One problem related to gas recirculation valve (egr valve) has been reported for the 2006 Mercury Grand Marquis. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Mercury Grand Marquis based on all problems reported for the 2006 Grand Marquis.
My 2006 Grand Marquis has a very annoying roaring noise when the tachometer is between 1800 and 2000 rpm. Also at highway speed between 65mph and 70mph which is about 1800 on the tachometer. Very irritating.
| Engine And Engine Cooling problems | |
| Manifold/header/muffler/tail Pipe problems | |
| Car Stall problems | |
| Coolant Leaking problems | |
| Gas Recirculation Valve (egr Valve) problems |