possible causes are low coolant, thermostat, clogged heater core, bad head gasket or blend door stuck.
Roy
Dec 23, 2011 at 8:47 PM
FIRE FIGHTER
MEMBER
2 POSTS
where blend door at
Dec 23, 2011 at 8:55 PM
ASEMASTER6371
CAR REPAIR CONTRIBUTOR
52,796 POSTS
inside the heater box inside the dash.
Roy
Dec 23, 2011 at 9:38 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.