One problem related to engine belts and pulleys has been reported for the 2002 Mercury Grand Marquis. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Mercury Grand Marquis based on all problems reported for the 2002 Grand Marquis.
Serpentine belt broke off while consumer was driving, causing steering, brakes, and a few other parts on vehicle to malfunction. Contacted dealer, and dealer was not willing to do anything.