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Thread: Out of coolant & ideas

  1. 26th February 2017, 09:41 AM #1
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    Out of coolant & ideas

    Hi all after rebuilding my son in laws v8 D2 top end it ran great for 5000 ks. Now it has developed a mystery coolant ptoblem. Driving along the temp guage suddenly climbs to high. If you pull over & stop for 5 mins it goes down to 3/4 high then drive off it comes back to normal. I just replaced the thermostat thinking that was the problem . Yesterday drove 20 ks after replacing thermostat & bleeding properly with no problems i thought it was solved. Now i get a call this morning its overheated again . Its had heads done new hoses new water pump new thermostat heater disconected and loop put in throttle body blankec off. Any ideas Im at the end of tether with this one I have spent almost $4 k of my own cash to help them out . The radiator looks good but that is the only thing not replaced.
    Mike
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  2. 26th February 2017, 09:54 AM #2
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    is it drinking coolant?
    Current Cars:
    2013 E3 Maloo, 350kw
    2008 RRS, TDV8
    1995 VS Clubsport

    Previous Cars:
    2008 ML63, V8
    2002 VY SS Ute, 300kw
    2002 Disco 2, LS1 conversion
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  3. 26th February 2017, 10:11 AM #3
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    Pedro_The_Swift
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    even now the rads are not a wholesale replacement item, there are a few getting replaced, but not many in the scheme of things,,
    however, if its the only think not checked---
    have you done a proper combustion gas check?
    4K is a lot for a nil result
    "How long since you've visited The Good Oil?"

    '93 V8 Rossi
    '97 to '07. sold.
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  4. 26th February 2017, 10:14 AM #4
    Roverlord off road spares
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    Your title says OUT OF COOLANT so is it coming out externally or disappearing internally?

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  5. 26th February 2017, 01:40 PM #5
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    Cant see any coolant dripping out none in the oil none in the exhaust. The only coolant it loses is when my son in law boils it. He said it was only a minute from homeso i kept driving with guage on red. I just dont understand how it can run perfectly then suddenly the temp goes up. Yeaterday I fitted the new thermostat I then filled the radiator through the top hose then the block through the pipe then the 3 piece hose then the expansion bottle. I bled a bit of air out & it drove 20 k all good no problems at all. Im starting to think its Possessed !!!! Arrrgghhh !
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  6. 26th February 2017, 02:38 PM #6
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    I know it is logical but have you checked the viscous fan.
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  7. 26th February 2017, 03:00 PM #7
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    Quote Originally Posted by rangieman View Post
    I know it is logical but have you checked the viscous fan.

    Fan or radiator is where my money is at
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  8. 26th February 2017, 03:23 PM #8
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    get an infrared thermometer, check both the bottom and top radiator hoses/
    Current Cars:
    2013 E3 Maloo, 350kw
    2008 RRS, TDV8
    1995 VS Clubsport

    Previous Cars:
    2008 ML63, V8
    2002 VY SS Ute, 300kw
    2002 Disco 2, LS1 conversion
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  9. 26th February 2017, 03:24 PM #9
    lyhoon94
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    Rangieman and LoanRanger, are you guys referring to the fan that switches on when it hits a certain temperature in the engine bay?
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  10. 26th February 2017, 03:42 PM #10
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    Quote Originally Posted by lyhoon94 View Post
    Rangieman and LoanRanger, are you guys referring to the fan that switches on when it hits a certain temperature in the engine bay?
    Im talking about the fan on the engine so no not a electric fan .
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