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Hard to start

Discussion in 'Audi S4/A4/A4 Cab (B8 Chassis)' started by bmullan, Aug 6, 2013.

  1. bmullan
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    bmullan New Member

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    [Aug 6, 2013]
    Have a 08 2.0tdi that is hard to start when its cold takes 10+ goes to start but starts ok when warm.
    any help with this?
    #1
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  3. NHN
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    NHN Retrofitter - Audi - VW - Skoda - Seat Site Sponsor VCDS Map User

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    [Aug 6, 2013]
    Welcome to the site.

    Coolant sensor maybe, does the temp gauge show any fluctuations when running?
    #2
  4. bmullan
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    bmullan New Member

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    [Aug 6, 2013]
    yep the temp gauge goes to the center.
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  5. NHN
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    [Aug 6, 2013]
    I don't think its the starter either as it would be worse when hot with heatsoak, what about battery, have you checked the readings in the morning before trying to start?
    #4
  6. Zafi
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    Zafi Active Member

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    [Aug 6, 2013]
    Could it be losing it's prime on the fuel system? I had a car that did that from time to time, was worse if parked facing up hill!

    A poorly sealed fuel filter can cause it, might be worth seeing if its tight enough or changing the filter?
    #5
  7. hollow
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    hollow Active Member

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    [Aug 7, 2013]
    it could well be the starter , i may need a software update as well. if the starter doesn't reach a certain rpm when turning over the car wont start .you can get the ecu software modified for this or you could just replace the starter motor .
    car starts easier when warm as it doesnt need to crank over as much to start .
    have you checked the battery ? maybe it has a cell going down. this would lower the cranking power when cold ,but would start easier when warm as the battery will have more charge .
    #6
  8. bmullan
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    bmullan New Member

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    [Aug 10, 2013]
    The car now shows ignition lock defective and will not start but leave it a shot time it will start with ignition lock defective still showing and clears in a few seconds.
    car booked in with the dealer for Monday.
    #7
  9. NHN
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    [Aug 12, 2013]
    Barrel or wiring defective then, swap out & go from there.
    #8

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