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C30 / S40 & V50 '04-'12 / C70 '06-'13 General Forum for the P1-platform C30 / S40 / V50 / C70 models |
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Engine "THUMP" at 1500 RPMViews : 1722 Replies : 13Users Viewing This Thread : |
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Apr 6th, 2014, 15:16 | #11 |
VOC Member
Last Online: Dec 21st, 2023 17:27
Join Date: Jan 2008
Location: Doncaster
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its not your automatic door locking when the speed of the car exceeds 7 km/h the doors and tailgate are locked automatically
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Apr 6th, 2014, 15:22 | #12 |
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Last Online: Apr 6th, 2014 18:48
Join Date: Apr 2014
Location: Newcastle upon Tyne
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I considered that but the noise is alot different to that, its definately from somewhere under the bonnet. I can also feel it ever so slightly through my accelerator pedal (that could however be my mind playing tricks)
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Apr 6th, 2014, 18:17 | #13 | |
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Last Online: Feb 26th, 2016 19:58
Join Date: Aug 2011
Location: Exmouth
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Quote:
What you are experiencing is the ABS self test. It is a fair clonk when the car reaches 12mph for the first time each and every time the car is started. This is meant to happen and is perfectly normal. As already mentioned it has nothing to do with rpm and as it is a speed triggered test. You can feel the clonk through the pedals. |
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clunk, engine, knock, s40, thump |
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