Why does the check engine light in my D21 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 Nissan D21 engine noises bad?

Unusual noises can signal a problem with your Nissan D21 engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage a Nissan engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Nissan D21 engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or accelerating too quickly, too soon. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I add water to my Nissan D21 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 D21 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What can cause the engine in my D21 to suddenly stop?

There are different reasons your D21 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.

Who can repair my Nissan D21 engine?

Your local Firestone Complete Auto Care offers Nissan D21 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

Engine Repairs for Your 1991 Nissan D21

Learn about

1991 Nissan D21 Trim Options

Select your Nissan D21 trim level to learn more about Nissan-recommended engine repair. Even Nissan D21 parts will get older and change.

L4/2.4L

V6/3.0L

Nissan D21 Repairs and Services

Nothing lasts forever. Even your Nissan D21’s engine parts and components will change. When something breaks or fails, we’re ready to help. Click on a repair below to learn more about 1991 Nissan D21 repairs.

We’re Trained to Care for Nissan D21 Engines

Nissan D21 engines are known for their reliability. That might be why you bought it in the first place. However, the wear-proof engine has yet to be invented! Things can go sideways sometimes. If the unexpected strikes, you may search the internet frantically for quick and affordable 1991 Nissan D21 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 Nissan D21 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 Nissan D21

An illuminated check engine light on your Nissan D21 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 fuel, Possible causes can include a failing oxygen sensor, bad spark plug, a problem with your catalytic converter, or a leaking engine vacuum, to name a few possible causes. Stop by your local Firestone Complete Auto Care to get your D21 issues diagnosed and we’ll figure out why that check engine light is giving you grief. engine rattling, essential fluid leaks, or engine misfiring.

Nissan D21 Engine Repair

When your Nissan D21 engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We never do any work without your sign-off. 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 seek to give you all the info you need to make a smart decision about our services. By choosing Firestone Complete Auto Care for D21 engine repairs and you can feel good knowing that we only use Nissan-compliant replacement parts such as the timing belt, motor oil seal, ignition coil, or another part.

Engine Q&A 1991 Nissan D21

Why does the check engine light in my D21 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 Nissan D21 engine noises bad? Unusual noises can signal a problem with your Nissan D21 engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage a Nissan engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Nissan D21 engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or accelerating too quickly, too soon. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I add water to my Nissan D21 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 D21 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What can cause the engine in my D21 to suddenly stop? There are different reasons your D21 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.
Who can repair my Nissan D21 engine? Your local Firestone Complete Auto Care offers Nissan D21 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!