Question about 1997 Mitsubishi 3000GT

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Overheating mitsubishi gto

I have a mitsubishi gto 1994 twin turbo i have put new water pump on now i keep geting back presure and over heating the fans only come on when i switch ignition on but once to engine starts they cut out i have flushed the rad checked for blocked pipes the temp reaches half way and sits there for ages but the water just blows back fron the expansion tank i also put a new auto box on i dont think that is anything to do with it but just thought i would mention it thanks ****

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  • painmaster Jan 22, 2009

    alreadt flushed the rad and left cap off bubble up then starts to boil over fans not coming in

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Try to burp the system but u need to run the heater on full due to the heater core holding air same thig happen to me

Posted on Apr 01, 2010

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Thermostat, problem perhaps, dirty radiator, look if one of the houses from the radiator are inflated with pressure, when hot, if You notice that, Your thermostat is gone the other way to see that is after the car is hot, the coolant suppose to circulate inside, has to move, perhaps YO need to let the air out of Your system after replacing the w/p, run the engine with radiator cap OFF till no more air bobbles comes out

Posted on Jan 22, 2009

  • Cesar Bikic
    Cesar Bikic Jan 23, 2009

    The thermostat is not letting your therm switch turn the fan on, you have to locate the thermostat housing, it is the receiving part on the engine side of one of the radiator main hoses it looks like an igloo, but metallic usually attached to engine with two bolts 12 mm or 14mm, inside that metal igloo is the thermostat is bronze made and has a big spring, the way to check the thermostat after removing it is boil it in hot water and it spouse to open, install a new one (with gasket )(or O ring) if uses one and when filling system, let air bubbles out of radiator, f

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