Will it hurt my Lincoln Navigator 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 does a puddle underneath my Lincoln Navigator mean?

Puddles could indicate that your vehicle is leaking coolant, oil, or brake fluid. Ignoring these leaks can lead to permanent engine damage, so address these symptoms ASAP with a tune-up service.

What do hard starts and stops do to my Navigator engine?

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.

Where can I have a Lincoln Navigator tune-up done?

At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair Lincoln Navigators.

How frequently do the fuel injectors in my Lincoln Navigator need to be cleaned?

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 Lincoln owner’s manual for exact guidelines.

Who can I go to for Lincoln Navigator tune-ups?

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

2003 Lincoln Navigator Tune-Up & Engine Service

Get a Tune-Up

Schedule an Appointment for Your Lincoln Navigator Tune-Up

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

Schedule an Appointment

Enhance Lincoln Navigator Performance with a Tune-Up

Is your engine overdue for a tune-up? If you tend to ignore your car until something goes wrong, it might be time to change your ways, particularly if you want to keep your 2003 Lincoln Navigator in tip-top shape. Regular engine tune-ups can optimize your Navigator’s power on the road. 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 Lincoln's recommendations, you can rest assured you’re investing in your Navigator’s long-term engine performance.

Routine Engine Tune-Up Service for Your Lincoln Navigator

Your nearest Firestone Complete Auto Care location has several options to choose from when it comes to Lincoln Navigator engine tune-up services. The standard Firestone Tune-Up is one service option. This includes the installation of new spark plugs and a visual inspection of your engine’s components, plus a lifetime warranty on parts*. A second service option replaces the air and fuel filter in your Navigator. 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 Navigator’s fuel injectors, throttle body, and throttle plate. The result? Restored fuel system performance. Here’s something to remember when choosing services: the mileage and service history of your Navigator can determine what kind of service it 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 Should I Go for My Lincoln Navigator Tune-Up?

Schedule your next 2003 Navigator engine tune-up service at Firestone Complete Auto Care. Not sure when you’re due for a tune-up? Use Lincoln’s recommended maintenance schedule as a reference point, or schedule an appointment ASAP if you notice any of these signs: decreased gas mileage, "rough" idling or stalling when stopped, knocking noises in the engine, or a lit up check engine light on your dashboard.

*Ask a Firestone Complete Auto Care teammate about full terms and conditions for warranties.

Common Engine Tune-Up Q&A For 2003 Lincoln Navigators

Will it hurt my Lincoln Navigator 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 does a puddle underneath my Lincoln Navigator mean? Puddles could indicate that your vehicle is leaking coolant, oil, or brake fluid. Ignoring these leaks can lead to permanent engine damage, so address these symptoms ASAP with a tune-up service.
What do hard starts and stops do to my Navigator engine? 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.
Where can I have a Lincoln Navigator tune-up done? At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair Lincoln Navigators.
How frequently do the fuel injectors in my Lincoln Navigator need to be cleaned? 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 Lincoln owner’s manual for exact guidelines.
Who can I go to for Lincoln Navigator tune-ups? Visit your local Firestone Complete Auto Care for your Lincoln Navigator tune-up. Make an appointment online and view our latest offers to save big.

2003 Lincoln Navigator Maintenance

We know it’s not just a car, it’s your car. We’ll help you properly maintain your Lincoln Navigator to keep it on the road and running smoothly. Learn more about maintenance below.

2003 Lincoln Navigator Repair

Your Lincoln Navigator runs best when it’s well cared for. Make sure it’s always in tip-top shape with repairs from Firestone Complete Auto Care. Learn more about 2003 Lincoln Navigator repairs below.