There could be many reasons. Is the coolant full? Have you tried replacing the thermostat? Is coolant being consumed? Are there any leaks? Has the radiator been flushed?
Let me know.
Joe
Oct 26, 2010 at 10:47 AM
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.