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Technical (156)
 Alfa Romeo forum : Technical (156)
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Ex-Fiat
Junior Alfisti
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Posted: 04†December†2009 at 17:36 | IP Logged Quote Ex-Fiat

My Alfa 156 Jts is keeping strange noise, my mechanic told its something in the aux.

Here is the sample:
http://www.youtube.com/watch?v=ANsidHVca3E


The power steering pump has been changed(no help), next I will change the alternator , but looks like hell oh a job.

All belt related has been changed resently.


If someone has had same noise let me know, thanks.



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JON156VELOCE
Junior Alfisti
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Posted: 04†December†2009 at 23:19 | IP Logged Quote JON156VELOCE

Does soundlike a belt noise.
Take the aux belt off and run it, if the noise goes then its something driven by that, tensioner etc, if the noise is still there with the aux belt off then stop driving it and reving it as it is something not righ with the timing belt.
Were the belts changed in a proper garage or did you do them..?
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Junior Alfisti
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Posted: 05†December†2009 at 12:31 | IP Logged Quote Ex-Fiat

Belts were changed by a professional mechanic.

I'm guessing it's the alternator but just wanted someone to give me the second opinion, before doing anything.

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Will_P
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Posted: 05†December†2009 at 12:45 | IP Logged Quote Will_P

My v6 has just (over the last few days) developed the same noise. Belts etc were done just over 2 years ago (12k miles). If the weather clears up a bit, I'm going to attempt to partially remove the auxiliary belt and see if the whine clears.

Fingers crossed itís just the alternator!


Edited by Will_P on 05†December†2009 at 12:46


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Junior Alfisti
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Posted: 05†December†2009 at 14:24 | IP Logged Quote Ex-Fiat

Let me know what was it


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Chris T
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Posted: 05†December†2009 at 23:47 | IP Logged Quote Chris T

Lazy link

It does sound like an aux belt to me.

I don't think the cam belts would make such a wine all of a sudden.

Edited by Chris T on 05†December†2009 at 23:47


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Will_P
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Posted: 07†December†2009 at 15:19 | IP Logged Quote Will_P

After a play with the car on a pit and a listening stick (long screwdriver) the noise appears to be coming from the bottom fixed tensioner pulley on the auxilary belt. On the v6 it's the smaller of the two fixed pullies and sits forward of the crank pulley.
I've got one on order so once it's fitted, I'll let you know if that solves it. I had a bit of trouble accessing the adjustable tensioner so there's a small chance it could be that, but as it's not that old and fairly well protected from the recent flood water, it shouldn't be that. The alternator, power steering pump and ac compressor all sounded fine btw.

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Junior Alfisti
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Posted: 07†December†2009 at 15:55 | IP Logged Quote Ex-Fiat

Thanks for the info.

I'm going to buy somekind of stethoscope and do the same.


Hope you can sort it out soon.

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Posted: 07†December†2009 at 20:10 | IP Logged Quote Will_P

I just used a long screwdriver, but a length of metal or even wood will work. With the engine running (very, very carefully) place one end on the component (on an alternator place on the body, for a pulley, use the centre bolt) and bring your ear up to the other, it's amazing what you can hear.

The method was show to me when I wanted to see if the injectors were causing a misfire.

Its worth trying before shelling out some of your hard earned!

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Posted: 11†December†2009 at 18:32 | IP Logged Quote Will_P

Just to update: £40 and about 10 mins later, my car sounds less like a Wookie and more how a v6 should.

It was the front fixed tensioner (a cheap and easy fix). Good luck with your problem, let me know when you solve it!

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Posted: 27†December†2009 at 13:59 | IP Logged Quote Ex-Fiat

I think its the aux belt idler. Does somebody know the part number? I mean the black plastic wheel upwards from the crack pulley.

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Smaky
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Posted: 27†December†2009 at 18:23 | IP Logged Quote Smaky

60602136 Idler

46479457 center cover

55184055 Tensioner

71732372 Aux belt (JTS)

If your replacing 1 part the I replace them all, the cover is only there for if yours is missing, it protects the idlers bearing from the weather and thus corrosion.
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