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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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Volvo V70 strange noiseViews : 1107 Replies : 16Users Viewing This Thread : |
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Jan 14th, 2019, 12:19 | #1 |
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Volvo V70 strange noise
Got a strange noise coming from my V70 2002 2.4 n/a - 133,000 miles
I made a video of it: https://youtu.be/q3W8V4-oP2o It seems to be coming from the under the drivers side of the car. It is also intermittent, usually starts a few mins after I drive away with a cold engine. But is sometimes there after a 30min drive. Also when I rev the car the noise doesn't seem to change, except when I let off the throttle it goes away for a few seconds and then comes back. Any ideas? |
Jan 14th, 2019, 12:59 | #2 |
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...do hate guessing wrong.
I've always heard there's a brake booster pump. It maintains pressure when the ABS system is active. Might that be it? Pull its fuse and see if the noise goes away. |
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Jan 14th, 2019, 16:01 | #3 | |
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Quote:
https://www.youtube.com/watch?v=2xzahn6Dh-o |
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Jan 14th, 2019, 18:18 | #4 |
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It is a strange sound.. if you undo the oil cap on the engine does it go away ?
Might have to do with the exhaust.. Have you inspected the timing belt ? https://www.youtube.com/watch?v=4zbkJYkLxCA
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Several Volvo Repair Videos https://www.youtube.com/playlist?lis...ECTts0FSVSOT_c |
Jan 14th, 2019, 19:25 | #5 | |
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I just tried this and no it doesn't.
But the noise definitely does go away when you let off the throttle when in neutral. Then usually comes back shortly afterwards. Quote:
The car had a new belt + tensioner fitted 15,000 miles ago. |
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Jan 15th, 2019, 01:30 | #6 |
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The test you performed is for the integrity of the diaphragm inside the power brake unit. I was referring to the pump which makes up the difference when brake fluid pressure is relieved by the ABS system opening the valve (so the wheel resumes spinning).
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Jan 15th, 2019, 09:31 | #7 | |
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Quote:
So do I just pull the ABS fuse to test this? |
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Jan 16th, 2019, 13:18 | #8 |
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I assume so. It has a motor in it so it "has" to be fused.
Remember, this is an educated (ah-hem) guess on my part. |
Jan 20th, 2019, 19:16 | #9 |
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Jan 21st, 2019, 14:53 | #10 |
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A VIDA can reset anything.
As to which fuse, if any, is involved, I'd assume all circuitry including ABS would be fused. Have you driven the car up on ramps and stuck your head down there to locate that noise? ...or open the bonnet whilst it's making this noise? Try focusing your hearing with an empty paper towel roll or some such. |
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