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Check your coolant level first. Post your findings.
AnswerHeather core could be blocked or bad thermostat.I have owned a 1990 for 7 years and my mom owns a 1992 (7 years too) and I just purchased a 1994 and every one of them have no heat. I gets warm in the winter but not hot.
I have changed the thermostat many times, flushed the rad, mom changed the heater core but we still have no heat.
I don't no if it's just the MPV or just our vans.
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