91 ford explorer; smoke out the vents

my exp. is smoking out the vents. i noticed the water level down in the radiator as well. don't see where it is going though. i don't drive this vehicle much , usually just a few miles at a time so it hasn't overheated. noticed the fan speed only works on highest speed too. is there any connection here?

thanks ella

Reply to
ella
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You might have a broken heater core. Easy to fix.

Reply to
rakster

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