Will it hurt my Jeep Comanche to drive with old spark plugs?

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 does a puddle underneath my Jeep Comanche mean?

Don't ignore puddles of fluid under your Jeep Comanche. 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 Comanche engine than others?

Hard starts and stops put extra wear and tear on engine components. Smooth, gradual starts and stops, on the other hand, are a great way to help your engine run better. They can also help maximize your fuel economy.

Where can I get a tune-up for my Jeep Comanche?

At your nearby Firestone Complete Auto Care! Whether you need Jeep Comanche service, maintenance, or repairs, our technicians can get the job done.

How often do Jeep Comanche fuel injectors need to be cleaned?

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 can I go to for Jeep Comanche tune-ups?

When your Comanche needs a tune-up, head to your local Firestone Complete Auto Care. Check out our latest offers to save on your service and schedule an appointment online.

1990 Jeep Comanche Tune-Up & Engine Service

Get a Tune-Up

Schedule Jeep Comanche Tune-Up

Tune in to tune up. Listen to your Comanche 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 Jeep Comanche

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 want your 1990 Jeep Comanche’s engine to last for a long time. Periodic tune-ups can bring more power back to your Comanche’s engine. 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 invest in your Comanche's long-term health and engine performance.

Jeep Comanche Engine Tune-Up Services

The Firestone Complete Auto Care location in your community offers several Jeep Comanche engine tune-up services. One option is the standard Firestone Tune-Up. 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 Comanche. Specifically, we replace the fuel filter and air 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 Comanche's fuel injectors, throttle body, and throttle plate. This goes a long way in boosting your fuel system’s overall performance. Here’s something to remember when choosing services: the mileage and service history of your Comanche can determine what kind of service it needs. This means that a tune-up service that’s a great fit for another car may not be optimal for yours. Chat with a Firestone technician before you jump into a specific service to ensure your engine tune-up money is well-spent.

Where to Get a Jeep Comanche Tune-Up

If you’re looking for 1990 Comanche engine tune-up services, head to Firestone Complete Auto Care. Follow Jeep'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, 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.

1990 Jeep Comanche Engine Tune-Up Q&A

Will it hurt my Jeep Comanche to drive with old spark plugs? 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 does a puddle underneath my Jeep Comanche mean? Don't ignore puddles of fluid under your Jeep Comanche. 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 Comanche engine than others? Hard starts and stops put extra wear and tear on engine components. Smooth, gradual starts and stops, on the other hand, are a great way to help your engine run better. They can also help maximize your fuel economy.
Where can I get a tune-up for my Jeep Comanche? At your nearby Firestone Complete Auto Care! Whether you need Jeep Comanche service, maintenance, or repairs, our technicians can get the job done.
How often do Jeep Comanche fuel injectors need to be cleaned? 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 can I go to for Jeep Comanche tune-ups? When your Comanche needs a tune-up, head to your local Firestone Complete Auto Care. Check out our latest offers to save on your service and schedule an appointment online.

Proactive Maintenance - 1990 Jeep Comanche

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

Repairs on Your 1990 Jeep Comanche

Your Jeep Comanche 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 Comanche repairs below.