Why does the check engine light come on when I start my Grand Cherokee L?

It's okay if your check engine light comes on when you first start your vehicle. This is just your Grand Cherokee L 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 Grand Cherokee L engine noises bad?

Strange engine sounds can be a sign something’s off in your Jeep Grand Cherokee L. Knocking or tapping could be a symptom of low oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

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

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving the engine while still in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.

Can I use water in my Jeep Grand Cherokee L 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 Grand Cherokee L when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What can cause the engine in my Grand Cherokee L to suddenly stop?

There are different reasons your Grand Cherokee L vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.

Where can I go for Jeep Grand Cherokee L repair?

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

2021 Jeep Grand Cherokee L Engine Repair

Learn about

2021 Jeep Grand Cherokee L Trim Options

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

V6/3.6L

V8/5.7L

Jeep Grand Cherokee L Repairs and Services

Stuff wears out. Even your Jeep Grand Cherokee L's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 2021 Jeep Grand Cherokee L repairs.

We Know Jeep Grand Cherokee L Engines

Jeep Grand Cherokee L drivers trust that their Grand Cherokee L 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! Sometimes plans go sideways. If they do, you’ll have to find a dependable 2021 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 Grand Cherokee L 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.

Check Engine Light on 2021 Jeep Grand Cherokee L

As soon as your Grand Cherokee L check engine light turns on, it’s time to get an expert’s opinion. A steady or flashing check engine light could signal a serious issue with your or emission system, and it won’t go away by ignoring it. Possible causes can include a failing oxygen sensor, worn spark plug, a problem with your catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Bring your Grand Cherokee L in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. rattling sounds, essential fluid leaks, or a sinking feeling that something’s wrong.

Engine Repairs for Your 2021 Grand Cherokee L

When your Jeep Grand Cherokee L engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We don't start working until we have your approval. If a repair can wait, we'll let you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We want to provide you with the information you need to make an informed engine repair decision. Turn to Firestone Complete Auto Care for your 2021 Grand Cherokee L engine repairs and you can drive easy knowing that we use Jeep-approved parts and fluids — serpentine belt, motor oil seal, sensors, or a different component.

Engine Q&A 2021 Jeep Grand Cherokee L

Why does the check engine light come on when I start my Grand Cherokee L? It's okay if your check engine light comes on when you first start your vehicle. This is just your Grand Cherokee L 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 Grand Cherokee L engine noises bad? Strange engine sounds can be a sign something’s off in your Jeep Grand Cherokee L. Knocking or tapping could be a symptom of low oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage a Jeep engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Jeep Grand Cherokee L engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving the engine while still in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.
Can I use water in my Jeep Grand Cherokee L 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 Grand Cherokee L when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What can cause the engine in my Grand Cherokee L to suddenly stop? There are different reasons your Grand Cherokee L vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.
Where can I go for Jeep Grand Cherokee L repair? Your local Firestone Complete Auto Care offers Jeep Grand Cherokee L engine repair. Schedule an appointment today at one of our thousands of locations nationwide!