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Cooling system problem HELP??

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  • #1

    Cooling system problem HELP??

    hey everyone

    so i have a 1998 Mk4 golf 1.6 GL, my first golf! and as of last week its been over heating for some apparent reason?

    yesterday i pulled the radiator out and all the hoses and cleaned them out, some grey mud like stuff fell out but didnt seem like it was enough to stop the flow and the coolant mix didnt have much oil in it to indicate it was the HG. so i put it all back together, i noticed the thermostat was extremely stiff and definitely needed to be replaced so i did that aswell but my engine is still over heating in no more than about 10 minutes...

    Any ideas???
    Tags: coolant issue, golf, golf 1.6, heating, mk4
  • #2
    Had the same thing with my old 1.6 blamed everything but it ended up being the waterpump impeller. when was the timing belt done? i'd put $10 on it's that. easiest way i checked mine was pull thermostat out and stick your finger in the hole (lol) and see if you can spin the impeller. if you can then it's come apart from the actual pump and isn't moving any water.

    Pic for reference: Mine when it came out. :l
    01 MKIV GTI ME7 converted hybrid k04
    08 MKV GTI Daily driver duties
    I have serious VAG issues.

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    • #3
      I don't know when the belts were last done but I have a feeling you're right with the water pump being the issue so I'll check it out, thanks heaps mate!


      Sent from my iPhone using Tapatalk

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      • #4
        yep... I used a repco one and it blew a bearing in no time. The second has been ok.

        If your heater isnt blowing hot, or lower pipes cooler then its likely not circulating as well.
        Last edited by blis; 29-03-2015, 02:11 PM.

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        • #5
          Pull thermostat out and stick your fingers in the hole . Can feel the water pump impellor that way.
          Volks Handy
          Servicing - Repairs - Diagnostics - Mobile fault scanning/clearing - A/c work
          10 years experience working for Audi/VW/Skoda
          Now in Perth NOR, Western Australia.

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          • #6
            Fixed!!


            cheers to everyone that suggested the water-pump! i pulled it apart and the impeller had slipped off and was very weak and as soon as i grabbed it, it would just crumble in my hand. plugged in the new much stronger pump and will hopefully last me quite some time
            Attached Files

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            • #7
              Originally posted by Brandt308 View Post

              cheers to everyone that suggested the water-pump! i pulled it apart and the impeller had slipped off and was very weak and as soon as i grabbed it, it would just crumble in my hand. plugged in the new much stronger pump and will hopefully last me quite some time
              Helps when you've been through the exact same thing! Glad you got it sorted mate.
              01 MKIV GTI ME7 converted hybrid k04
              08 MKV GTI Daily driver duties
              I have serious VAG issues.

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              • #8
                Good to hear.

                Should last you through to the next timing belt change.
                '07 Transporter 1.9 TDI
                '01 Beetle 2.0

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