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Re: Mysterious knocking/rattle
Posted: Mon Aug 12, 2019 8:32 am
by kirsty_s2k
Botash1 wrote: āThu Aug 08, 2019 8:30 pm
I'm describing it as a creaking at low speed and it hasn't bothered me much until I read these posts. Otherwise the car is excellent. I'll have it checked then post again
In the last week I've noticed a creaking noise I think from the front right - makes creaky noises when manoeuvring out of the drive and when going over speed bumps - very odd as it's only on 20,000 miles and 1.25yrs.
I think I'll wait to see if it develops further before a trip to the dealer as I've found my first visit I usually get fobbed off until issues get worse!
Re: Mysterious knocking/rattle
Posted: Sat Aug 24, 2019 8:52 pm
by marobinson1977
Just bought a new T3 Inscription. It rattles louder than a rattlesnake. Sounds like it's coming from the glovebox, dashboard area. Sometimes the A pillar too. Deeply annoying and spoiling an otherwise lovely motor.
Re: Mysterious knocking/rattle
Posted: Mon Sep 23, 2019 1:52 pm
by ambirad
Same issue here, received my new XC40 Momentum on Friday.
Immediately when driving / taking off at low speeds, 10mph+ - I hear this rattle noise.
Taking it in for a look, will update with the findings.
Re: Mysterious knocking/rattle
Posted: Tue Nov 19, 2019 4:46 pm
by RaulSM
Same noise/rattle here, but only on temperatures above 25 degrees Celsius. Dealer checked the car, but didn't find anything wrong. Did someone find the rattle?
Regards,
RSM.
Re: Mysterious knocking/rattle - FIXED !!!
Posted: Thu Jan 09, 2020 8:51 pm
by RaulSM
Warning: English is not my native language, so I will do my best to explain the origin and solution of the noise in the car.
After months of trial and error and taking the car to the dealer 3 times, I discovered that the noise is not coming from the back of the car as it seems, but from the front. To find out, I lubricated each rubber component of the front suspension one by one with a silicone based spray oil. When it was the turn to lubricate the upper suspension mount, the noise increased dramatically.
I waited until the silicone oil had dried, and applied a motorcycle chain lube and the noise finally disappeared. Now it's been 2 weeks totally free of noise.
I attach a photo where I indicate with a red arrow the points where the lubricant should be applied, which corresponds to the drainage of the upper suspension mount. I also indicate with green arrows where the entire visible rubber contour should be lubricated. It is important to use a motorcycle chain lubricant that is compatible with oring chains, so that the suspension rubber is not degraded. I used a Liqui Moly "KettenSpray" which is liquid when applied, so it can get in between the little spaces, but then it dries out. If someone thinks it's necessary, I can post a picture of the lubricant I used.
I will also let the dealer know the source of the problem so they can check it more thoroughly and determine if any suspension components need to be replaced or if lubrication is sufficient.
I hope this will help someone solve this problem, as it almost drove me crazy.
Regards,
RSM.
Re: Mysterious knocking/rattle
Posted: Thu Jan 09, 2020 8:54 pm
by RaulSM
I almost forgot, I also re-tightened the 3 nuts on the top suspension mount that you see in the picture above.
Re: Mysterious knocking/rattle
Posted: Thu Feb 13, 2020 8:49 am
by Pelat1
Hi all, I'm experiencing a sound issue with the t3 geartronic: it ticks and rattles under acceleration. The rattle appears when the RPM approach 2,000, in movement, I cannot hear it while revving in neutral. It's sound like a valve issue. The car is new, and the dealer told me that's the normal t3 engine sound...but I'm struggling to accept it...anyone experienced the same?
Re: Mysterious knocking/rattle - FIXED !!!
Posted: Thu Feb 13, 2020 11:36 am
by Dermottdog
RaulSM wrote: āThu Jan 09, 2020 8:51 pm
Warning: English is not my native language, so I will do my best to explain the origin and solution of the noise in the car.
After months of trial and error and taking the car to the dealer 3 times, I discovered that the noise is not coming from the back of the car as it seems, but from the front. To find out, I lubricated each rubber component of the front suspension one by one with a silicone based spray oil. When it was the turn to lubricate the upper suspension mount, the noise increased dramatically.
I waited until the silicone oil had dried, and applied a motorcycle chain lube and the noise finally disappeared. Now it's been 2 weeks totally free of noise.
I attach a photo where I indicate with a red arrow the points where the lubricant should be applied, which corresponds to the drainage of the upper suspension mount. I also indicate with green arrows where the entire visible rubber contour should be lubricated. It is important to use a motorcycle chain lubricant that is compatible with oring chains, so that the suspension rubber is not degraded. I used a Liqui Moly "KettenSpray" which is liquid when applied, so it can get in between the little spaces, but then it dries out. If someone thinks it's necessary, I can post a picture of the lubricant I used.
Lube.jpg
I will also let the dealer know the source of the problem so they can check it more thoroughly and determine if any suspension components need to be replaced or if lubrication is sufficient.
I hope this will help someone solve this problem, as it almost drove me crazy.
Regards,
RSM.
I think this might be the cause of my noise. When the car is cold, no noise. After driving it for 10 miles, noise appears. If you rock the steering wheel it can be heard (Iām parked up when rocking). It could be the rubber mount flexing when warm??
Re: Mysterious knocking/rattle
Posted: Tue Oct 20, 2020 9:04 am
by stavakol
I have also similar noise at low speed from rear of the carny new XC40.
I Have bought my XC 40 two months ago and also noticed a Rattle or Knocking noise from the rear at low speed. Specially when going on bumps on the road It disappears at high speed or I cannot hear it.
I have removed any loose items from the rear but still the noise is there.
I have been to two separate dealers at three occasions and they have not been able to be certain where it comes from. One fixed it but it only lasted two days and came back. he thought it was from the rear cargo door lock.
it is either from the rear cargo door or the body of the car from the rear.
however still can be heard if you leave the rear cargo door open and drive very slowly intact it is lauder if the rear door is open. It seems comes from the body of the car frame from rear right hand side.
I think I have to live with it until Volvo figures it out where it come from.
It is good to know other people have the same problem too and is not just me.
I have an XC90 and V40 with no issues. I had previous Volvo cars, in fact we are Volvo family. This annoying noise is so uncharacteristic of Volvo
Re: Mysterious knocking/rattle
Posted: Tue Oct 20, 2020 9:10 am
by stavakol
I have had exactly same Knocking noise from the rear of my new xc40 at low speed too.