Why does the check engine light in my Bonneville 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 Pontiac Bonneville engine noises bad?

Strange under-the-hood noises can point to problems within your Pontiac Bonneville engine. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. 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?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I put water in 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?

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?

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

Reliable Repairs for 1991 Pontiac Bonneville Engines

Learn about

1991 Pontiac Bonneville Trim Options

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

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 or fails, we’re ready to help. Click on a repair below to learn more about 1991 Pontiac Bonneville repairs.

We’re Trained to Care for Pontiac Bonneville Engines

Pontiac Bonneville engines are known for their reliability. You probably thought about that when you got it. However, the wear-proof engine has yet to be invented! Things can go sideways sometimes. When they do, you might find yourself searching for 1991 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 more than 500 million vehicles since 1926, and our technicians know Pontiac Bonneville engines. Schedule an appointment if you're experiencing problems that could require engine repair. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

Illuminated Check Engine Light on 1991 Pontiac Bonneville

As soon as your Bonneville check engine light turns on, it’s time to get an expert’s opinion. A steady or flashing check engine light could signal a serious issue with your or emission control system that won’t go away on its own. Possible causes can include a failing oxygen sensor, worn spark plug, a clogged catalytic converter, or a leak in the engine vacuum, but that's only a few of the possible causes. Bring your Bonneville in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. Other signs it's time for Pontiac Bonneville engine service might include burning smells, or misfiring.

Pontiac Bonneville Engine Repair

When your Pontiac Bonneville engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We don't start working until we have your approval. If a repair isn’t urgent right now, we’ll let you know. If it's necessary for your safety, we'll make sure you understand that, too. 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 1991 Bonneville engine repairs and you can feel confident knowing that we use Pontiac-approved parts and components like the timing belt, motor oil seal, fuses, or another part.

1991 Pontiac Bonneville Engine Q&A

Why does the check engine light in my Bonneville 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 Pontiac Bonneville engine noises bad? Strange under-the-hood noises can point to problems within your Pontiac Bonneville engine. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. 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? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I put water in 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? 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? Your local Firestone Complete Auto Care has you covered with expert Bonneville engine repair. Schedule an appointment today and see us at one of our thousands of locations.