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Airlock and over heating

Discussion in '(Archived) Ask for help with your car and FAQs' started by Tom d, May 5, 2018.

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  1. Tom d

    Tom d Active Member

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    Hi Guys,

    Urgent help needed. I gave an ibiza fr tdi 2005.

    Before Christmas previous owneri had waterpump and cambelt changed, the garage did not bleed correctly and over heated. Managed to get this sorted and has been driving ok since.

    Recently started over heating amd radiator fan stopped working.
    I have changed full radiator yesterday
    And managed to get fans working but cannot get water flowing round the system. Both top and bottom hoses are hot so very confused.

    Tried bleeding from coolant sensor, idle with cap open, driven with cap
    Open. Only thinng happens is pressure in water bottle builds up and bubbles over overflowing leaving 0 water in making the process start from beggining.

    Any Tricks
    Please help
     
  2. cheshire cat

    cheshire cat Full Member

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    maybe the over heating has damaged the stat
     
  3. Tom d

    Tom d Active Member

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    Heyup sorryfor late reply i work nights. The car currently has no stat in ? The airlock keeps causing back pressure in the syatem causing water to come to boil out of the tank. On a separate side there ia alap no fewe back from the water. Pump. This is stramge as this had a pump n belt in December
     
  4. cheshire cat

    cheshire cat Full Member

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    "hey-up"--- you must be local :) this may seem counter intuitive but I would put in a new stat and go from there the other reason for "boiling" is loss of pressure ie; leak --may be the cap seal
     
  5. Tom d

    Tom d Active Member

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    Sounds pike were local :).

    Ive tried all sort d and i seems to be over pressurising. I cant see it but either faulty waterpump or head gasket. Tried all sorts with it. Been told one of the easiest engines to bleed.
    Basically what happens in the expansion bottle there is no feed back on the top hose. Means when driving the pressure backs up and xhucks all the coolant out everywhere. Thats why at first i thought it was a massive air lock, sometimes the water glows and you get a small trickle from the top ofbthe tank them stops. The car fowa not over heat until
    The water boils up the bottle if that makes sense.

    Any help really appreciated
    Driving me mad.
     
  6. Tom d

    Tom d Active Member

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    Also i have tried all sorts:

    New radiator
    Expansion bottle and cap
    Waterpump and timing belt kit november 2017
    Fan relays
    Heater matrix blown out.

    Also not sure exactly what thI flow back should bbe like with the 1,9 tdi fr.
     
  7. cheshire cat

    cheshire cat Full Member

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    i guess a pressure test is the next step, at least it would rule out a head gasket problem
     
  8. Tom d

    Tom d Active Member

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    Heyup having this done tomorrow. Had a guy do aomethcwlles aniff teat done amd it ahowed as clear. This car ia very confusing.
     

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