Why does the check engine light come on when I start my LS400?

It’s usually normal for your check engine light to turn on upon ignition. It’s just your LS400 firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why is my Lexus LS400 making engine noise?

Strange under-the-hood noises can point to problems within your Lexus LS400 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 can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage my Lexus LS400 engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.

Can I put water in my Lexus LS400 radiator?

While it’s not recommended, you can use water in your LS400 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.

Why did my LS400 engine suddenly stop?

There are different reasons your LS400 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 fixes Lexus LS400 engines?

Your local Firestone Complete Auto Care has you covered with expert LS400 engine repair. Schedule an appointment today and see us at one of our thousands of locations.

Engine Repairs for Your 1990 Lexus LS400

Learn about

1990 Lexus LS400 Trim Options

Select your Lexus LS400 trim level to learn more about Lexus-recommended engine repair. Use the following chart to find information.

V8/4.0L

1990 Lexus LS400 Repair

Stuff wears out. Even your Lexus LS400's many parts and pieces. When something breaks, we're ready. Select a service or repair below to learn more about what we can do for your 1990 Lexus LS400.

We Know Lexus LS400 Engines

The Lexus LS400 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 1990 Lexus LS400 engine repairs. That's when it's time to head to Firestone Complete Auto Care. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Lexus LS400 engines. Schedule an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

Illuminated Check Engine Light on 1990 Lexus LS400

An illuminated check engine light on your Lexus LS400 is one of the first signs it's time to 'brake' for engine service. A check engine light that’s on or flashing could be a symptom of a serious problem in your or emission control system that won’t go away on its own. Potential causes may include a faulty oxygen sensor, bad spark plug, a problem with your catalytic converter, or a leaking engine vacuum, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your LS400 issues diagnosed and we'll determine exactly why your check engine light is on. Other signs your Lexus LS400 engine needs some TLC are oil leaks, or a sinking feeling that something’s wrong.

Lexus LS400 Engine Repair

If your 1990 LS400 engine needs repairs, our expert techs will let you know what needs to be done and why before they get started. We don't start working until we have your approval. If a service can wait, we’ll make sure 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. Turn to Firestone Complete Auto Care for your 1990 LS400 engine repairs and you can feel confident knowing that we use Lexus-approved parts and components like the cambelt, engine oil seal, sensors, or other parts.

Engine Q&A 1990 Lexus LS400

Why does the check engine light come on when I start my LS400? It’s usually normal for your check engine light to turn on upon ignition. It’s just your LS400 firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why is my Lexus LS400 making engine noise? Strange under-the-hood noises can point to problems within your Lexus LS400 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 can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage my Lexus LS400 engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.
Can I put water in my Lexus LS400 radiator? While it’s not recommended, you can use water in your LS400 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.
Why did my LS400 engine suddenly stop? There are different reasons your LS400 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 fixes Lexus LS400 engines? Your local Firestone Complete Auto Care has you covered with expert LS400 engine repair. Schedule an appointment today and see us at one of our thousands of locations.