What happens if my Lexus LS400 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 Lexus’s recommendations.

What do I do if I see a pool of liquid under my Lexus LS400?

Don't ignore puddles of fluid under your Lexus LS400. 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 Lexus LS400 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.

Where can I have a Lexus LS400 tune-up done?

At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair Lexus LS400s.

How often should I clean my Lexus LS400 fuel injectors?

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 Lexus LS400 tune-ups?

Your local Firestone Complete Auto Care is happy to help with your Lexus LS400 tune-up. Visit us online to see our latest offers and book an appointment.

1991 Lexus LS400 Tune-Up & Engine Service

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Schedule Your Lexus LS400 Tune-Up Service Appointment

Tune in to tune up. Listen to your LS400 and schedule an engine tune-up at the first strange squeak, clunk, or click. Make an appointment today.

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Tune Into Your Lexus LS400

Is it time for an engine tune-up? If you tend to ignore your car until something goes wrong, it might be time to change your ways, especially if you drive a 1991 Lexus LS400. Routine engine tune-ups can bring power back to your LS400. They're designed to help your engine start easier and run more efficiently, so you can enjoy improved fuel economy and lower emissions. When you take your car for regular engine tune-ups as recommended by Lexus, you’re taking vital steps toward keeping your LS400’s engine running smoother, longer.

Engine Tune-Up for Lexus LS400

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 1991 Lexus LS400. 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*. Another service option pays special attention to the filters in your LS400. Specifically, we replace the fuel filter and air 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 LS400’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 LS400 can determine what kind of service it needs. If you’re not sure what services are the best fit for your car, let us help! Chat with a Firestone technician before you jump into a specific service to ensure your engine tune-up money is well-spent.

Where Should I Go for My Lexus LS400 Tune-Up?

Schedule your next 1991 LS400 engine tune-up service at Firestone Complete Auto Care. Not sure when you’re due for a tune-up? Use Lexus’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.

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

Common Engine Tune-Up Q&A For 1991 Lexus LS400s

What happens if my Lexus LS400 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 Lexus’s recommendations.
What do I do if I see a pool of liquid under my Lexus LS400? Don't ignore puddles of fluid under your Lexus LS400. 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 Lexus LS400 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.
Where can I have a Lexus LS400 tune-up done? At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair Lexus LS400s.
How often should I clean my Lexus LS400 fuel injectors? 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 Lexus LS400 tune-ups? Your local Firestone Complete Auto Care is happy to help with your Lexus LS400 tune-up. Visit us online to see our latest offers and book an appointment.

Proactive Maintenance - 1991 Lexus LS400

Stay ahead of any potential issues with your Lexus LS400 so your car can keep pace with life! Learn more about proper maintenance for your vehicle below.

Repair Service for Your 1991 Lexus LS400

Your car takes care of you, and we’ll take care of your car. When it’s time for a repair on your Lexus LS400, we’re here to help. Check out more info below about 1991 Lexus LS400 repairs.