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Volvo s80 d5 2.4d - Unexpected Low-Speed Rumbling Hum from Air Filter: EGR, Valve, Timing?

Jabcok20 14184 14
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  • #1 16766600
    Jabcok20
    Level 18  
    Hello. As in the subject, I have a strange problem, the air filter is well sealed and twisted. More like a rumble, but only at low speed.
    The car is burning and has power, but this sound appeared suddenly.
    What comes to my mind is either a leaky EGR, the valve at the inlet (works evenly) or the timing changed.
    Dpf is rather ok because there are no errors in the computer.
    It remains to check the compression if it is equal and correct. Nothing else comes to mind. The intake flaps are new and the extinguishing flap works, i.e. it extinguishes the car on the computer test.
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  • #2 16768119
    Piasek80
    Level 31  
    SWIRL new but does it work? It's a Volvo - it's not enough to replace it.
  • #3 16768505
    Jabcok20
    Level 18  
    So what? Adaptation needed? I'm not sure if it works.
  • #4 16768516
    Piasek80
    Level 31  
    What did you diagnose?
    Vida or some universal?
  • #5 16768649
    Jabcok20
    Level 18  
    Launch x431
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  • #6 16768731
    Piasek80
    Level 31  
    Vida Dice.
    Universal ones do not fully embrace premium brands, especially flagship models.
    Are you far from Poznań?
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  • #7 16769030
    Jabcok20
    Level 18  
    Not without exaggeration. Easy and will look at the parameters of the swirl controller, whether the lever moves while driving or even when stationary.
    How n will work I will try cdif 3.
  • #8 16814422
    klimpit
    Level 1  
    Hello. And what about that rumble because I have the same problem.
  • #9 16815316
    Jabcok20
    Level 18  
    I don't know the client drives. So far, he is not doing anything with the car ...
  • #10 16909278
    aletomek76
    Level 2  
    Hi,

    did that humming explain?
    I have this exact problem
  • #11 17300361
    sirtrojan
    Level 11  
    the hum is from the fallen pushrods - part of the compression is pounding in the intake - especially audible at the left wheel.
    to replace the pushrods and levers. For days I will do it at home, I will write what and how.
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  • #12 17303561
    aletomek76
    Level 2  
    how did you come to this? are you doing it in an authorized one? what the cost

    I noticed that since this problem appeared, the car burns more,
  • #13 17303643
    sirtrojan
    Level 11  
    is a popular failure in 163 HP the pushers fall and the more powerful 185 can break their seats.

    In general, the car drives, but it works louder and rumbles.

    The robot is disassembling the top, so injections (prepare new copper washers), hoses, etc., disassembling the covers, so there are 2 gaskets - the set is from PLN 155 and above.
    Then you have the rollers on top, so dismantle them (you can also cover the seals). Volvo pushers are also not cheap, but there are those that they put in from other engines - and everything works as it should, but for half the price!

    Here you have a link what and how to do - the problem is that in Russian :) https://www.drive2.ru/l/10231705/
  • #14 17337282
    aletomek76
    Level 2  
    have you made these pushrods and levers yet?
  • #15 17394709
    sirtrojan
    Level 11  
    No - I bought all the stuff but I guess I'll part with the car and give it to a new buyer. I fixed some other things - incl. I sealed the servo: the vacuums went up, it brakes better and the variable turbo geometry also stands up better.
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Topic summary

✨ The discussion revolves around a Volvo S80 D5 2.4D experiencing an unexpected low-speed rumbling hum, suspected to be related to the air filter, EGR valve, or timing issues. Users suggest checking the swirl controller and compression, with some mentioning the use of diagnostic tools like VIDA and Launch X431. A recurring theme is the potential failure of pushrods, which may cause increased noise and power loss. Several participants share their experiences with similar issues, discussing the costs and procedures for repairs, including replacing pushrods and levers, and the importance of using genuine or compatible parts.
Generated by the language model.

FAQ

TL;DR: On Volvo S80 D5 2.4D, a common 163‑HP failure is collapsed valve pushrods; gasket set starts ~PLN 155. “The car drives, but it works louder and rumbles.” [Elektroda, sirtrojan, post #17303643]

Why it matters: This FAQ helps owners diagnose a low‑speed intake rumble and decide when VIDA diagnostics and top‑end repair are needed.

Quick Facts

What usually causes the low‑speed rumbling at the air filter on a D5 2.4D?

