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Old 28-07-15, 02:16 AM   #1
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Default 207 gt engine noise please help

So I have just purchased a 207 gt. 1.6 hdi. I have owned the car 2 weeks and finally getting to grips with the fact I brought a dud. Just had to replace abs pump after traction control fault kept coming up and now I have a annoying engine noise. When it's cold you can hardly hear it. But when it's warm it makes this racket. Really stumped on what it could. Pl3aPlPlease help behttps://youtu.be/uEzsjC1N7AM
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Old 28-07-15, 02:18 AM   #2
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https://youtu.be/uEzsjC1N7AM
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Old 28-07-15, 03:00 AM   #3
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hi Arran1903
its quite hard to pin point the noise from the vid m8 but i can hear it .

Have you removed the aux belt to see if it goes away its defo in that area.
If it didnt go away then check the timing belt, for rubbing, guides and tensioner for roughness and also the water pump.

It also sounds like a failing altenator (bad diode) Have you checked its output, 13.8/14.2 volts. Also it may give you a good reading on the volt side but is producing to much ac ripple, this can cause havoc on electrics especially the abs module because the abs sensors if the variable reluctance type produce a sine wave (same as ac) and a failing alt can give false speed signals etc.

Again only going with what i heard m8 hope this has helped some Gd luck.
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Old 28-07-15, 03:05 AM   #4
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Hi how hard is it to remove the alternator belt? Also I shall do a bold test tomorrow. How would I do an a ripple test? Thanks for the reply
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Old 28-07-15, 11:42 AM   #5
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Just checked alternator voltage it's 14.5 volts is that too high car is a 110 bhp 1.6 hdi
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Old 28-07-15, 01:58 PM   #6
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hi, no i would say thats ok, if you disconnect the multi plug at the back of the alt the noise will go away (if its the alt)

As to testing ripple you relay need a scope with ac coupling to see the ripple, though sometimes it can cause the headlights etc to flicker

So try disconnecting the electrical multi plug from the rear of the alt, and start the car to see if noise is still there.
If so then belt's will req checking
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Old 28-07-15, 02:03 PM   #7
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Ok I shall try that later on. Also forgot to mention the noise only seems to be there when the engine warms up. Thanks for the help
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Old 31-07-15, 01:21 PM   #8
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Just took the car to a garage they diognosed it straight the it's the high pressure diesel pump. 500 for a new pump then 100 for cambelt and waterpump plus labour. Or get pump reconned for 100. May even buy a used pump and get that reconned so less labour and waiting.
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Old 31-07-15, 05:39 PM   #9
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Hi thanks for the update, that's poor luck tbh . on the upside you know what your problem is now.
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