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Thread: Engine rumble

  1. #1
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    Engine rumble

    Hi All,
    I have a 2008 RRS 2.7 TDV6 116,000km which has a noise from the engine. I'm a qualified mechanic and have had a good look and listen(even bought a new stethoscope).Engine has good oil pressure.The noise is consistent with engine RPM, does not increase under power and seems to disappear at higher RPM although it may be the rest of the engine /fan noise tending to taking over. Using the scope the noise appears to come from the front of the block area but difficult to pinpoint. I've had the timing belt covers off and checked valve timing etc. The belts and tensioner /guide pulley's were replaced at 100000 km.I also suspected maybe a torque converter issue however no change to noise under stall test conditions.I know some early versions of these engines had bottom end issues. I suspect excessive main bearing wear/clearance but in one instance while waiting at the traffic lights the noise completely disappeared for about 10 seconds and that doesn't happen with worn bearings.It starts, runs and drives fine.It is not a tappet or top end rattle but more of a deep rumble. Any help would be appreciated.
    Thank you.

  2. #2
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    Belt tensioner or idler pulley, water pump ?
    MY08 TDV6 SE D3- permagrin ooh yeah
    2004 Jayco Freedom tin tent
    1998 Triumph Daytona T595
    1974 VW Kombi bus
    1958 Holden FC special sedan

  3. #3
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    Quote Originally Posted by loanrangie View Post
    Belt tensioner or idler pulley, water pump ?
    Thanks Loanrangie,All three were replaced at 16,000km ago. I've checked them again and they are fine. I'm thinking I may have an engine replacement coming up.

  4. #4
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    Any fuel pressure or injector irregularities? Live values for the injectors might give a clue.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

  5. #5
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    If you caught it before it went bang surely you can just replace faulty bits? I see Turner Engineering in Uk sells bearings rods pistons etc

  6. #6
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  7. #7
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    Quote Originally Posted by Graeme View Post
    Any fuel pressure or injector irregularities? Live values for the injectors might give a clue.
    Thank you Graeme,
    Excellent idea!
    Ill check them checked out.

  8. #8
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    Quote Originally Posted by Meccles View Post
    If you caught it before it went bang surely you can just replace faulty bits? I see Turner Engineering in Uk sells bearings rods pistons etc
    Thank you Meccles
    Going to check fuel /injector pressures first,thanks to Graemes advice.
    I can get hold of low km Territory engine for $2500 if I need it which is probably cheaper than rebuilding existing unit.

  9. #9
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    How did you go with this one?

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