Why does my 735i’s check engine light come on when I start it?

It’s usually normal for your check engine light to turn on upon ignition. This is just your 735i testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why does my BMW engine sound different?

Strange engine sounds can be a sign something’s off in your BMW 735i. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage my BMW 735i engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, 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 add water to my BMW 735i 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.

What could cause my 735i engine 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 can repair my BMW 735i engine?

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.

Reliable Repairs for 1986 BMW 735i Engines

Learn about

1986 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

BMW 735i Repairs and Services

Nothing stays the same forever. Even your BMW 735i’s engine parts and components will change. When something breaks or fails, we’re ready to help. Select a service or repair below to learn more about what we can do for your 1986 BMW 735i.

We’re Trained to 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. Even so, pieces and parts can break down over time. Sometimes plans go sideways. When they do, you might find yourself searching for 1986 BMW 735i engine repair or replacement parts. That’s where Firestone Complete Auto Care comes in. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your BMW 735i engine will be in good hands. If you think something’s wrong with your engine, schedule an appointment at your convenience. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

My 1986 BMW 735i Check Engine Light Is On

An illuminated check engine light on your BMW 735i is one of the first signs it's time to 'brake' for engine service. A steady or flashing check engine light could signal a serious issue with your or emission system that won't go away on its own. Causes may include a faulty oxygen sensor, worn spark plug, a clogged catalytic converter, or a leaking engine vacuum, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your 735i issues diagnosed and we'll determine exactly why your check engine light is on. engine pinging noises, essential fluid leaks, or a sinking feeling that something’s wrong.

BMW 735i Engine Repair

If your 1986 BMW 735i 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 repair can wait, we'll let you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We seek to give you all the info you need to make a smart decision about our services. Turn to Firestone Complete Auto Care for your 1986 735i engine repairs and you can feel good knowing that we only use BMW-compliant replacement parts such as the cambelt, engine oil seal, sensors, or a different component.

Engine Q&A 1986 BMW 735i

Why does my 735i’s check engine light come on when I start it? It’s usually normal for your check engine light to turn on upon ignition. This is just your 735i testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why does my BMW engine sound different? Strange engine sounds can be a sign something’s off in your BMW 735i. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage my BMW 735i engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, 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 add water to my BMW 735i 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.
What could cause my 735i engine 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 can repair my BMW 735i engine? 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.