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  1. #1
    Reverse Gear

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    Oct 2009
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    Exclamation 1.9 Tdi. many many problems and need help

    hello ladies and gents, iv recently bought a shiny 1999 A4 1.9 Tdi. im gutted though as soon after all kinds of problems showed up and i need help with them all!! 1st. on acceleration the engine surges, dies and surges and dies and so on and man the amount of black smoke out the back when its doing this is incredible!! 2nd. iv really slow coolant leak which i cant find!! i need to top up about every 800miles..any suggestions? lastly(for now) the car fogs up really quickly if more then one person is in it and the blower on full can just barely keep the windscreen clear..is this normal?!!

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  3. #2
    6th Gear

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    Jul 2007
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    1st: i would check the fat pipes from intercooler to the turbocharger if they are split, 2nd: check tthe bottom corners of h radiattr for corosion, if no crusty deposits present, then it could be a leaky water pump, cyl.. head flange(check the seal) or even a craked head- if some smart ass topped up with cold fluid on a hot engine ! 3rd: see if the aircon works by pressing the snowflake button on the climate control panel...

  4. #3
    fjtwelve's Avatar
    Moderator

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    Jan 2006
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    Falmouth, Cornwall
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    765
    Black smoke - check the N75 boost control valve
    Your aircon may need to be re-gassed. If the previous owners didn't run it very often the rubbers may be perishing slowly and leaking.Steamed up windows and coolant leak? Any connection there in the heater system?
    2001 A6 Avant 2.5TDi quattro Sport 180hp+TurboDynamics MD438 hybrid+Bosio Race683s+3" exhaust+Celtic Tuning remap - now with adamss24 replaced with runabout
    2007 BMW 535d AM Sport + Celtic remap
    2004 A4 Avant 1.9TDi quattro Sport 130hp + Superchip - sold & replaced by
    2005 Audi TT 1.8T
    1988 Yamaha FJ1200 120hp finally traded after 23 years for
    1986 Yamaha FJ100 (1300 barrels shhh!) with too many bits to mention
    2011 BMW 320d M Sport son #1
    2004 Suzuki SV650 S son #2

  5. #4
    1st Gear

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    Jan 2003
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    Milton Keynes UK
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    248
    For the steamed up windows -
    Check under the battery for water, if present then the drain is blocked with leaves etc...

    The air intake for the interior of the car is next to the battery so it could be sucking some in?

    remove the battery and clear the blockage.

    Jim.

 

 

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