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  1. #1
    Basket case. Equinox's Avatar
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    Default Problem with my Mitsubishi 300GT.

    Okay, just got this car a month ago and it started doing this about a week after I bought it. Every one hundred miles or so, it overheats and I can't figure out why. I've replaced the waterpump, timing belt and many thermostats but it's still continuing to do this.

    I'm gonna take it to a mechanic Thursday but was wondering if anyone had any ideas or suggestions.

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  2. #2
    Member COYOT3_CBSclan's Avatar
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    You could pressure test your coolant system and find any leaks.
    It also could be your radiator cap.

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  3. #3
    Basket case. Equinox's Avatar
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    Quote Originally Posted by COYOT3_CBSclan View Post
    You could pressure test your coolant system and find any leaks.
    It also could be your radiator cap.
    Wow, it didn't even occur to me to do a pressure test on my coolant system. It's not the radiator cap for sure though. I'll do a pressure test tomorrow.

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  4. #4
    Moderator chewtoys's Avatar
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    Also, if you notice any performance issues with the 300GT, it's because of the fuel injectors. Just saying.

    Damn Mitsubishi has so many problems, I would never dare to buy one used.

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    Last edited by chewtoys; 09-24-2014 at 06:17 AM.

  5. #5
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    They have some very weak transmissions as well. Granny shift that thing, otherwise your synchros are gonna fry.

    Worst case if it's not any of the above problems, it's likely your head gasket is in rough shape. How hot is it getting? Are you getting enough oil pressure? If it's not getting too hot, it shouldn't be a major concern. (Mine gets up to 220 during the Summer)

    Quote Originally Posted by Digger View Post
    Damn Mitsubishi has so many problems, I would never dare to buy one used.
    I'm gonna get a 1987-1989 Mitsubishi Starion next Spring. Those motors can handle a lot of boost abuse. Won't matter when the 2JZ swap is complete.

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    Last edited by Icee; 09-24-2014 at 12:19 PM.

  6. #6
    Moderator chewtoys's Avatar
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    Quote Originally Posted by Icee View Post
    I'm gonna get a 1987-1989 Mitsubishi Starion next Spring. Those motors can handle a lot of boost abuse. Won't matter when the 2JZ swap is complete.
    In no way am I downing Mitsubishis, they're decent, just I wouldn't buy a used one without a full background and would get it checked out by my mechanic before I make the buy.

    People who own Mits where I live are shit tuners who blow the fucking head gasket and use form-a-gasket to quick fix just to sell it off and let it blow up on someone else, seen it tooo many times in the shop I worked at.

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  7. #7
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    Might have something to do with the fact that you just bought a car from a company that sells air conditioning

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  8. #8
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    Try water in the radiator, could be the most simply problem. Also is it throwing any kind of codes at you?(gauge warnings)

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  9. #9
    Oh Noez Batman ChelseaGrin's Avatar

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    Make sure there arent any leaks going from the water pump to the neck, also use a sheet of paper, hold it to the fan. If it sticks, BAD. If it blows away, GOOD.

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    Last edited by ChelseaGrin; 09-25-2014 at 10:34 AM.





  10. #10
    Moderator chewtoys's Avatar
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    Hit everything under the hood with a fucking hammer

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