My engine overheats, no hot air from defroster, water stays cool even after 20 min idling. it seems to be circulating and i put a new thermostat in. What could be the problem?

  • Welcome to Motor Vehicle Maintenance & Repair! What is the year/make/model/engine of the vehicle in question? This sounds like my '03 Civic LX. – Pᴀᴜʟsᴛᴇʀ2 Dec 21 '17 at 17:57
  • There are quite a few factors that could cause an inability to warm. But as Paulster2 has noted, it's difficult to give applicable advice without knowing the year/make/model/engine info. :) – kyle_engineer Dec 21 '17 at 18:14

Either your water pump is not working or your fhermosstate is installed backwords.

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