When should Mitsubishi Sigma spark plugs be replaced?

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 Mitsubishi Sigma?

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 hard starts and stops bad for my Mitsubishi Sigma 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 get a Mitsubishi Sigma tune-up?

At your closest Firestone Complete Auto Care! Our experienced technicians offer Mitsubishi Sigma service, maintenance, and repairs.

How frequently do the fuel injectors in my Mitsubishi Sigma 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 does Mitsubishi Sigma tune-ups?

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

1990 Mitsubishi Sigma Engine Tune-Ups & Maintenance

Get a Tune-Up

Schedule an Appointment for Your Mitsubishi Sigma Tune-Up

If your Sigma is acting strange or making new noises, it could be engine tune-up time. Don’t wait until small problems get bigger. Make an appointment now.

Schedule an Appointment

Tune Into Your Mitsubishi Sigma

Is it time for an engine tune-up? If you usually wait until your car has an issue to take it in for service, it might be time to change your ways, especially if you want your 1990 Mitsubishi Sigma’s engine to last for a long time. Routine engine tune-ups can bring power back to your Sigma. Tune-ups help your engine start smoothly and run efficiently, which can lead to lower emission levels and better fuel economy. When you follow the guidelines specified by Mitsubishi for your vehicle’s tune-up schedule, you invest in your Sigma's long-term health and engine performance.

Engine Tune-Up for Mitsubishi Sigma

The Firestone Complete Auto Care location in your community offers several Mitsubishi Sigma engine tune-up services. The standard Firestone Tune-Up is one service option. 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 Sigma's filters, specifically replacing the air filter and fuel filter. The third tune-up option is a fuel system cleaning service, which is a three-step process that removes varnish, dirt, and carbon deposits on your Sigma's fuel injectors, throttle body, and throttle plate. The result? Restored fuel system performance. Keep in mind that your Sigma'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. 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 Tune-Up for Your Mitsubishi Sigma

Schedule your next 1990 Sigma engine tune-up service at Firestone Complete Auto Care. Not sure when you’re due for a tune-up? Use Mitsubishi’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, engine knocking, or an illuminated check engine light.

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

1990 Mitsubishi Sigma Engine Tune-Up Q&A

When should Mitsubishi Sigma spark plugs be replaced? 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 Mitsubishi Sigma? 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 hard starts and stops bad for my Mitsubishi Sigma 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 get a Mitsubishi Sigma tune-up? At your closest Firestone Complete Auto Care! Our experienced technicians offer Mitsubishi Sigma service, maintenance, and repairs.
How frequently do the fuel injectors in my Mitsubishi Sigma 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 does Mitsubishi Sigma tune-ups? Your local Firestone Complete Auto Care is happy to help with your Mitsubishi Sigma tune-up. Visit us online to see our latest offers and book an appointment.

Proactive Maintenance - 1990 Mitsubishi Sigma

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

Repairs on Your 1990 Mitsubishi Sigma

Your car takes care of you, and we’ll take care of your car. When it’s time for a repair on your Mitsubishi Sigma, we’re here to help. Check out more info below about 1990 Mitsubishi Sigma repairs.