Home > Technical (L322) > Resonance/groan when accelerating 2012 4.4 TDV8 |
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GraemeS Member Since: 06 Mar 2015 Location: Wagga area Posts: 2475 |
Check that the spacers separating the brake pipes in the vicinity of the master cylinder are keeping the pipes apart. One of mine's spacers had come unclipped allowing 2 pipes to vibrate against each other.
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20th Jun 2022 11:56am |
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JMC Member Since: 01 Feb 2009 Location: Aberdeen-Angus Posts: 755 |
Could be the beginning of the exhaust heat shield coming loose below the drivers feet. I'm getting this on my 2012 4.4 just now and it is between 1k - 1.5k revs. Just haven't had the urge to get underneath to resolve it yet! The older I get, the more I realise that people confuse wrinkles for wisdom |
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20th Jun 2022 12:23pm |
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JayGee Member Since: 27 Jul 2021 Location: London Posts: 3202 |
I get it as well. Only happens at just above idle revs ( I only hear it at low revs) Doesn't sound mechanical to me more like a valve or resonance on the intake. On my old Saab the turbo bypass valve was also known as a 'hooter' valve and made a similar noise. 2012 TDV8 Vogue (L322) |
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20th Jun 2022 1:16pm |
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KristoffL322 Member Since: 20 Jun 2022 Location: North West Posts: 27 |
A valve or resonance on the intake is exactly how it sounds to me, thats a better way of describing it than what I managed in my orginal post.
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20th Jun 2022 1:56pm |
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Umiar Member Since: 21 Jun 2022 Location: Cracow Posts: 11 |
I have exactly the same buzz noise when accelerating. Only at low revs. But it somehow is correlated with engine revs - and I can "feel" it in my right foot when pressing acceleration pedal |
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21st Jun 2022 8:44pm |
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KristoffL322 Member Since: 20 Jun 2022 Location: North West Posts: 27 |
Been out in the car again today, and it's definitely making the noise at 1,000rpm. It’s doing it fairly consistently. |
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24th Jun 2022 6:50pm |
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Umiar Member Since: 21 Jun 2022 Location: Cracow Posts: 11 |
Did you check high presssure fuel pump? Sometimes after changing fuel filter this pump catches air and buzz in certain rpm |
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25th Jun 2022 6:11am |
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JayGee Member Since: 27 Jul 2021 Location: London Posts: 3202 |
It’s not a buzzing sound on mine. 2012 TDV8 Vogue (L322) |
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25th Jun 2022 6:41am |
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Umiar Member Since: 21 Jun 2022 Location: Cracow Posts: 11 |
Here is mine
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4th Jul 2022 6:38am |
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JayGee Member Since: 27 Jul 2021 Location: London Posts: 3202 |
Doesn't sound like mine. I get a 'moan' noise just above 1krpm and then it goes as the revs go higher. 2012 TDV8 Vogue (L322) |
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4th Jul 2022 7:55am |
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Fox889 Member Since: 04 Jun 2019 Location: Bury St Edmunds. Suffolk Posts: 683 |
Sounds like the main fan to me……but as per norm, I’m probably wrong😳 2012 Orkney Grey Westminster 4.4TDV8 with Ivory interior.........nice!
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5th Jul 2022 6:18am |
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KristoffL322 Member Since: 20 Jun 2022 Location: North West Posts: 27 |
Thats how mine sounds too. I'll take a video of it later this week and post it up. |
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5th Jul 2022 9:06am |
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kevinp Member Since: 28 Sep 2019 Location: Telford Posts: 1206 |
Can you guys replicate the noise revving the engine with the car stationary? |
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5th Jul 2022 12:15pm |
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Umiar Member Since: 21 Jun 2022 Location: Cracow Posts: 11 |
I will try today.
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5th Jul 2022 1:01pm |
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