Why does the check engine light come on when I start my Comanche?

Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your Comanche firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why does my Jeep engine sound different?

Strange engine sounds can be a sign something’s off in your Jeep Comanche. Tapping or knocking could mean you need an oil change. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage my Jeep Comanche engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I add water to my Jeep Comanche radiator?

An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your Comanche when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What can cause a Comanche engine to suddenly stop?

Reasons your Comanche car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.

Who fixes Jeep Comanche engines?

Your local Firestone Complete Auto Care offers Jeep Comanche engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

Engine Repairs for Your 1990 Jeep Comanche

Learn about

1990 Jeep Comanche Trim Options

Select your Jeep Comanche trim level to learn more about Jeep-recommended engine repair. Use the following chart to find information.

L4/2.5L

L6/4.0L

1990 Jeep Comanche Repair

Nothing lasts forever. Even your Jeep Comanche's many parts and pieces. When something breaks, we're ready. Select a repair or category to learn more about 1990 Jeep Comanche services.

We Care for Jeep Comanche Engines

Jeep Comanche drivers trust that their Comanche will take them near and far. That might be why you bought it in the first place. However, the wear-proof engine has yet to be invented! Things can go sideways sometimes. When they do, you might find yourself searching for 1990 Jeep Comanche engine repair or replacement parts. That’s where Firestone Complete Auto Care comes in. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your Jeep Comanche engine will be in good hands. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

My 1990 Jeep Comanche Check Engine Light Is On

An illuminated check engine light on your Jeep Comanche is one of the first signs it's time to 'brake' for engine service. A check engine light that’s on or flashing could be a symptom of a serious problem in your or emission control system that won’t go away on its own. Potential causes may include a faulty oxygen sensor, bad spark plug, a clogged catalytic converter, or an engine vacuum leak, but that's only a few of the possible causes. Bring your Comanche in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. Other signs your Jeep Comanche engine needs some TLC are essential fluid leaks, or engine misfiring.

1990 Comanche Engine Services

If your 1990 Comanche engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We never do any work without your sign-off. If a repair isn’t urgent right now, we’ll let you know. We'll also tell you if it's necessary for your safety. We want to give you all the details you need to make an informed decision about your engine repairs. Choose Firestone Complete Auto Care for Jeep Comanche engine repairs and you can feel confident knowing that we use Jeep-approved parts and components like the timing belt, motor oil seal, sensors, or a different component.

Engine Q&A 1990 Jeep Comanche

Why does the check engine light come on when I start my Comanche? Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your Comanche firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why does my Jeep engine sound different? Strange engine sounds can be a sign something’s off in your Jeep Comanche. Tapping or knocking could mean you need an oil change. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage my Jeep Comanche engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I add water to my Jeep Comanche radiator? An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your Comanche when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What can cause a Comanche engine to suddenly stop? Reasons your Comanche car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who fixes Jeep Comanche engines? Your local Firestone Complete Auto Care offers Jeep Comanche engine repair. Schedule an appointment today at one of our thousands of locations nationwide!