XDAndy
Member Since: 16 Jan 2018
Location: Gibraltar
Posts: 597
  
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| A ‘thwack’ from the front |
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This is strange.
I’ve started hearing a sort of sprung ‘thwack’ from somewhere in the front, about a minute or two after starting the car. Only been happening the last few weeks.
Sounds like from center console come passenger side, as if something under tension is suddenly being let go.
Doesn’t always happen, more not than does, and when it does it always catches me out so I’m not paying attention.
I’m thinking ventilation flaps, but I’ve tried playing with various buttons for screen, face, legs, temperature, aircon and recirculating and cannot ‘force it’ to happen.
Anyone got any ideas where else I could look?
Thanks
Andy
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 1st Feb 2019 10:13 am |
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Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1786
  
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Have you checked whether starter motor is loose as it could be the recoil of the starter gear 
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| 1st Feb 2019 10:43 am |
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Bodsy
Site Sponsor
Member Since: 06 Nov 2006
Location: In the Clubhouse
Posts: 21361
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Check if the Aux belt tensioner is sitting at a funny angle. It should be parallel to the engine block.
Sound travels to funny places!
Is it when you are hard steering right or left? Bodsys Brake Bible
D4/D3 Remote FBH heat kits
BAS Remaps/ EGR Blank
Transmission Flush
Software updates/enabling
Clock/ SNOTM /3Flash / 4x4Info /BT Update /Service Reset/Error Codes / Gearbox Reset
See It Here
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| 2nd Feb 2019 11:37 am |
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XDAndy
Member Since: 16 Jan 2018
Location: Gibraltar
Posts: 597
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Thanks guys.
Checked both and look ok.
It is definitely a plasticy ‘thwack’ s when the wing mirrors spring back if knocked out of place then retracted/extended.
Only happens the once after starting, usually a minute or two after, and perhaps then only one in ten times the car is started.
Was wondering about one of the ventilation system diverters was getting stuck somewhere during a position change, and was hoping that someone would be able to suggest a likely/common culprit, but that’s because I haven’t been able to reliably repro the isssue.
When I get the chance, will have a closer look.
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| 2nd Feb 2019 12:10 pm |
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Leon
Member Since: 26 Apr 2014
Location: Leamington Spa
Posts: 433
 
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Mine does the same.
It is definitely something to do with the ventilation system.
Think it senses that warm air is available so opens and sends it to the cabin?.
Doesn't do it when in manual mode.
If you turn the temp up in auto you get the noise then.
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| 2nd Feb 2019 1:44 pm |
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