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2004 Chevrolet Cavalier Cavalier loosing coolant

Tiny
JHEAD85
  • MEMBER
  • 2004 CHEVROLET CAVALIER
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 90,000 MILES
2004 cavalier ecotec engine. Problem is that to me the coolant is not being circulated right.I'm loosing coolant out of the fill bottle while driving. Also I've noticed it builds a lot of pressure in the lines. When starting the car hose is soft but 5 mins into it it's rock hard and the only way to relieve pressure is to open cap slowly. If I leave the cap loose and give it gas the coolant starts to over flow. Changes water pump. Tstat. The radiator is clean and flows good. Engine temp sensor changed also.I'm running outta sloutions. Fan works like it should. Comes on during ac and when engine get over 200+.(Also as right now I got no thermostat in the car but it still gets to hot 200+. Can't figure it out. Other then that car runs great
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Monday, April 28th, 2014 AT 4:36 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,923 POSTS
This is typical of a leaking cylinder head gasket. Your mechanic can perform a chemical test at the reservoir cap to check for combustion gases getting into the cooling system.
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Monday, April 28th, 2014 AT 4:51 PM

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