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Thread: A question about the Dual Mass Flywheel from a fed up Vec owner

  1. #1
    Regular Member Vecmaniac's Avatar
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    Unhappy A question about the Dual Mass Flywheel from a fed up Vec owner

    How long will I get away with leaving a noisy DMF? It's only making a bit of noise at the clutch bite point at the moment and only on tickover and in neutral.

    If it fails is it a catastrophic failure that can cause collateral damage elsewhere?

    It seems that every time someone on here posts about clutch noise everybody immediately points to the DMF. Could it be possible that my problem is thrust bearing related as the noise is only occurring at the clutch pedal point where the thrust bearing meets the pressure plate spring fingers?

    I really am starting to fall out with my Vec. I've had it two years and been through the following....
    New wheel bearing
    Two front springs
    Two front shocks
    A new alternator
    12 months later an £80 alternator repair
    an EGR valve
    11 months later another EGR valve
    Inlet manifold
    A new ignition key (the old one's tranmitter broke)
    now a possible DMF/Clutch problem!!

    it's enought to put me off Vauxhall for good!!

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    Regular Member m8internet's Avatar
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    It's over 3 years old, so the rate at which parts fail will accelerate
    However failures up to 60K miles are rare, but once you are above 80K miles the rate accelerates
    Equally, many are expensive and because there are more of them it can just feel like a money pit

    Overall that list of failed parts is quite short, I have seen much longer ones

    My car also a 05reg, just over 100K miles
    I too have had one wheel bearing, but also one small engine repair, one caliper, one suspension arm and bush, and one clutch issue
    Ironically, that is far less than my first Vectra B, and considerably less than my previous Mondeo Mk3

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    How long would a replacement DMF last, driven sensibly?
    Are there any SMF's available, and if they were, how would it alter the way the car drove?

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    The DMF basically helps dampen vibration between the engine and transmission. So as well as transmitting more vibrations to the car it will shorten the life of the gearbox if you fit a solid flywheel.
    My Vec C is starting to rattle a bit now and its got 79K on it so theres one figure. Otherwise it depends on if you do lots of motorway cruising you could get much higher where as lots of stop n start city drivin will not help.
    Reading some bumff earlier DMFs can wear prematurely by driving in to low a gear or leaving the car idle for extended periods i.e. warming the car up on a winter morning or leaving it run with the AC on in summer to keep it cool. Cant win really.

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    Full Member Big Sig's Avatar
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    As the DMF falls apart I believe bits can nacker your starter motor. SO, dmf,starter motor, clutch.....£1000???
    Now I need a turbo to keep up!

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    Regular Member Vecmaniac's Avatar
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    Quote Originally Posted by Big Sig View Post
    As the DMF falls apart I believe bits can nacker your starter motor. SO, dmf,starter motor, clutch.....£1000???


    Hells bells!!

    I had a 2.2 ls Vec 'b' for four years before I bought the Vec 'C'and never had a spot of bother with it. I had to put a couple of tyres on it and that was all.

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    Quote Originally Posted by Big Sig View Post
    As the DMF falls apart I believe bits can nacker your starter motor. SO, dmf,starter motor, clutch.....£1000???
    Don't forget that the primary function of the DMF is to protect the gearbox from low frequency vibrations.

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    The DMF on my vectra (1.9 cdti 150) has been rattling since I bought it. It had 100,000 miles on it then and it has done 20,000 miles since. It could have been rattling long before I purchased the car so its very hard to say how long a DMF lasts once you hear then initial noises.

    I have noticed however over the 20,000 miles that the car has become much less smooth to drive. Gears are harder to select, smooth gear changes are harder to achieve and it lurches slightly when pressing on and off the accelerator.

    I think my DMF is coming to the end of its life because the rattling noise is now present all of the time and getting much louder. Pity its such an expensive job and you know it will happen again.

    Just a thought....Im sure the recent snowy weather would kill DMF's with second gear starts for traction?

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    Full Member GazVXLINE170's Avatar
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    Quote Originally Posted by Gmc12 View Post
    The DMF on my vectra (1.9 cdti 150) has been rattling since I bought it. It had 100,000 miles on it then and it has done 20,000 miles since. It could have been rattling long before I purchased the car so its very hard to say how long a DMF lasts once you hear then initial noises.

    I have noticed however over the 20,000 miles that the car has become much less smooth to drive. Gears are harder to select, smooth gear changes are harder to achieve and it lurches slightly when pressing on and off the accelerator.

    I think my DMF is coming to the end of its life because the rattling noise is now present all of the time and getting much louder. Pity its such an expensive job and you know it will happen again.

    Just a thought....Im sure the recent snowy weather would kill DMF's with second gear starts for traction?
    Mine has been doing it for 3 years/64K+ and tbh if it goes it goes as I should of sorted it but... could go at anytime just hope not in the near future.

    Gazza4
    Insignia VX-Line Nav CDTI 170.

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    Regular Member monty2000's Avatar
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    i got my vecy c 1.9 cdti 150 last september with 101,000. by october & 103,00 i heard the DMF chattering. had a new one fitted ny the car dealer. 6,000 miles later its chattering again? is this possible? i always drive pretty sensible & never ride the clutch. what i am hearing is after reving in neutral (at low revs) is like a ratchet sort of sound after reving. is this the DMF?

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