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Misterious Cooling Problem.

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Old 09-22-2018
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Misterious Cooling Problem.

Help Please!
2002 Civic non vtec.
My radiator hose get swollen at low speed and idle.
Radiator fans working.
If I drive at freeway speed overflow tank gets full and little bublees are visible car overheats at street.
If I turn on A/C fans, tempeture goes back to normal radiator hose gets soft and no more bublees.
When car cools off, antifrezze return to radiator from overfill thank. Please help.
Old 09-22-2018
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Re: Misterious Cooling Problem.

Originally Posted by ElToro626
My radiator hose get swollen at low speed and idle
Replace it with OEM Honda Hose

Originally Posted by ElToro626
If I drive at freeway speed overflow tank gets full and little bublees are visible car overheats at street.
Sounds exactly like failed headgasket, compressed air test into cylinder needed to absolutely make sure.

How inclined are you to work on a car?
Old 09-23-2018
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Re: Misterious Cooling Problem.

Originally Posted by Slumpertcivic
Sounds exactly like failed headgasket, compressed air test into cylinder needed to absolutely make sure.
Agree
Actually, when it comes to 7th gen 1.7L engine there's nothing mysterious about a blown headgasket...
Old 09-30-2018
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Re: Misterious Cooling Problem.

headgasket
..
Old 09-30-2018
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Re: Misterious Cooling Problem.

When car cools off, antifrezze return to radiator from overfill thank.
DOES return and the radiator stays completely full? Are you positive about this?
The radiator level is supposed to stay completely full to the top at all times. It doesn't take much fluid loss at all to compromise cooling efficiency (overheat)

Replace swollen hoses
Make sure radiator fans actually operate when the coolant temperature is hot enough.
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