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

Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your Grand Cherokee firing up 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 engine noises bad?

Unusual noises can signal a problem with your Jeep Grand Cherokee engine. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage my Jeep Grand Cherokee engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.

Can I use water in my Jeep Grand Cherokee radiator?

It’s not recommended you put water in your Grand Cherokee radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.

What can cause a Grand Cherokee engine to suddenly stop?

Your Grand Cherokee car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who fixes Jeep Grand Cherokee engines?

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

Reliable Repairs for 2012 Jeep Grand Cherokee Engines

Learn about

2012 Jeep Grand Cherokee Trim Options

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

V6/3.6L

V8/5.7L

V8/6.4L

2012 Jeep Grand Cherokee Repair

Nothing stays the same forever. Even your Jeep Grand Cherokee’s engine parts and components will change. When something breaks or fails, we’re ready to help. Select a repair or category to learn more about 2012 Jeep Grand Cherokee services.

We’re Trained to Care for Jeep Grand Cherokee Engines

Jeep Grand Cherokee drivers trust that their Grand Cherokee will take them near and far. You may have even been thinking about that when you bought it. However, the wear-proof engine has yet to be invented! Things can go sideways sometimes. When they do, you might find yourself searching for 2012 Jeep Grand Cherokee engine repair or replacement parts. That’s where Firestone Complete Auto Care comes in. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Jeep Grand Cherokee engines. If you think something’s wrong with your engine, schedule an appointment at your convenience. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Illuminated Check Engine Light on 2012 Jeep Grand Cherokee

An illuminated check engine light on your Jeep Grand Cherokee is one of the first signs it's time to 'brake' for engine service. A check engine light that’s flashing or steadily illuminated could point to problems with your car’s starter, Potential causes may include a faulty oxygen sensor, worn spark plug, issues 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 Grand Cherokee issues diagnosed and we'll determine exactly why your check engine light is on. rattling sounds, oil leaks, or a sinking feeling that something’s wrong.

2012 Grand Cherokee Engine Services

If your 2012 Jeep Grand Cherokee needs engine repair, our expert techs will let you know what needs to be done and why before they get started. 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 provide you with the information you need to make an informed engine repair decision. Choose Firestone Complete Auto Care for Jeep Grand Cherokee engine repairs and you can feel confident knowing that we use Jeep-approved parts and components like the serpentine belt, oil gasket, fuses, or another part.

Engine Q&A 2012 Jeep Grand Cherokee

Why does my Grand Cherokee’s check engine light come on when I start it? Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your Grand Cherokee firing up 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 engine noises bad? Unusual noises can signal a problem with your Jeep Grand Cherokee engine. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage my Jeep Grand Cherokee engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.
Can I use water in my Jeep Grand Cherokee radiator? It’s not recommended you put water in your Grand Cherokee radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.
What can cause a Grand Cherokee engine to suddenly stop? Your Grand Cherokee car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who fixes Jeep Grand Cherokee engines? Your local Firestone Complete Auto Care offers Jeep Grand Cherokee engine repair. Schedule an appointment today at one of our thousands of locations nationwide!