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Old 25 Aug 2009, 12:31 pm
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Default 2004 Honda Civic - thermostat kept going to hot especially when idle but didn't seem to be

overheating? Garage couldn't figure out what was wrong but replace the thermostat. Seemed fine for about a week and started doing it again...now heat doesn't work either and when I do turn the heat on, the theremostat goes straight to hot and stays there and only cold air blows...what could all this be???? I'm frustrated
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Old 25 Aug 2009, 01:31 pm
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Garage couldn't figure out and took a guess















easy try typing into search box































how to check overheating car































gets you a list of things it might be and best go to a better shop
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Old 25 Aug 2009, 01:46 pm
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Check your antifreeze. Check the radiator cap. Make sure your water pump is working right. Check your oil. Hope this helps.
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Old 25 Aug 2009, 02:01 pm
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your radiator fan isn't working. The radiator fan is an electric fan and is used to pull air over the radiator to move the heat away from the radiator when the car is at stops and when driving at speeds under 30 MPH. Over 30 MPH there is enough air coming over the front of the car that the radiator fan isn't needed any longer.































if the engine temp rises when driving slow or at a stop then drops back down when moving at speed then the radiator fan isn't working.































if you have air conditioning in the car, turn it on. that will turn on the condensor fan and that will take the place of the radiator fan and pull air in so that the engine doesn't overheat. the condensor fan comes on automatically when the air conditioning is turned on. that is, of course, provided the condensor fan works.































there are three possibile reasons why the radiator fan doesn't work. the first is that the motor is seized or burnt out electrically. the second is that the temperature switch that turns it on is open circuited. the third is that the relay for the fan is bad. A mechanic will have to test each of these to determine what is wrong.































in the meantime, drive with the air conditioning on if you have A/C and if you find that the engine no longer runs hot you will have confirmed that the problem is with the radiator fan.































hope that helps
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Old 05 Sep 2009, 04:03 pm
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Default Re: 2004 Honda Civic - thermostat kept going to hot especially when idle but didn't seem to be

It the garage couldn't figure out what was wrong but replace the thermostat... then you might be replace the thermostat...



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