All Things Mk5 > How to Guides / Troubleshooting

Strange ticking noise on '06 Gti. Only on idle

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raz469:
Hi guys, i hope you can give me some good news, but yesterday after work the car started making a ticking noise, but only on idle. Its not made this noise before, and i kinda hope it because of the car didnt run for 9 hours. It made the noise all the way home (~20miles) but when i parked up it stopped. I think its the circled item below as i could see it rattle, but thought someone here would know.
Has anyone heard of this ticking? Or know what the below item is?
Thanks in advance
R


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r5gtt:
Now that would be your auxiliary fan belt tensioner.

Get a 15mm long spanner on it and pull towards you to see if it is free as it contains a spring load for the belt.
Whilst stationery, rev the car gently with bonnet open or get someone to do that for you and have a listen for the noise as that shouldn't make a ticking noise.
That engine bay looks different to mine as the battery is located behind the headlight and mine is located at the rear where your header tank is  :confused:

raz469:
Thanks mate. Would sh*t have to come out to get it changed?:s


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r5gtt:
No mate, just the tensioner itself and the belt would need to be refitted of course  :happy2:

Scottymon:
You got some sort of racing battery fitted?

As above though, most likely AUX pulley, tensioner or ALT.

I replaced my alternator a few weeks ago for a second hand one from ebay £20 with pulley, spins fine and bearings good too, at that price mad to buy new; easy DIY. :happy2:

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