Thanks for your response. The thermostat is for sure installed correctly - as for the heater core being plugged or gauge reading, i can't say for sure. The problem with the Vibe is that to get at the heater core you have to take apart the dashboard and that means time and money! Ah well, what can ya...

Hello, Having trouble with my 2005 Vibe. I've listed the problems below and I'm not sure if they are related or not. 1. No heat - I've replaced the: water pump, thermostat and flushed the rad2. Water Temp Gage - get's to 120 really quickly and stays there unless the car is turned off. I realize that...