Cooling system

Tiny
DODGENWW
  • MEMBER
  • 2005 DODGE NEON
  • 2.0L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 172,000 MILES
My car keeps boiling back into the overflow tank after its been driven enough to warm up. Why does it do this?
Friday, May 6th, 2016 AT 6:34 PM

3 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,874 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?
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Friday, May 6th, 2016 AT 7:57 PM
Tiny
DODGENWW
  • MEMBER
  • 56 POSTS
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.
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Saturday, May 7th, 2016 AT 2:24 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,702 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
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Sunday, May 8th, 2016 AT 12:56 PM

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