Question about 2000 Honda Civic

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The water temp went up so I filled up the radaitor,the recovery bottle was at the full mark, but when I rechecked it the bottle was to full and the radaitor was low again. Does that mean the thermostat is not opening? IT's a 2000 HONDA CIVIC

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  • britton_newb Nov 17, 2009

    ya think that will take care of the problem?



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Whats happing is when it starts to get hot the coolant expans and some gos into the overflow and if the vacum valve in the radiator cap is bad it will let coolant out but not back in. So try replacing the cap and refill the radiator and see if it stops caps are inexpensive around 10 dollars. Hoped i helped

Posted on Nov 17, 2009

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You said you added water? Don't add anything except at least a 50/50 mix of antifreeze,and add PURE anti-freeze if you've been adding water.You need to arrive at a mixture that reads 34 below zero freeze protection in your strength of mix. don-ohio

Posted on Oct 03, 2011

  • don-ohio Oct 03, 2011

    You said you added water? Don't add anything except at least a 50/50 mix of antifreeze,and add PURE anti-freeze if you've been adding water.You need to arrive at a mixture that reads 34 below zero freeze protection in your strength of mix. don-ohio



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1 Answer

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Where do I put water in for radiator ?

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2 Answers

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2 Answers


Is the car actually overheating or are you just getting a red temp symbol on the dash? What does your temp gauge say? If it is indeed overheating and they did replace all the parts you say they did, they probably didn't bleed the cooling system properly. If any air is trapped in the system, it will cause a overheat condition. Take it back and tell them to bleed it right. Make sure they tightened up your radiator overflow/fill bottle cap as well...turn it until it "snaps". Now if the car is not physically overheating, and the temp gauge shows normal with the needle straight up (~190F), but you show a red temp symbol on the dash, your coolant level sensor in the overflow/fill bottle cap could be defective, the harness that plugs into it could be loose and/or your coolant level is too high. Lower the level until it is in the cross-hatch area printed on the bottle and reseat the connector. If it still has the red temp symbol, chances are very good the sensor in the bottle went bad. Mine went bad on my 04 Jetta 2.0 and I got a constant red symbol on the dash. Hope this helps you out.

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1 Answer

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