the heater is not working already put a new thermostat in and still no heat.
Feb 22, 2010 at 11:40 AM
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CARADIODOC
✓Experienced Mechanic
34,413 POSTS
Feel the two heater hoses when the engine is warmed up. They should be too hot to hold onto for very long. If they are just warm, suspect a plugged heater core. Disconnect the two hoses from the engine and run water through them from a garden hose.