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1990 suburu loyale no heat?

I have changed t stat and both sensors coolant goes into heater core hot but comes out cold? any ideas please help?

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  • 1 decade ago
    Favorite Answer

    Fuggy fuggy

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  • stevet
    Lv 4
    1 decade ago

    If coolant is hot going into the core and cold coming out than you have a cloged heater core. Both hoses should be hot to the touch. You may try flushing the core by disconnecting the heater hoses and using a garden hose and running water through both ways but be careful your cooling system is designed for no more pressure than what your radiator cap is listed at which is around 14-16 pounds, much lower than your house water psi.

    Source(s): ase tech
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  • 1 decade ago

    just take your own experiment

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