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. Spark plugs are small but mighty. The spark of electricity that the plug emits across a small gap creates the ignition for the combustion needed to start your car. Without that spark, your car won't start.

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

Don't ignore puddles of fluid under your Mercury Grand Marquis. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.

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

Hard stops and starts can lead to premature wear on your engine’s components. Lighten up that lead foot and opt for steady, fluid starts and stops instead. Your engine (and your passengers!) will thank you.

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 should I clean my Mercury Grand Marquis fuel injectors?

There is no hard and fast rule on how often fuel injectors should be cleaned, and it can vary based on driving habits and fuel type. Some manufacturers may suggest including a fuel system cleaning in your regular maintenance schedule. Or you may need to clean your fuel injectors as needed if you notice signs of a fuel system problem.

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.

Engine Tune-Up Service for Your 1991 Mercury Grand Marquis

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Schedule 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.

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Tune-Ups to Help Your Mercury Grand Marquis Run Better

Is it time for an engine tune-up? If you tend to ignore your car until something goes wrong, it could be time for a new way of doing things, especially if you want your 1991 Mercury Grand Marquis’s engine to last for a long time. Regular engine tune-ups can optimize your Grand Marquis’s power on the road. Tune-ups help your engine start smoothly and run efficiently, which can mean better fuel economy (a win for you) and lower emissions (a win for the environment). When you follow the guidelines specified by Mercury for your vehicle’s tune-up schedule, you can rest assured you’re investing in your Grand Marquis’s long-term engine performance.

Routine Engine Tune-Up Service for Your Mercury Grand Marquis

Your nearest Firestone Complete Auto Care location has several options to choose from when it comes to Mercury Grand Marquis engine tune-up services. The first is the standard Firestone Tune-Up. It includes a complete visual inspection of engine components, installation of new spark plugs, and a lifetime warranty on parts*. 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. A one-size-fits-all engine tune-up procedure doesn’t necessarily exist. Chat with a Firestone technician before you jump into a specific service to ensure your engine tune-up money is well-spent.

Where to Get a Tune-Up for Your Mercury Grand Marquis

Schedule your next 1991 Grand Marquis engine tune-up service at Firestone Complete Auto Care. Not sure when you’re due for a tune-up? Use Mercury’s recommended maintenance schedule as a reference point, or schedule an appointment ASAP if you notice any of these signs: stalling or shaky idling when you’re stopped, diminished fuel economy, an illuminated check engine light on your dashboard, or a knocking sound when the engine is running.

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

1991 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. Spark plugs are small but mighty. The spark of electricity that the plug emits across a small gap creates the ignition for the combustion needed to start your car. Without that spark, your car won't start.
What do I do if I see a pool of liquid under my Mercury Grand Marquis? Don't ignore puddles of fluid under your Mercury Grand Marquis. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.
Are some driving habits better for my Mercury Grand Marquis engine than others? Hard stops and starts can lead to premature wear on your engine’s components. Lighten up that lead foot and opt for steady, fluid starts and stops instead. Your engine (and your passengers!) will thank you.
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 should I clean my Mercury Grand Marquis fuel injectors? There is no hard and fast rule on how often fuel injectors should be cleaned, and it can vary based on driving habits and fuel type. Some manufacturers may suggest including a fuel system cleaning in your regular maintenance schedule. Or you may need to clean your fuel injectors as needed if you notice signs of a fuel system problem.
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.

1991 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.

1991 Mercury Grand Marquis Repair

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 1991 Mercury Grand Marquis repairs.