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BMW 3-Series (E90 E92) Forum
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Engine making this sound
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02-07-2015, 07:10 PM | #1 |
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Engine making this sound
My engine is making similar sound to this
When you lightly tap the throttle you can hear it Sometimes when you don't press the throttle even you can hear it Mostly hear when driving slowly with windows up and no outside noise Please help what can it be |
02-08-2015, 03:14 AM | #2 |
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Drives: F10 530d M Sport, E87 118d M
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Is it the high pitched whining noise you are concerned about?
I had a similar noise on mine which turned out to be the serpentine belt idler. As the care had done over 140,000 miles at the time I replaced the belt, idler and tensioner. It turned out that only the idler was shot. Could also be normal turbo whine?
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F10 530d M Sport, September 2012 Individual Amazonite Silver, Oyster Dakota Leather, Auto, Nav Pro, Bluetooth + USB Devices, Expanded BMW Online, Comfort Seats, Sunroof, Sun Protection Glass Individual Satin Walnut Honey Brown Trim Interior Inside/Outside Mirror with folding and autodip, M Rear Spoiler
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02-08-2015, 08:58 AM | #7 | |
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Does yours not make this sound, it's not as loud as video. Just when you opn bonnet and just blip throttle say 1/4 way pedal down you hear it like a chhhh air releasing sound. I though it may be wastage sound which is more notable with no dpf What's an obd type log? |
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02-09-2015, 06:28 PM | #11 |
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Drives: F10 530d M Sport, E87 118d M
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It will be the EGR pressure converter converter then. Check to see if the noise disappears when vacuum hose from EGR valve is clamped. Search the forum also for "duck" or "quack".
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02-10-2015, 04:18 AM | #13 |
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towards back of engine block at bottom of dipstick. i changed mine when manifold was off when i done glowplugs. its got 2 bolts attached to it. think i paid around £80 for euro but if its duck quack its your egr pressure converter
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02-10-2015, 04:43 AM | #14 | |
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As I had the quack noise on my X5 that suddenly appeared at point of purchase. The seller agreed to get it sorted under his BMW warranty, which he did. I took it to BMW and they sorted it by replacing the egr. The bill was around £500 but luckily was covered by the warranty!! |
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02-10-2015, 06:42 AM | #15 | |
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