Why does the check engine light in my 735i turn on when I start my car?

It's okay if your check engine light comes on when you first start your vehicle. This is a sign that your vehicle is testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Are BMW 735i engine noises bad?

Strange under-the-hood noises can point to problems within your BMW 735i 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 be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage my BMW 735i engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel 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 add water to my BMW 735i 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 735i when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What can cause the engine in my 735i to suddenly stop?

Your 735i car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who repairs BMW 735i engines?

For BMW 735i 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.

1991 BMW 735i Engine Repair

Learn about

1991 BMW 735i Trim Options

Select your BMW 735i trim level to learn more about BMW-recommended engine repair. Use the following chart to find information.

L6/3.5L

Repairs for Your 1991 BMW 735i

Nothing lasts forever. Even your BMW 735i’s engine parts and components will change. We’re here to help when something stops working. Select a repair or category to learn more about 1991 BMW 735i services.

We Care for BMW 735i Engines

BMW 735i drivers trust that their 735i will take them near and far. 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. If they do, you’ll have to find a dependable 1991 BMW service center — quick! That’s where Firestone Complete Auto Care comes in. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service BMW 735i 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.

Check Engine Light on 1991 BMW 735i

An illuminated check engine light on your BMW 735i 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. Possible causes can include a failing oxygen sensor, damaged spark plug, issues with your catalytic converter, or a leaking engine vacuum, to name a few potential sources. Bring your 735i in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. engine pinging noises, oil leaks, or misfiring.

1991 735i Engine Services

If your 1991 735i engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We make recommendations, but you make the final decision. If a repair isn’t urgent right now, we’ll let you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We want to give you all the details you need to make an informed decision about your engine repairs. Turn to Firestone Complete Auto Care for your 1991 735i engine repairs and you can feel good knowing that we only use BMW-compliant replacement parts such as the timing belt, engine oil seal, fuses, or another part.

Engine Q&A 1991 BMW 735i

Why does the check engine light in my 735i turn on when I start my car? It's okay if your check engine light comes on when you first start your vehicle. This is a sign that your vehicle is testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Are BMW 735i engine noises bad? Strange under-the-hood noises can point to problems within your BMW 735i 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 be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage my BMW 735i engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel 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 add water to my BMW 735i 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 735i when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What can cause the engine in my 735i to suddenly stop? Your 735i car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who repairs BMW 735i engines? For BMW 735i 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.