What is Causing Steam to Emit from my EngineCoolantContainer?

1993 LEXUS ES 300
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SRPYLE
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After a ten minute drive, Steam begins to rise from under my hood. The Temperauture Guage NEVER rose. As i pull over, Open the Hood, and have a look, i notice that the Steam is Spraying out of the Overflow Cap for my Engine Coolant. And the Coolant will be boiling in the Container, and my Temperature Guage never moved.
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Oct 10, 2011 at 7:23 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
I recommend having the system checked. Based on your description, it sounds like the engine is overheating. If it isn't, you may havea bad head gasket allowing compressed air from the engine to enter the cooling system and forcing coolant out. Try this. With the engine cold, remove the radiator cap and start the engine. If the coolant starts shooting out, you have a bad head gasket.
Oct 10, 2011 at 7:54 PM
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