Will it hurt my Mercury Grand Marquis to drive with old spark plugs?

Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on Mercury’s recommendations.

What do I do if I see a pool of liquid under my Mercury Grand Marquis?

Puddles could indicate an oil leak, coolant leak, or brake fluid leak– all of which can critically hurt your engine. Have your engine inspected as soon as you spot a pool of liquid in your usual parking spot.

Are some driving habits better for my Mercury Grand Marquis engine than others?

You can make your driving habits more engine-friendly. Hard starts and stops can increase the stress on engine parts, especially over many years. Boost your fuel economy and care for your engine by using gradual, smooth starts and stops instead.

I need a Mercury Grand Marquis tune-up. Where can I get on?

At your nearby Firestone Complete Auto Care! Whether you need Mercury Grand Marquis service, maintenance, or repairs, our technicians can get the job done.

How often do Mercury Grand Marquis fuel injectors need to be cleaned?

The frequency at which car fuel injectors should be cleaned can vary depending on several factors, including the type of fuel used and the driving conditions. Some manufacturers generally recommend a fuel system cleaning as part of your general car maintenance, or as needed based on symptoms of poor fuel system performance.

Who offers Mercury Grand Marquis tune-ups?

Visit your nearby Firestone Complete Auto Care for Mercury Grand Marquis tune-ups and more. Schedule your appointment online and save big by checking out our latest offers.

1999 Mercury Grand Marquis Tune-Up & Engine Service

Get a Tune-Up

Schedule an Appointment for Your Mercury Grand Marquis Tune-Up

Tune in to tune up. Listen to your Grand Marquis and schedule an engine tune-up at the first strange squeak, clunk, or click. Make an appointment today.

Schedule an Appointment

Enhance Mercury Grand Marquis Performance with a Tune-Up

Is it tune-up time? If you tend to ignore your car until something goes wrong, now is the time to work on that habit, particularly if you want to keep your 1999 Mercury Grand Marquis in tip-top shape. Routine engine tune-ups can bring power back to your Grand Marquis. Tune-ups give your engine a boost in efficiency, which can mean better fuel economy (a win for you) and lower emissions (a win for the environment). When you get routine engine tune-ups based on Mercury's recommendations, you’re taking vital steps toward keeping your Grand Marquis’s engine running smoother, longer.

Mercury Grand Marquis Engine Tune-Up Services

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 1999 Mercury Grand Marquis. The standard Firestone Tune-Up is one service option. The standard Firestone Tune-Up includes new spark plugs (and installation!), a thorough inspection of engine components, and a lifetime parts warranty*. The second service focuses on your Grand Marquis's filters, specifically replacing the air filter and fuel filter. Our third service is a thorough cleaning of the fuel system. During this type of tune-up, we use a three-step process to get rid of harmful varnish, dirt, and carbon deposit buildup in your Grand Marquis’s fuel injectors, throttle body, and throttle plate. The result? Restored fuel system performance. Keep in mind that your Grand Marquis's mileage and maintenance history can uniquely impact its tune-up needs. This means that a tune-up service that’s a great fit for another car may not be optimal for yours. Talk to a technician about your driving style, mileage, and service history to learn more about your vehicle's specific needs.

Where to Get a Mercury Grand Marquis Tune-Up

Schedule your next 1999 Grand Marquis engine tune-up service at Firestone Complete Auto Care. Consult your vehicle’s recommended service schedule from Mercury, or make a service appointment if you notice any of these symptoms from your engine: decreased gas mileage, "rough" idling or stalling when stopped, knocking noises in the engine, or a lit up check engine light on your dashboard.

*Check with a teammate at Firestone Complete Auto Care for complete terms and conditions regarding warranties.

1999 Mercury Grand Marquis Engine Tune-Up Q&A

Will it hurt my Mercury Grand Marquis to drive with old spark plugs? Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on Mercury’s recommendations.
What do I do if I see a pool of liquid under my Mercury Grand Marquis? Puddles could indicate an oil leak, coolant leak, or brake fluid leak– all of which can critically hurt your engine. Have your engine inspected as soon as you spot a pool of liquid in your usual parking spot.
Are some driving habits better for my Mercury Grand Marquis engine than others? You can make your driving habits more engine-friendly. Hard starts and stops can increase the stress on engine parts, especially over many years. Boost your fuel economy and care for your engine by using gradual, smooth starts and stops instead.
I need a Mercury Grand Marquis tune-up. Where can I get on? At your nearby Firestone Complete Auto Care! Whether you need Mercury Grand Marquis service, maintenance, or repairs, our technicians can get the job done.
How often do Mercury Grand Marquis fuel injectors need to be cleaned? The frequency at which car fuel injectors should be cleaned can vary depending on several factors, including the type of fuel used and the driving conditions. Some manufacturers generally recommend a fuel system cleaning as part of your general car maintenance, or as needed based on symptoms of poor fuel system performance.
Who offers Mercury Grand Marquis tune-ups? Visit your nearby Firestone Complete Auto Care for Mercury Grand Marquis tune-ups and more. Schedule your appointment online and save big by checking out our latest offers.

1999 Mercury Grand Marquis Maintenance

Take care of your vehicle and it'll take care of you. Click on a service below to learn more about properly maintaining your Mercury Grand Marquis.

Repair Service for Your 1999 Mercury Grand Marquis

Nothing lasts forever. Even your Mercury Grand Marquis's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 1999 Mercury Grand Marquis repairs.