Check all the usual things first, thermostat, blocked radiator, faulty pressure cap, coolant leaks, faulty fans, and head gasket problems.
mark (mhpautos)
Apr 24, 2010 at 11:14 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.