high revs and overheating

my 1996 2litre mazda 626 is overheating after driving for 5 mins.water leaking from overflow hose.internal heater blowing cold air.revs 2000 from starting-although can fluctuate while driving (1500-2000).no water loss from resevoir.heater hoses cold when engine hot.fan working fine. HELP!!!

Reply to
clare311
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Faulty thermostat. Easy and cheap to fix.

Pat

Reply to
pws

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