Why does my Comanche’s check engine light come on when I start it?

It’s usually normal for your check engine light to turn on upon ignition. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why is my Jeep Comanche making engine noise?

Strange under-the-hood noises can point to problems within your Jeep Comanche engine. Knocking or tapping could be a symptom of low oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage my Jeep Comanche engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, flooring the gas pedal while the car is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Is it okay to put water in 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.

Why did my Comanche engine suddenly stop?

If your Comanche car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.

Where can I go for Jeep Comanche repair?

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 1991 Jeep Comanche

Learn about

1991 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

Repairs for Your 1991 Jeep Comanche

Nothing stays the same forever. Even your Jeep Comanche’s engine parts and components will change. We’re here to help when something stops working. Click on a repair below to learn more about 1991 Jeep Comanche repairs.

We Know Jeep Comanche Engines

Jeep Comanche drivers trust that their Comanche will take them near and far. You probably thought about that when you got it. Even so, pieces and parts can break down over time. Things can go wrong on the road. If they do, you’ll have to find a dependable 1991 Jeep service center — quick! That's when it's time to head to Firestone Complete Auto Care. 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 is a top choice for professional engine diagnosis, service, and repair at an affordable price.

My 1991 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 steady or flashing check engine light could signal a serious issue with your car’s ignition, Causes may include a faulty oxygen sensor, bad spark plug, a problem with your catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Bring your Comanche in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. engine pinging noises, oil leaks, or engine misfiring.

Engine Repairs for Your 1991 Comanche

If your 1991 Comanche engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We make recommendations, but you make the final decision. If a service can wait, we’ll make sure you know. We'll also tell you if it's necessary for your safety. We seek to give you all the info you need to make a smart decision about our services. By choosing Firestone Complete Auto Care for Comanche engine repairs and you can feel good knowing that we only use Jeep-compliant replacement parts such as the timing belt, oil gasket, ignition coil, or a different component.

Questions About 1991 Jeep Comanche Engines

Why does my Comanche’s check engine light come on when I start it? It’s usually normal for your check engine light to turn on upon ignition. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why is my Jeep Comanche making engine noise? Strange under-the-hood noises can point to problems within your Jeep Comanche engine. Knocking or tapping could be a symptom of low oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage my Jeep Comanche engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, flooring the gas pedal while the car is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Is it okay to put water in 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.
Why did my Comanche engine suddenly stop? If your Comanche car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Where can I go for Jeep Comanche repair? Your local Firestone Complete Auto Care offers Jeep Comanche engine repair. Schedule an appointment today at one of our thousands of locations nationwide!