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Old 30 Dec 2010, 06:46 am
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Default 08 Honda civic over heated I need help?

Ok so today I went to the local store and on my way home like a five min drive the temp on the car was going up. I heard if your car over heats ur suppose to put the heater on full blast so I did but then the heater was blowing cold air the ac was not on so I don't get why that happened. Can it just be an oil change? I am due for one and if that's all I need then perfect but what els could cause that problem? I'm just glad it happened when I was in town the weather has been cold and rainy so not sure if that might be a problem? Also my oil life says 40% which I thought my oil was good till 30 how reliable is the oil life reading and what does it really measure?
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Old 30 Dec 2010, 07:01 am
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Join Date: Nov 2010
Posts: 23

don't drive the car until you figure out what's wrong. driving with your engine overheating will basically melt everything inside the crankcase and/or warp the heads, which can result in needing a replacement. pop your hood and take a look at the car, check your coolant level and see how much is in the reservoir. add some if needed(if it's cold where you live, make sure you add either straight anti-freeze or a 50/50 mixture. do NOT add water to your coolant if it's cold). take a look at your radiator hoses, one of them might be cracked or have a hole in it. your oil isn't old enough to cause your car to overheat, but if it's low for some reason then it can definitely cause this. use the dipstick to check your oil level. my best advice would be to call a mechanic and have a car towed to a shop.
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Old 30 Dec 2010, 07:16 am
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Join Date: Dec 2010
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Oil has almost nothing to do with this problem.

There are many reasons why your engine has overheated. Clogged lines, broke thermostat, fan inop, etc.

-Check your coolant level

-Check to see if the fans spin

-Check if your check engine light came on, it could mean some sensor is not working or reporting a bigger problem.(if thats the case take it to AutoZone and get a free diagnostic)

And FYI oil life is calculated by different factors, length of time since last oil change, oil viscosity, etc. By having low life expectancy oil level doesn't cause overheating.

Cooling system is your concern at this point.
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Old 30 Dec 2010, 07:31 am
Join Date: Oct 2007
Posts: 36

Did you notice any coolant leaks? Cold air from the vents could mean no coolant. The 2006 to 2008 Civics are becoming notorious for engine blocks cracking allowing coolant to leak

There is a TSB (Technical Service Bulletin) out for this problem.

If this is the problem you should be covered under warranty but call Honda customer service to get more info.

Honda Automobile Cust. Service

1919 Torrance Blvd.

Mail Stop: 500 - 2N - 7D

Torrance, CA 90501-2746

(800) 999-1009
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