S40 1.8 - Vibrating/Rubbing Noise at High RPM, and More…

F55MCS · May 9th, 2021, 14:35

Having a problem with a strange noise (well, 2 noises actually) on my 1.8 S40. At high rpms, say above 5000, there is a weird intermittent vibrating or rubbing noise. Seems to be more noticeable in 1st and 2nd but that could just be because wind noise takes over. Sounds like it’s coming from low down I think. Could this be a gearbox mount perhaps? The (UK) drivers side engine mount is beginning to split so I need to replace that anyway, but it doesn’t sound like it’s coming from that one.

The other noise I have no clue about. It only happens on one road near me, a sharp left hand bend on a very steep hill with a very bumpy surface. It basically sounds like something flapping about coming from the drivers side front wheel area or thereabouts, not like any suspension knock I’ve ever heard though. I can’t see anything obviously wrong down there, it’s really got me stumped.

Any ideas?

JohnM 855 T5R · May 9th, 2021, 15:59

First place I always look with noises/vibrations of this nature is CV joints.

John

May 9th, 2021, 14:35	#1
F55MCS New Member Last Online: Nov 19th, 2023 17:14 Join Date: Nov 2018 Location: Somerset	S40 1.8 - Vibrating/Rubbing Noise at High RPM, and More… Having a problem with a strange noise (well, 2 noises actually) on my 1.8 S40. At high rpms, say above 5000, there is a weird intermittent vibrating or rubbing noise. Seems to be more noticeable in 1st and 2nd but that could just be because wind noise takes over. Sounds like it’s coming from low down I think. Could this be a gearbox mount perhaps? The (UK) drivers side engine mount is beginning to split so I need to replace that anyway, but it doesn’t sound like it’s coming from that one. The other noise I have no clue about. It only happens on one road near me, a sharp left hand bend on a very steep hill with a very bumpy surface. It basically sounds like something flapping about coming from the drivers side front wheel area or thereabouts, not like any suspension knock I’ve ever heard though. I can’t see anything obviously wrong down there, it’s really got me stumped. Any ideas?

May 9th, 2021, 15:59	#2
JohnM 855 T5R VOC Member Last Online: Jan 20th, 2023 10:58 Join Date: Sep 2020 Location: Tittensor	First place I always look with noises/vibrations of this nature is CV joints. John __________________ Past : 96 855 T5 CD ruby red, 98 C70GT T5 coupe Saffron, 04 C70GT T5 convertible Navy Present : 95 855 T5R Gul Yellow 08 C30SE Lux T5 Polestar 11 C70 Solstice T5 Polestar 19 XC40 T5 R-Design Polestar

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