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Thread: BKD down on power after timing belt change

  1. #1
    Join Date
    May 2020
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    BKD down on power after timing belt change

    Just fine the timing belt in my 2007 2.0tdi on Sunday. Itís now down on power a bit - feels like the turbo doesnít spoil properly till about 2700rpm, although it goes hard then. Pretty gutless up to 2000 whereas before itíd pull hard from about 1400. Its done 200km since, seemed normal yesterday (1st 100km), then lost power.

    Iíve double checked timing - itís still spot on (crank tool slips in and pins slide home nicely in both cams). It starts, idles and doesnít smoke same as before. Fuel economy seems about the same but too early to tell.

    I also change the coolant flange so had the air box out. Been thinking about a MAF sensor issue but unplugging it makes no difference - this indicates itís not at fault?

    What else could it be? Iíve double checked vac hoses. Could torsion values be out? Why would they be? Can you adjust these with ODB11?

    Thanks for any help

  2. #2
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    Thread Starter
    Sorted - it was the MAF sensor. Gave it a clean and all good

  3. #3
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    Quote Originally Posted by wedgetail84 View Post
    Sorted - it was the MAF sensor. Gave it a clean and all good
    Winning. Cant ask for a cheaper/easier fix than some MAF spray cleaner. I clean the MAF in my car every 12-18 months. Probably overkill but cant do any harm making sure its clean.
    2015 Mk7 GTI Performance
    2015 Audi SQ5 bi-turbo V6 TDI family hauler

  4. #4
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    Quote Originally Posted by Lucas_R View Post
    Winning. Cant ask for a cheaper/easier fix than some MAF spray cleaner. I clean the MAF in my car every 12-18 months. Probably overkill but cant do any harm making sure its clean.
    For sure, I had a lot of expensive scenarios running through my head! Not a bad idea giving it a clean every second service or something.

    Although, on the subject. I did find a crack in the resin. Whilst itís still running ok I wonít change it but might have another on standby. Has anyone found an issue like this before? And does the Bosch number f00c2g2055 cross to a VW number?

  5. #5
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    Bosch probably make the MAF for VW. Parts like these are not made by VW: NEW BOSCH F00C2G2055 INTERNAL SENSOR INSERT MASS AIR FLOW METER ON SALE | eBay
    2015 Mk7 GTI Performance
    2015 Audi SQ5 bi-turbo V6 TDI family hauler

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