Cooling system

2005 DODGE NEON
172,000 MILES • 2.0L • 4 CYL • FWD • AUTOMATIC
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DODGENWW
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My car keeps boiling back into the overflow tank after its been driven enough to warm up. Why does it do this?
May 6, 2016 at 11:34 AM
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CARADIODOC
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  • 34,414 POSTS
Rather than go through the list of possibilities, what have you checked so far? Does your heater blow hot air? Is the radiator fan turning on? Has it been chemically-checked for a leaking cylinder head gasket?
May 6, 2016 at 12:57 PM
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DODGENWW
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Yes the fan works the heater blows hot air and the engine is a salvage rebuilt. It did not have any signs of leaking when I got it.
May 6, 2016 at 7:24 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,694 POSTS
It sounds like you have a head gasket that is blown check this guide out and get back to us.

https://www.2carpros.com/articles/head-gasket-blown-test


Best, Ken
May 8, 2016 at 5:56 AM
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