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

It’s usually normal for your check engine light to turn on upon ignition. This is just your Bonneville testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why does my Pontiac engine sound different?

Unusual noises can signal a problem with your Pontiac Bonneville engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

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 slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I add water to my Pontiac Bonneville radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

Why did my Bonneville engine suddenly stop?

If your Bonneville 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 Pontiac Bonneville engines?

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 1989 Pontiac Bonneville Engines

Learn about

1989 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 stays the same forever. Even your Pontiac Bonneville'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 1989 Pontiac Bonneville.

We Know Pontiac Bonneville Engines

The Pontiac Bonneville is respected for its reliability. That might be why you bought it in the first place. However, even your trustworthy engine is subject to wear and tear. Things can go wrong on the road. When they do, you might find yourself searching for 1989 Pontiac Bonneville engine repair or replacement parts. Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Pontiac Bonneville 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 1989 Pontiac Bonneville

As soon as your Bonneville 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 fuel, Potential causes may include a faulty oxygen sensor, worn spark plug, a problem with your catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Bring your Bonneville to Firestone Complete Auto Care to get computerized diagnostics and we'll determine exactly why your check engine light is on. rattling sounds, essential fluid leaks, or engine misfiring.

1989 Bonneville Engine Services

If your 1989 Bonneville engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. 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 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 feel good knowing that we only use Pontiac-compliant replacement parts such as the cambelt, engine oil seal, fuses, or another part.

1989 Pontiac Bonneville Engine Q&A

Why does the check engine light come on when I start my Bonneville? It’s usually normal for your check engine light to turn on upon ignition. This is just your Bonneville testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why does my Pontiac engine sound different? Unusual noises can signal a problem with your Pontiac Bonneville engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
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 slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I add water to my Pontiac Bonneville radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
Why did my Bonneville engine suddenly stop? If your Bonneville 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 Pontiac Bonneville engines? 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.