1989 Mercury Marquis problems

Common 1989 Mercury Marquis problems

The Mercury Grand Marquis, a popular car from the late 1980s and early 1990s, has been known to have several common problems that have been reported by its owners. One of the most frequently reported issues is the intake manifold failure, particularly in the 1997 model year. This problem is characterized by the engine running hot, overheating, and eventually cracking the intake manifold, which can lead to leaking coolant behind the alternator.

Another common problem with the Mercury Grand Marquis is related to the headlights. In the 2005 model year, there were numerous reports of headlights not working properly. This issue can be caused by a variety of factors, including faulty wiring, blown fuses, or a malfunctioning switch. The average cost to fix this issue is around $500, and it typically occurs at an average mileage of 83,000 miles.

The 2007 model year of the Mercury Grand Marquis has also been known to have issues with the valves dropping through the engine. This problem can be caused by a variety of factors, including worn-out valve guides, damaged valve springs, or a faulty valve retainer. The average cost to fix this issue is around $3,300, and it typically occurs at an average mileage of 76,000 miles.

For the 1989 model year, there were reports of a timing problem that caused the car to kick and sputter instead of bringing up the RPMs when off idle. This problem was caused by a faulty distributor, which was replaced, but the issue persisted. The problem was eventually traced back to the timing, which was set back to the factory 10 degrees before top dead center, but still caused issues. The solution was to replace the plugs, wires, cap, and rotor, but the problem persisted.

In summary, the Mercury Grand Marquis has been known to have several common problems, including intake manifold failure, headlights not working properly, and valves dropping through the engine. These issues can be costly to fix and typically occur at higher mileage. It is important for owners of these vehicles to be aware of these issues and to address them promptly to avoid further damage to the vehicle.

How many miles does a Mercury Marquis last?

Well taken care of Mercury Grand Marquis and the very similar Ford Crown Vics and Lincoln Town Cars have frequently gone 300,000+ miles.

What engine is in a 1989 Grand Marquis?

1989 Mercury Grand Marquis is 4 doors Sedan available in 2 variants MSRP ranges from $17181 to $17818. Mercury Grand Marquis offers 150 horsepower with the 4-Speed Automatic transmission. It features 8 cylinder 5.0L V8 150hp 270ft. lbs.

Do Grand Marquis have transmission problems?

Problem Description

Transmission problems are common in this model, often as a result of a failed front pump.

Why did they stop making Mercury Marquis?

As Ford Motor Company expanded its use of front-wheel drive, the Marquis ended production after the 1986 model year, replaced by the Mercury Sable (the Mercury counterpart of the Ford Taurus). As the Grand Marquis, the nameplate continued on until the closure of Mercury during the 2011 model year.

1989 Mercury Marquis car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Mercury Marquis problems, we found that the most common problems with these 2023 model year vehicles are:

• Electrical system problems
• Service brakes problems
• Hydraulic problems
• Power train problems
• Tires problems

The graph below shows statistics for all 1989 Mercury Marquis vehicle components and the number of complaints received.