Is it expensive to replace the egr valve on a 1999 mercury grand marquis?

Replacing the EGR valve on a 1999 Mercury Grand Marquis typically costs between $100 and $300, depending on whether you choose to do it yourself or have it done at a shop. Parts usually range from $50 to $150, while labor costs can add an additional $50 to $150. Overall, it's a relatively affordable repair compared to many other automotive issues. Always check local labor rates and parts availability for the most accurate estimate.