If you suspect a faulty radiator it must be flow tested for partial blockage and check for air flow through the fins, this must be done at radiator repair shop, a back flush is no good for this.
mark (mhpautos)
Sep 1, 2010 at 10:32 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.