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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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strange electric noise from under the bonnetViews : 475 Replies : 6Users Viewing This Thread : |
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Sep 24th, 2017, 20:32 | #1 |
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Last Online: Dec 18th, 2023 12:59
Join Date: May 2015
Location: Abingdon
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strange electric noise from under the bonnet
when I unlocked the car (engine cold), it started making a noise like an electric fan under the bonnet. Front right, can't see anything. Just been out, having left it a few hours, and it sounds like a ticking noise now...
I know the alarm is in that corner, and I removed the fuse a few weeks back, as it was going off all the time. Could it be related? |
Sep 24th, 2017, 20:46 | #2 |
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Last Online: Apr 9th, 2024 19:03
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Location: Renfrewshire
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More than likely it is the brake vacuum pump running. Does it run for a few seconds then go off? If so, nothing to worry about.
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Sep 24th, 2017, 20:52 | #3 |
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Last Online: Dec 18th, 2023 12:59
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No it seems to be running for 5-10 minutes at least.
I tried putting the fuse back in for the alarm. That made the noise different, sort of louder at first, but then it seems to go away, but still ticking a bit. I've left the fuse in to see what happens... |
Sep 24th, 2017, 21:01 | #4 |
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Last Online: Apr 2nd, 2024 19:50
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Location: Wexford
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When the alarm siren goes it can make all sorts of peculiar noises seeming to come from the ecu box/ washer reservoir area. Even with the fuse removed the leaky battery can have enough charge to continue the noises.
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Sep 24th, 2017, 21:08 | #5 |
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Last Online: Apr 25th, 2019 14:15
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Location: Hamburg
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Mine did this for a while , it was the headlight wipers trying and failing to park themselves. Try pulling the appropriate fuse to see if the noise stops.
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Sep 24th, 2017, 22:43 | #6 |
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Last Online: Jul 26th, 2021 21:24
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Location: Coldnada
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May well be a melted alarm siren module. It still has a battery (or what's remaining) to power it. Stick an ear on the fender see.
The brake booster pump is low under the air filter assembly. Easy to spot if it's running. On front right side there is a small cooling fan inside a tube between the ECM black box and the p/s reservoir.
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Several Volvo Repair Videos https://www.youtube.com/playlist?lis...ECTts0FSVSOT_c Last edited by oragex; Sep 24th, 2017 at 22:46. |
Sep 26th, 2017, 14:34 | #7 |
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Last Online: Mar 22nd, 2024 03:42
Join Date: Nov 2011
Location: Yeovil
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Murvi,
have a look at this post and see if it helps https://www.volvoforums.org.uk/showt...ighlight=noise cheers Jools |
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