Why does the check engine light in my Wrangler turn on when I start my car?

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 dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Are Jeep Wrangler engine noises bad?

Strange engine sounds can be a sign something’s off in your Jeep Wrangler. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage a Jeep engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Jeep Wrangler engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I put water in my Jeep Wrangler radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

What can cause a Wrangler engine to suddenly stop?

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

Who can repair my Jeep Wrangler engine?

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

1991 Jeep Wrangler Engine Repair

Learn about

1991 Jeep Wrangler Trim Options

Select your Jeep Wrangler trim level to learn more about Jeep-recommended engine repair. Even Jeep Wrangler parts will get older and change.

L4/2.5L

L6/4.0L

Repairs for Your 1991 Jeep Wrangler

Stuff wears out. Even your Jeep Wrangler’s engine parts and components will change. When something breaks, we're ready. Click on a repair below to learn more about 1991 Jeep Wrangler repairs.

We Know Jeep Wrangler Engines

Jeep Wrangler engines are known for their reliability. You probably thought about that when you got it. However, the wear-proof engine has yet to be invented! Sometimes plans go sideways. If they do, you’ll have to find a dependable 1991 Jeep service center — quick! Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Jeep Wrangler engines. 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.

Illuminated Check Engine Light on 1991 Jeep Wrangler

If your Wrangler check engine light is on, it’s time to get it looked at. A check engine light that’s flashing or steadily illuminated could point to problems with your fuel injection, Causes may include a faulty oxygen sensor, worn spark plug, a problem with your catalytic converter, or an engine vacuum leak, to name a few possible causes. Stop by your local Firestone Complete Auto Care to get your Wrangler issues diagnosed and we'll determine exactly why your check engine light is on. rattling sounds, burning smells, or misfiring.

1991 Wrangler Engine Services

If your 1991 Jeep Wrangler needs engine repair, our technicians will provide you with a thorough explanation beforehand. We don't start working until we have your approval. If a repair can wait, we'll let you know. If it's necessary for your safety, we'll make sure you understand that, too. We want to give you all the details you need to make an informed decision about your engine repairs. By choosing Firestone Complete Auto Care for Wrangler engine repairs and you can drive easy knowing that we use Jeep-approved parts and fluids — timing chain or belt, valve guide seal, fuses, or other parts.

1991 Jeep Wrangler Engine Q&A

Why does the check engine light in my Wrangler turn on when I start my car? 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 dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Are Jeep Wrangler engine noises bad? Strange engine sounds can be a sign something’s off in your Jeep Wrangler. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage a Jeep engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Jeep Wrangler engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I put water in my Jeep Wrangler radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
What can cause a Wrangler engine to suddenly stop? Reasons your Wrangler car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who can repair my Jeep Wrangler engine? Your local Firestone Complete Auto Care offers Jeep Wrangler engine repair. Schedule an appointment today at one of our thousands of locations nationwide!