Collapsed valve pushrods let combustion pressure pulse back into the intake. You hear a resonant rumble at idle and low RPM. One owner described it as “part of the compression is pounding in the intake,” especially noticeable near the left wheel. Addressing the valvetrain eliminates the intake booming. [Elektroda, sirtrojan, post #17300361]

Is this issue tied to certain D5 power ratings (163 vs 185 HP)?

Yes. Owners report dropped pushrods on the 163‑HP D5, while the 185‑HP version may crack or break pushrod seats. This makes the 185‑HP variant an edge case with potentially harsher damage. “In general, the car drives, but it works louder and rumbles,” which helps differentiate symptoms during checks. [Elektroda, sirtrojan, post #17303643]

Will the car still run if the pushrods have collapsed?

Yes, the engine usually starts and drives, but it sounds louder and exhibits a low‑speed intake rumble. Continued operation risks added wear because incorrect valve action disturbs combustion and intake flow. Plan prompt inspection before damage spreads to rocker components or seats. [Elektroda, sirtrojan, post #17303643]

Can this intake hum increase fuel consumption?

Owners have observed higher fuel use after the hum started. Faulty valvetrain dynamics can reduce volumetric efficiency and combustion quality, nudging consumption upward in daily driving. Treat the noise as both a diagnostic clue and a running‑cost warning. [Elektroda, aletomek76, post #17303561]

Where should I listen to confirm the symptom on the car?

Stand by the left front wheel arch at idle. The resonance and pulsing intake hum are clearest there on affected engines. This simple check helps separate intake booming from unrelated drivetrain or exhaust noises during initial triage. [Elektroda, sirtrojan, post #17300361]

What scan tool should I use to diagnose this on a Volvo S80?

Use Volvo VIDA/DiCE. Community feedback notes that universal scanners often miss brand‑specific parameters and tests on flagship models. VIDA provides the right live data, actuator checks, and service routines for an accurate intake/valvetrain assessment. [Elektroda, Piasek80, post #16768731]

Are new swirl flaps enough to fix the rumble?

No. Replacing swirl flaps alone is not sufficient if the underlying issue is in the valvetrain. Validate that the swirl mechanism actually operates and track its commanded vs. actual position before blaming it for the intake noise. [Elektroda, Piasek80, post #16768119]

How can I verify the swirl actuator is working?

Log swirl‑controller parameters and watch the lever move during idle and light revs. Use VIDA to view position feedback and perform an actuator test. If movement and feedback match commands, shift focus to valvetrain inspection for the rumble. [Elektroda, Jabcok20, post #16769030]

Do swirl flaps need adaptation after replacement on this car?

Start by confirming movement and feedback with diagnostics. The thread emphasizes checking live parameters and lever motion rather than performing an adaptation routine. If tests pass, look elsewhere for the cause, such as pushrods and rockers. [Elektroda, Jabcok20, post #16769030]

What parts are typically needed to repair collapsed pushrods?

Plan new pushrods and rocker levers, a top‑end gasket set (from ~PLN 155), and new copper injector washers. Many also refresh seals while the covers are off. Some owners source alternative pushrods from other engines to cut costs. [Elektroda, sirtrojan, post #17303643]

Is it safe to keep driving with the intake hum present?

It’s risky. The noise indicates combustion pulses reaching the intake. That abnormal pressure cycling can stress rockers, seats, and the intake path. Limit driving and schedule a top‑end inspection to prevent escalating damage. [Elektroda, sirtrojan, post #17300361]

How do I fix collapsed pushrods and levers (quick steps)?

  1. Remove injectors and lines; fit new copper washers for reassembly.
  2. Remove top covers; replace pushrods and rocker levers; refresh gasket set.
  3. Reassemble, torque to spec, and verify smooth idle with VIDA checks. [Elektroda, sirtrojan, post #17303643]

Does the DPF cause this rumble?

Unlikely in this scenario. An owner reported no DPF‑related errors, yet the intake hum persisted. That steers diagnosis toward valvetrain and intake dynamics rather than filtration or regeneration issues. [Elektroda, Jabcok20, post #16766600]

Can I diagnose with a Launch X431 instead of VIDA/DiCE?

You can read basics with an X431, but the community recommends VIDA/DiCE for Volvo‑specific parameters and tests. VIDA improves certainty when evaluating swirl operation and intake‑valvetrain interactions on S80 D5 engines. [Elektroda, Piasek80, post #16768731]
Generated by the language model.
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