Table 1 shows nine common engine and engine cooling related problems of the 2000 Mercury Grand Marquis. The number one most common problem is related to the manifold/header/muffler/tail pipe (ten problems). The second most common problem is related to the engine and engine cooling (six problems).
The intake manifold is crack Read details...
Unknown Read details...
I believe this issue effects millions of Ford and Mercury vehicles, many of which are taxi, government, and police cars. Apparently, the computer (pcm) that controls the engine can shut the engine down while the vehicle is driving when certain sensors fail (at least 2 known sensors per my research). Read details...