in Manchester.
They're always busy so you might a couple of weeks to wait .

 

[Behemoth]

Mine was doing this. Same screech noise and you could see the PAS pump momentarily stopping with the noise. Noticed this after changing the lower crank pulley for the Pure Motorsports version and a new belt (money lost now).
It was still screeching and had to do an event where used lots of full lock, so in a kill or cure mood, just gave it loads of grief and thought it may just keep together (sounded not good on full lock and low revs). Towards the end of the day after much full lock and screeching it shut up!
It now been absolutely noiseless for four weeks now. I now believe it was a semi seized tensioner that has been hammered into working better at the moment.
It only was screeching at low/idle and lock, which is where the PAS pump is creating the highest load to turn and the screech is the belt slipping over the PAS pulley as it keeps “feeding” onto the PAS pulley.
If it returns I’ll be changing the belt and tensioner kit (current tensioner is two years old)