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  • FIRST POST
    • catoutthebag
    • By catoutthebag 12th Jul 17, 4:10 PM
    • 2,129Posts
    • 477Thanks
    catoutthebag
    Golf overheating issue, coolant & smoke
    • #1
    • 12th Jul 17, 4:10 PM
    Golf overheating issue, coolant & smoke 12th Jul 17 at 4:10 PM
    Ok long story short

    Earlier this year ecu light come. Couple things appear to relate to coolant, one being temperature sensor, which got sorted. Car blows cold air, temperature gauge in middle.

    Yesterday on a long journey, coolant light comes on. Check coolant and it was at minimum line so assumed sensitive sensor.

    I topped up with a bit of water, coolant light switched off.

    Drive a further 20 minutes, temperature gauge goes off the scale, coolant light on, smoke out the Bonnet.

    Advised not to open bonnet, car got towed to garage home 100 miles away.

    They said they had it running, can't find any leaks or issues.

    Any idea what it could be?

    The second time the car stalled, so lucky I wasn't on motorway etc! I travel all over an hour each way, so back on the road tomorrow.
Page 1
    • mrmot
    • By mrmot 12th Jul 17, 4:58 PM
    • 186 Posts
    • 130 Thanks
    mrmot
    • #2
    • 12th Jul 17, 4:58 PM
    • #2
    • 12th Jul 17, 4:58 PM
    Sounds like the water pump to me - no circulation, hence the cold air from the heater, getting hot at higher speeds, I should think that the plastic impeller is cracked/breaking up and is not getting driven properly by the pump shaft.

    Maybe time for a new pump and it would make sense to do the timing belt/pulleys and tensioner at the same time.
    • catoutthebag
    • By catoutthebag 12th Jul 17, 5:19 PM
    • 2,129 Posts
    • 477 Thanks
    catoutthebag
    • #3
    • 12th Jul 17, 5:19 PM
    • #3
    • 12th Jul 17, 5:19 PM
    Would the garage have spotted it? And I did notice coolant drop second time..but no leak...unless it escaped when I opened it still hot
    • Muscle750
    • By Muscle750 12th Jul 17, 6:10 PM
    • 833 Posts
    • 253 Thanks
    Muscle750
    • #4
    • 12th Jul 17, 6:10 PM
    • #4
    • 12th Jul 17, 6:10 PM
    Take oil filler cap off and check you aint got mayonaise looking stuff inside and on the oil filler cap. Could be a stuck thermostat as well.
    • Geoff1963
    • By Geoff1963 12th Jul 17, 6:14 PM
    • 586 Posts
    • 370 Thanks
    Geoff1963
    • #5
    • 12th Jul 17, 6:14 PM
    • #5
    • 12th Jul 17, 6:14 PM
    Could be a head gasket, so the exhaust pressurises the coolant and blows it out. After a run and left to cool, are the hoses hard, with a hiss when you remove the filler cap ?
    • catoutthebag
    • By catoutthebag 12th Jul 17, 6:27 PM
    • 2,129 Posts
    • 477 Thanks
    catoutthebag
    • #6
    • 12th Jul 17, 6:27 PM
    • #6
    • 12th Jul 17, 6:27 PM
    Oil filler cap?

    Didn't notice cream when I took off oil cap or hissing?

    And I know because the oil light came on an hour before this happened and I topped it up.
    • z1a
    • By z1a 12th Jul 17, 7:41 PM
    • 513 Posts
    • 396 Thanks
    z1a
    • #7
    • 12th Jul 17, 7:41 PM
    • #7
    • 12th Jul 17, 7:41 PM
    Oil filler cap?

    Didn't notice cream when I took off oil cap or hissing?

    And I know because the oil light came on an hour before this happened and I topped it up.
    Originally posted by catoutthebag
    Do you only top oil up when light comes on?
    • catoutthebag
    • By catoutthebag 12th Jul 17, 7:46 PM
    • 2,129 Posts
    • 477 Thanks
    catoutthebag
    • #8
    • 12th Jul 17, 7:46 PM
    • #8
    • 12th Jul 17, 7:46 PM
    Do you only top oil up when light comes on?
    Originally posted by z1a
    No, it was the first time it happened
    • catoutthebag
    • By catoutthebag 12th Jul 17, 7:47 PM
    • 2,129 Posts
    • 477 Thanks
    catoutthebag
    • #9
    • 12th Jul 17, 7:47 PM
    • #9
    • 12th Jul 17, 7:47 PM
    Could be a head gasket, so the exhaust pressurises the coolant and blows it out. After a run and left to cool, are the hoses hard, with a hiss when you remove the filler cap ?
    Originally posted by Geoff1963
    Head gasket blown would only happen if I continued to drive with the the temperature gauge to max, whereas I stopped?

    Car runs fine at the moment
    • Geoff1963
    • By Geoff1963 12th Jul 17, 7:56 PM
    • 586 Posts
    • 370 Thanks
    Geoff1963
    Head gasket blown
    Not blown, just leaking slowly.
    • GothicStirling
    • By GothicStirling 12th Jul 17, 8:32 PM
    • 920 Posts
    • 684 Thanks
    GothicStirling
    Not blown, just leaking slowly.
    Originally posted by Geoff1963
    Do NOT drive it, your engine will seize up. Get to a garage ASAP.
    • Strider590
    • By Strider590 12th Jul 17, 9:57 PM
    • 11,294 Posts
    • 6,276 Thanks
    Strider590
    Sounds to me like you left the cap loose when you topped it up.
    Having the last word isn't the same as being right.......

    "Never confuse education with intelligence"
    • House Martin
    • By House Martin 12th Jul 17, 11:58 PM
    • 209 Posts
    • 244 Thanks
    House Martin
    Do NOT drive it, your engine will seize up. Get to a garage ASAP.
    Originally posted by GothicStirling
    Mine never did, I had a leaking head gasket for over a year, losing water slowly into the engine but car ran fine (Vauxhall Cavalier ),Engine gave up eventually when it filled with water which spurted out of a spark plug hole when I removed it (and pushed car in gear ) .. I took the head off , new gasket , new oil and it continued to work fine for a few years..It was a mystery water leak which I never saw leaking from anywhere..I even went to Cornwall covering a thousand miles topping up the radiator lots of times..
    Another possibility is an air lock in the system
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