1999 Buick Century Repair Question
Topics covered: Heater, Heater core, Coolant.
Mileage: 150,000 miles.
Mileage: 150,000 miles.
Asked on February 20, 2013
Buick Century Heater Problem
My heat blows cold while it idles,but gives hot heat when driving.
Asked by (pending member)Answer
Replied on February 20, 2013
You may need to flush heater core? The water pump slows down at idle, speeds up at higher rpms. Coolant flow through heater core slows down at idle. If heater core is restricted, even less flow at idle.
