Noisy C5
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Thread: Noisy C5

  1. #1
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    Default Noisy C5

    My C5 diesel is sounding like a bucket of bolts (for several months now). It's worst at idle and under low load. I have been told that the noise is "a worn drive pulley on the alternator. The pulley can't be replaced separately, you will have to buy a whole new alternator assemblyÖ". (A very costly job, needless to say.)
    Has anybody else experienced this problem?

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    Contented Peugeot Driver addo's Avatar
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    Are you sure it's not the crank pulley? They are a common fail item.

    Alternator pulleys are replaceable; go on Fleabay, look up Gold Lion auto electrical supplies in Eire and get in contact to describe the problem - they can probably offer an OEM equivalent service part delivered inside a fortnight.

    There are things like this: ALTERNATOR CLUTCH PULLEY CITROEN C6 2006- OAP7186 | eBay but cheaper, to be had.

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    It an easy thing to check. Poke a screwdriver into the alternator armature to lock it (with car stopped!) and see if the pulley can only be turned in the drive direction. Always replace a stuffed one, they don't outlast the car.

    INA (Germany) make them, and as Addo says, they are easily got overseas, ebay etc, if you can't find one here. Under the plastic cap they are splined inside and the easy way to get one off the shaft is a spline to hex device so you can use an impact tool . Again, try ebay.

    Youtube has examples.

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    Quote Originally Posted by Roger View Post
    My C5 diesel is sounding like a bucket of bolts (for several months now). It's worst at idle and under low load. I have been told that the noise is "a worn drive pulley on the alternator. The pulley can't be replaced separately, you will have to buy a whole new alternator assemblyÖ". (A very costly job, needless to say.)
    Has anybody else experienced this problem?

    Yep, same problem as mine and it's been like that for some time I'm ashamed to admit. I'm pretty certain mine is the alternator pulley fault as opposed to the crankshaft pulley since it's worse after a cold start when the battery has been loaded. Once warm (and battery approaching full charge?) the noise reduces to tolerable levels. I've been meaning to source a replacement pulley and this post will put the skids under me to do something before I regret avoiding the issue.

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    Good luck with that one ! I am after a replacement for a diesel 6 speed restyle C5 built in 2006. Earlier C5 diesels do not use the 150 watt alternator, so beware of buying from a wrecker. I tried to track down replacement one way pulleys using local sources a few months ago. Dayco list the things but I got no reply. The local ( OZ) Valeo importers only sell complete alternators. Citroen service site shows the pulley on the alternator as a grey area only .. so to a non trade coded user that is useless. I did however find a reference number on Citroen Service for the complete alternator. You could go shopping that way. The problem is not just buying the pulley but finding the keyed alike tool to remove and replace the clutched pulley to the alternator shaft. One Ebay seller in Ireland stated he was able to supply the tool too, but I chickened out. ( It would have been a > $200 risk ) There are many different tooth patterns for the clutch pulley extractor. Knowledge is power ! Please share the knowledge ! I was quoted > $900 for a complete alternator. Many alternators on Ebay ( and Ebay UK ) do not have one way pulleys so there are traps for young players there too.

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    Contented Peugeot Driver addo's Avatar
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    Have you tried the Polish mob, A-S? Old mate in Eire is the goods, he buys from them. I note he sells the 33 spline tool for about $10 plus post.

    Should I bring in some splined tools to resell?

    If you really get stuck for clutch ID, try posting a picture of the alternator label.

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    The info here may help for matching alternators with aftermarket pulleys - http://www.schaeffler.com/remotemedi..._077_en_en.pdf

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    Dayco have C5 pulleys and tool listed in their AU catalogue at http://m.dayco.com.au/databank/docum...--Dec-2014.pdf. Repco are local dealers, maybe worth a shot?

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    seasink, Thanks for the Dayco reference. The other half of the puzzle is to find someone locally with the installation tools. The RACQ were famously useless in my last investigation and couldn't recommend an auto electrician who might have Euro experience. My local man just plain didn't want to know. BTW the local Automatic transmission specialist doesn't even want to look at the C5 let alone change fluid. He has burnt his fingers on a Renault recently when he couldn't find a filler plug. ..... he tells me he resorted to refilling via the speedo sender hole.

    I am sure others will appreciate your assistance too.

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    Repco doesn't seem to be as good an option in Brisbane. Try Dayco: Where to Buy for some outlets.

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    The C5 HDi to around late 2001 only were designed to use an alternator with a fixed pulley. It has a 3-piece crankshaft damper to compensate. Later HDis use the one-way pulley. sometimes called an overrunning pulley too.

    It will most likely be made by INA and you can read the reference number from the front face. Something like INA F-123456.

    They are not all the same, but this may be a start:
    Alternator Pulley FOR Citroen Peugeot Fiat Lancia 2 0HDI 2 2HDI F 229603 | eBay

    Tools look like this: https://www.fcpeuro.com/products/alt...ool-kit-4641-2
    FCPEuro also list INA pulleys if you want to check, but do not focus on PSA models.

    Regarding Fritzelhund's C5 ... the AM6 gearbox in your car is the same as fitted to some Fords (e.g. Mondeo) and Toyotas etc.. It's essentially the Japanese AW6 gearbox known by another name, although the actual configurations of the gearboxes vary between applications.

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    David, when this thread started I checked my own pulley. The outside face of the cap is blank. There might be a number inside, but I didn't remove it to see.

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    Remove the cap. Look at pictures of INA parts and you'll see where to look.

    The early 3 piece crank damper pulley were relatively costly so some cheapskates have fitted the later type damper and lived with the vibration, letting the aux belt tensioner take the beating at idle. The noise usually stops above idle.
    Last edited by David S; 19th May 2015 at 12:59 AM.

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