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

Generally, your check engine light turning on upon ignition is not a bad thing. 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 Pontiac Bonneville engine noises bad?

Strange under-the-hood noises can point to problems within your Pontiac Bonneville engine. Knocking or tapping could be a symptom of low oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage a Pontiac engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Pontiac Bonneville 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 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 put water in my Pontiac Bonneville radiator?

It’s not recommended you put water in your Bonneville 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 could cause my Bonneville engine to suddenly stop?

There are different reasons your Bonneville 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 Pontiac Bonneville repair?

For Pontiac Bonneville 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.

Reliable Repairs for 1999 Pontiac Bonneville Engines

Learn about

1999 Pontiac Bonneville Trim Options

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

V6/3.8L

Pontiac Bonneville Repairs and Services

Nothing lasts forever. Even your Pontiac Bonneville’s engine parts and components will change. When something breaks, we're ready. Select a repair or category to learn more about 1999 Pontiac Bonneville services.

We Care for Pontiac Bonneville Engines

Pontiac Bonneville 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! Sometimes plans go sideways. If they do, you’ll have to find a dependable 1999 Pontiac service center — quick! Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your Pontiac Bonneville engine will be in good hands. 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.

Check Engine Light on 1999 Pontiac Bonneville

An illuminated check engine light on your Pontiac Bonneville 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 fuel, Possible causes can include a failing oxygen sensor, worn spark plug, issues 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 Bonneville issues diagnosed and our expert techs will get the root of the problem. Other signs your Pontiac Bonneville engine needs some TLC are essential fluid leaks, or engine misfiring.

Pontiac Bonneville Engine Repair

If your 1999 Pontiac Bonneville needs engine repair, our expert techs will let you know what needs to be done and why before they get started. We make recommendations, but you make the final decision. If a service can wait, we’ll make sure you know. We'll also tell you if it's necessary for your safety. 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 Bonneville engine repairs and you can drive easy knowing that we use Pontiac-approved parts and fluids — timing chain or belt, motor oil seal, sensors, or other parts.

Engine Q&A 1999 Pontiac Bonneville

Why does the check engine light in my Bonneville turn on when I start my car? Generally, your check engine light turning on upon ignition is not a bad thing. 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 Pontiac Bonneville engine noises bad? Strange under-the-hood noises can point to problems within your Pontiac Bonneville engine. Knocking or tapping could be a symptom of low oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage a Pontiac engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Pontiac Bonneville 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 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 put water in my Pontiac Bonneville radiator? It’s not recommended you put water in your Bonneville 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 could cause my Bonneville engine to suddenly stop? There are different reasons your Bonneville 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 Pontiac Bonneville repair? For Pontiac Bonneville 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.