Table 1 shows eight common engine and engine cooling related problems of the 1999 Mercury Grand Marquis. The number one most common problem is related to the manifold/header/muffler/tail pipe (25 problems). The second most common problem is related to the engine cooling system (two problems).
The contact owns a 1999 Mercury Grand Marquis. The contact stated that the vehicle had a leaking intake manifold. The vehicle was taken to an independent mechanic and diagnosed that the intake manifold needed to be replaced. The vehicle was not repaired. Read details...
I have a 1999 Mercury Grand Marquis. The plastic intake manifold cracked. I have learn that this is a problem alot of people have with the Ford vehicles. Read details...
My 1999 Mercury Grand Marquis has a persistant oil leak from the right rear of the engine head that is exactly as described in Ford motor company's technical service bulletin 02-22-07. The dealership, irvine Lincoln Mercury, has had three tries to correct the problem under warranty and have failed Read details...