On my Honda Civic EX 2005 the cooling fans do not start when the temperature gauge goes up to "H". Replaced the switch and still the fans do not work. Jumped the fans switch for the fans to run continuously but the temperature gauge still goes up to "H". Any ideas?

 

Check coolant level and bleed the system of air.

Stop allowing the engine to overheat. If you haven't already, you will blow the head gasket.