Mercury Grand Marquis owners have reported 39 problems related to engine cooling system (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Mercury Grand Marquis based on all problems reported for the Grand Marquis.
Engine overheated and investigation of the problem found that theplastic intake manifold developed a 3" crack right behind the alternator.
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all problems of the 1996 Mercury Grand Marquis
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Water pump failed. Nlm.
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all problems of the 1997 Mercury Grand Marquis
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Low antifreeze level during maintenance investigation revealed cracked in plastic intake manifold. Dealer indicates has seen this failure signature before.
Flames shot from under the windshield wipers and the transmission area before the entire engine caught fire. Vehicle showed symptoms of having hose leaking with anti-freeze before fire went off. Also, the engine and fire wall was burned, consumer wasn't able to distinguish the cause of fire.