What happens if my Mercury Grand Marquis spark plugs fail?

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 does a puddle underneath my Mercury Grand Marquis mean?

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 hard starts and stops bad for my Mercury Grand Marquis engine?

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.

Where can I get a tune-up for my Mercury Grand Marquis?

At the nearest Firestone Complete Auto Care! We’re ready to help service, maintain, and repair your Mercury Grand Marquis.

How often should I clean my Mercury Grand Marquis fuel injectors?

The cleaning schedule for vehicle fuel injectors varies depending on your driving conditions and the type of fuel you use. Some manufacturers suggest cleaning your fuel system as part of routine maintenance, while others will recommend it on an as-needed basis if you’re experiencing poor performance. Reference your Mercury owner’s manual for exact guidelines.

Who does Mercury Grand Marquis tune-ups?

Visit your local Firestone Complete Auto Care for your Mercury Grand Marquis tune-up. Make an appointment online and view our latest offers to save big.

2008 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

Tune Into Your Mercury Grand Marquis

Is it time for an engine tune-up? If you usually wait until your car has an issue to take it in for service, now is the time to work on that habit, especially if you drive a 2008 Mercury Grand Marquis. Periodic tune-ups can bring more power back to your Grand Marquis’s engine. They're designed to help your engine start easier and run more efficiently, 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 can rest assured you’re investing in your Grand Marquis’s long-term engine performance.

Engine Tune-Up for Mercury Grand Marquis

The Firestone Complete Auto Care location in your community offers several Mercury Grand Marquis engine tune-up services. One option is the standard Firestone Tune-Up. This includes the installation of new spark plugs and a visual inspection of your engine’s components, plus 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. This goes a long way in boosting your fuel system’s overall 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. Ask one of our technicians what your vehicle needs, based on your driving habits and your car’s current condition.

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

Come to Firestone Complete Auto Care for your next 2008 Grand Marquis engine tune-up. Follow Mercury's recommended maintenance schedule or book an appointment as soon as you notice one of the following: decreased gas mileage, "rough" idling or stalling when stopped, knocking noises in the engine, or a lit up check engine light on your dashboard.

*Talk to a Firestone Complete Auto Care teammate for full terms and conditions on warranties.

2008 Mercury Grand Marquis Engine Tune-Up Q&A

What happens if my Mercury Grand Marquis spark plugs fail? 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 does a puddle underneath my Mercury Grand Marquis mean? 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 hard starts and stops bad for my Mercury Grand Marquis engine? 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.
Where can I get a tune-up for my Mercury Grand Marquis? At the nearest Firestone Complete Auto Care! We’re ready to help service, maintain, and repair your Mercury Grand Marquis.
How often should I clean my Mercury Grand Marquis fuel injectors? The cleaning schedule for vehicle fuel injectors varies depending on your driving conditions and the type of fuel you use. Some manufacturers suggest cleaning your fuel system as part of routine maintenance, while others will recommend it on an as-needed basis if you’re experiencing poor performance. Reference your Mercury owner’s manual for exact guidelines.
Who does Mercury Grand Marquis tune-ups? Visit your local Firestone Complete Auto Care for your Mercury Grand Marquis tune-up. Make an appointment online and view our latest offers to save big.

2008 Mercury Grand Marquis Maintenance

Stay ahead of any potential issues with your Mercury Grand Marquis so your car can keep pace with life! Learn more about proper maintenance for your vehicle below.

Repair Service for Your 2008 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 2008 Mercury Grand Marquis repairs.