Overheating

Tiny
IZZY77
  • MEMBER
  • 1999 HONDA CIVIC
It overheats at strange times and when I turn on the heater full blast it will come down to the middle a normal level and its burning oil really fast
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Thursday, November 10th, 2011 AT 4:50 AM

11 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
As far as the oil, is it putting out blue exhaust? Have you checked the head gaskets? If this is a 2.5, it is a very common problem. As far as the overheating, make sure the cooling fans are working. Make sure the coolant is full. Check the thermostat to make sure it is working properly.
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Thursday, November 10th, 2011 AT 4:56 AM
Tiny
IZZY77
  • MEMBER
No blue smoke so I didnt think it was a head gasket
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Thursday, November 10th, 2011 AT 5:00 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
The blue smoke would have made me feel it was a proble with rings, valve guides. Since there is no blue smoke, that leads me to think head gasket on this vehicle. Is it the 2.5L? Have you noticed any oil leaks under it?

Let me know. If it is the 2.2L, then the head gasket is less likely. They would run forever.
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Thursday, November 10th, 2011 AT 5:02 AM
Tiny
IZZY77
  • MEMBER
Its a 1999 honda civic ex 1.6L engine no visable oil leak no smoke
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Thursday, November 10th, 2011 AT 5:11 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
I am so sorry. I was thinking subaru. As far as the honda, are the cooling fans coming on? The idea that the heater helps cool it leads me to believe the fans are not coming on. Have you noticed that it overheats while sitting traffic or does it do it while at highway speeds?

Sorry again to worry you like that. I answered a subaru question before yours that is doing a similar thing.
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Thursday, November 10th, 2011 AT 5:22 AM
Tiny
IZZY77
  • MEMBER
No problem it does it while sitting in traffic mostly
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Thursday, November 10th, 2011 AT 5:24 AM
Tiny
IZZY77
  • MEMBER
The ac works and comes on so I assume the coolin fans are working
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Thursday, November 10th, 2011 AT 5:25 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Check to make sure the cooling fan is turning on. If you think about it, while driving, air circulates through the radiator based on speed. When in traffic, the cooling fan has to draw the air through to cool the radiator. If it isn't turning on, it will overheat. Plus, since the heater helps it cool down, that tells me the cooling system is working properly.

Check that and let me know what you find.
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Thursday, November 10th, 2011 AT 5:27 AM
Tiny
IZZY77
  • MEMBER
That doesnt explain why its burning oil quickly could that be linked somehow does the overheating use more oil or what not?
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Thursday, November 10th, 2011 AT 5:31 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
If the engine is running hotter than it should, it could have an affect on oil consumption. With the engine cold, check to make sure oil isn't mixing with coolant or coolant with oil. As far as the AC, it will work even if the fan is bad. Double check to make sure.
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Thursday, November 10th, 2011 AT 5:42 AM
Tiny
KHLOW2008
  • EXPERT
What is the mileage of the vehicle?
What grade of engine oil are you using?
Is this automatic or manual transmission?
Do you have coolant losses issues?

With the age, the valve seals should already be worn pretty badly. The exhaust would not show a lot of blue smoke if the catalytic converter is still in good condition, unless the exhaust valve seals are badly worn.
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Thursday, November 10th, 2011 AT 1:31 PM

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