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Thread: Polo 6n2 non-start with starter motor, starts with bump start

  1. #1
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    Polo 6n2 non-start with starter motor, starts with bump start

    Hello everyone,

    I've posted before with a immobiliser issue but I've not discovered that it was no the case thus I wanted to make a new thread focused solely on the relevant issue.

    I've been having issues with my Polo 6n2 1.0L 2000 not starting. It would sometimes start on the 3rd/4th go or even on first attempt but that's rare. To go over the basics:
    Battery - quite strong, plenty of charge tested on other cars and starts them up no issue
    Starter motor - it's literary brand new
    Cranking - car cranks fast and strong

    I've checked grounding issues by running a cable directly from battery negative terminal to casing of the starter motor, checking VCDS does not show any error codes.
    What's interesting is that the car starts 100% of the time when being pump started, once you lift the clutch in second gear the car fires up straight away! Once the car has started it turns perfectly without any issues.

    Using the starter motor I tested for spark and it does not have any until you turn off the ignition. So as you turn the key to stop the starter motor you can see a small spark before cranking stops.

    Would I be right to assume that the issue might be caused by faulty ignition switch?

    Thank you.
    Last edited by John24; 09-12-18 at 13:29.
    2000 Polo 6N2 1.0, Petrol
    G/F: 2004 Polo 1.2, Petrol

  2. #2
    Administrator Crasher's Avatar
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    Sorry but that is a bad earth to the block, well the head, to me. It suggests a bad body to engine earth cable, I have been through this myself.
    2003 Skoda Octavia VRS Estate. APR 98RON remap, APR R1 diverter valve, Jetex exhaust, K&N panel filter, 7.5x18 Alutec Monstr wheels with 225/40 18 Uniroyal Rainsport 3 tyres.
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    1988 Golf 2 GTI 16 valve, 2.2 with Weber Alpha injection
    1983 Golf 1 GTI 8 valve, 2 litre with Eurospec racing 42/36 head
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  3. #3
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    Well after testing bad earth and finding nothing I bit the bullet and bought a new ignition switch. I unplugged the cable from the old into the new one and using screw driver turned it and the car fired up!!! tried it two more times and car starts every time.

    BUT my biggest problem now is how to get the old switch out? It looks like it was cast into the key barrel
    2000 Polo 6N2 1.0, Petrol
    G/F: 2004 Polo 1.2, Petrol

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    Administrator Keithuk's Avatar
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    2010 Golf GTD (170) CBBB, 5 Door, Shadow Blue (P6/D5Q), Transmission Code: KXZ, Flat Tyre Indicator, Basic Protection Pack + VCDS.


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  6. #5
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    Thank you Crasher and KeithUK for your help I found these 2 videos very helpful:





    2000 Polo 6N2 1.0, Petrol
    G/F: 2004 Polo 1.2, Petrol

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