What happens if my Jeep Wrangler spark plugs fail?

When it’s time to replace the spark plugs, don’t delay. These small (but vital!) parts provide the electric spark that your car needs in order to start, and old spark plugs can prevent your car from starting at all. Replace spark plugs on time or about every 30,000 miles or so.

What do I do if I see a pool of liquid under my Jeep Wrangler?

Don't ignore puddles of fluid under your Jeep Wrangler. 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 Jeep Wrangler 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 get a Jeep Wrangler tune-up?

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

How often should I clean my Jeep Wrangler 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 Jeep Wrangler tune-ups?

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

1990 Jeep Wrangler Engine Tune-Ups & Maintenance

Get a Tune-Up

Schedule Jeep Wrangler Tune-Up

If your Wrangler 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-Ups to Help Your Jeep Wrangler Run Better

Is your engine overdue for a tune-up? If you tend to ignore your car until something goes wrong, it could be time for a new way of doing things, particularly if you want to keep your 1990 Jeep Wrangler in tip-top shape. Routine engine tune-ups can bring power back to your Wrangler. Tune-ups help your engine start smoothly and run efficiently, so you can enjoy improved fuel economy and lower emissions. When you get routine engine tune-ups based on Jeep's recommendations, you’re taking vital steps toward keeping your Wrangler’s engine running smoother, longer.

Engine Tune-Up for Jeep Wrangler

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 1990 Jeep Wrangler. The first 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*. A second service option replaces the air and fuel filter in your Wrangler. Yet another service is a fuel system cleaning process, which involves removing varnish, dirt, and carbon deposits that have built up inside the fuel injectors, throttle body, and throttle plate in your Wrangler. The result? Restored fuel system performance. Keep in mind that your Wrangler'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 Jeep Wrangler

Schedule your next 1990 Wrangler engine tune-up service at Firestone Complete Auto Care. Consult your vehicle’s recommended service schedule from Jeep, or make a service appointment if you notice any of these symptoms from your engine: shaking while the engine is idling, poor fuel economy, an illuminated check engine light on your dashboard, or a knocking sound when the engine is running.

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

Questions About 1990 Jeep Wrangler Engine Tune-Ups

What happens if my Jeep Wrangler spark plugs fail? When it’s time to replace the spark plugs, don’t delay. These small (but vital!) parts provide the electric spark that your car needs in order to start, and old spark plugs can prevent your car from starting at all. Replace spark plugs on time or about every 30,000 miles or so.
What do I do if I see a pool of liquid under my Jeep Wrangler? Don't ignore puddles of fluid under your Jeep Wrangler. 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 Jeep Wrangler 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 get a Jeep Wrangler tune-up? At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair Jeep Wranglers.
How often should I clean my Jeep Wrangler 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 Jeep Wrangler tune-ups? Your local Firestone Complete Auto Care is happy to help with your Jeep Wrangler tune-up. Visit us online to see our latest offers and book an appointment.

Proactive Maintenance - 1990 Jeep Wrangler

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

1990 Jeep Wrangler Repair

Your Jeep Wrangler 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 1990 Jeep Wrangler repairs below.