Preliminary Checks
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2002 Mercury Sable, 2002 Mercury Mountaineer, 2002 Mercury Grand Marquis, 2002 Mercury Cougar, and 2002 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
Check for restricted air filter/air intake duct. Check Automatic Transmission Fluid (ATF) level. Check fuel quality and coolant level. Ensure engine is operating at normal operating temperature. Check cooling system for stuck open or closed thermostat, correct coolant level or coolant concentration. Repair as necessary. See appropriate article in ENGINE COOLING.