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

It’s usually normal for your check engine light to turn on upon ignition. This is just your Sonata testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Are Hyundai Sonata engine noises bad?

Strange under-the-hood noises can point to problems within your Hyundai Sonata engine. Tapping or knocking could mean you need an oil change. 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 my Hyundai Sonata 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 slamming the gas pedal while the engine is still cold. 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 Hyundai Sonata radiator?

While it’s not recommended, you can use water in your Sonata radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.

What can cause a Sonata engine to suddenly stop?

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

Who fixes Hyundai Sonata engines?

For Hyundai Sonata engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.

1991 Hyundai Sonata Engine Repair

Learn about

1991 Hyundai Sonata Trim Options

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

L4/2.4L

V6/3.0L

Repairs for Your 1991 Hyundai Sonata

Nothing lasts forever. Even your Hyundai Sonata’s engine parts and components will change. When something breaks, we're ready. Select a repair or category to learn more about 1991 Hyundai Sonata services.

We Know Hyundai Sonata Engines

The Hyundai Sonata is respected for its reliability. 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 the unexpected strikes, you may search the internet frantically for quick and affordable 1991 Hyundai Sonata engine repairs. Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. We've serviced more than 500 million vehicles since 1926, and our technicians know Hyundai Sonata 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 1991 Hyundai Sonata

As soon as your Sonata check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s on or flashing could be a symptom of a serious problem in your or emission system, and it won’t go away by ignoring it. Causes may include a faulty oxygen sensor, worn spark plug, issues with your catalytic converter, or an engine vacuum leak, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your Sonata issues diagnosed and we'll determine exactly why your check engine light is on. rattling sounds, burning smells, or a sinking feeling that something’s wrong.

Engine Repairs for Your 1991 Sonata

If your 1991 Hyundai Sonata 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. 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. Turn to Firestone Complete Auto Care for your 1991 Sonata engine repairs and you can drive easy knowing that we use Hyundai-approved parts and fluids — cambelt, engine oil seal, sensors, or another part.

Questions About 1991 Hyundai Sonata Engines

Why does the check engine light in my Sonata turn on when I start my car? It’s usually normal for your check engine light to turn on upon ignition. This is just your Sonata testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Are Hyundai Sonata engine noises bad? Strange under-the-hood noises can point to problems within your Hyundai Sonata engine. Tapping or knocking could mean you need an oil change. 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 my Hyundai Sonata 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 slamming the gas pedal while the engine is still cold. 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 Hyundai Sonata radiator? While it’s not recommended, you can use water in your Sonata radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.
What can cause a Sonata engine to suddenly stop? If your Sonata car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Who fixes Hyundai Sonata engines? For Hyundai Sonata engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.