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Thread: Need Help diagnosing: Rough cold start, engine fans after engine off

  1. #1
    Junior Member
    Join Date
    Jun 2013
    Location
    Melbourne
    Daily
    Golf Mk5 Pirelli
    Name
    Joe
    Posts
    8

    Need Help diagnosing: Rough cold start, engine fans after engine off

    Hi Guys,

    Been a while since I have been on but hoping for some smart minds to help diagnose a problem I have been having with golf Mk5 Pirelli. For the last few months on colder mornings the car has been struggling to start. It can take anywhere between 5 to 10 attempts to start unless you sit on the gas for a while to keep the rev's higher. VCDS isnt spitting out any engine error codes and I am unsure if there is much more I can do before it needs to go the mechanic again.

    Once the engine has been warmed up you can comfortably turn off and then start the engine again first time smoothly. An aside as well is that the engine fans have been coming on very loudly after the engine turns off for about 3-5minutes. I know lots of people would say this is normal however this is new for this car and until a few months ago it would not have done this. My feeling is they are both connected and wondering if it is a coolant sensor/cold start valve or something of that nature.

    Any assistance or knowledge would be greatly appreciated.

    Here is a video of the rough starts too for reference.


  2. #2
    Member
    Join Date
    Oct 2016
    Location
    Melbourne
    Daily
    12' Audi S3 Black Ed
    Name
    Andre
    Posts
    32

    Could be electrical starter motor or battery? Best bet take it to mechanic vcds is not always the holy grail of diagnosing a fault


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