JFranky
BMW 3 Series model year 2007: Symptoms and solutions for mixture control errors
Poor fuel economy
Black smoke from exhaust on acceleration
Jerking on acceleration
Strong exhaust smell
Loss of engine power
Check engine light on
Longer cold start time
(Translated from German)
14 comment(s)
Hello, I'm glad to hear that your BMW is still running well! Such a high mileage on the odometer and still so reliable, that speaks for the quality of BMW. Regarding the problem: I would definitely take a look at the fuel injectors. The lean mixture could be caused by a defective injector. I would also recommend having the error code read out. The engine control light indicates that something is wrong. Perhaps the error code also gives an indication of the problem. If you have any further questions or need help, please let me know! Good luck with your troubleshooting! Best regards!
(Translated from German)
@Luchas13669
I don't know what the problem is, so the RPM fluctuates when cold and the battery only gives 8-9 V until the car is warm, then everything is as if forgotten.
It sounds like you might have an issue with your battery or alternator. A healthy battery should read around 12.6 volts when the engine is off. When the engine is running, this reading should be between 13.7 to 14.7 volts. I'd suggest you to start by checking the battery voltage when the engine is off and when it's running. If the voltage is low, it might be time to replace the battery. If the battery is fine, then the alternator might be the issue. Please update us on your progress.
Hello, for some time I have several error codes recurring (fuel air mixture too lean, gap too high) on my 2016 BMW 1 Series 118i LCI. I have already changed spark plug + coil and the car has -100k km. Would you have a clue to help me in my troubleshooting because an engine light sometimes appears (not permanently) in cold or wet weather. Thanks in advance Have a nice day!
(Translated from French)
@LucTDW
Hello, for some time I have several error codes recurring (fuel air mixture too lean, gap too high) on my 2016 BMW 1 Series 118i LCI.
I have already changed spark plug + coil and the car has -100k km.
Would you have a clue to help me in my troubleshooting because an engine light sometimes appears (not permanently) in cold or wet weather.
Thanks in advance
Have a nice day!
Hi, the error codes you're getting suggest that there might be a vacuum leak or a problem with the Mass Air Flow (MAF) sensor. Start by checking for any obvious signs of vacuum leaks such as hissing sounds, cracked or loose hoses. If you don't find any, you might want to consider having a smoke test done to detect any hidden leaks. If there are no leaks, the MAF sensor might be the issue. It can be cleaned with a special cleaner available at auto parts stores. If cleaning doesn't help, it might need to be replaced. Please keep us updated on your progress.
Best Answer
@Shayan
Hello engine light on I used the Carly diagnostic (poor air fuel mixture) what does it mean?
Hi, a "poor air fuel mixture" code typically means that your engine isn't getting the right ratio of air and fuel. This could be due to a variety of issues such as a faulty oxygen sensor, a leaking fuel injector, a dirty or failing Mass Air Flow (MAF) sensor, or even a vacuum leak. I'd suggest starting with the easiest checks first - inspect the condition of your air filter and clean or replace it if necessary. Then, check for any visible signs of vacuum leaks. If these checks don't resolve the issue, you might need to have a professional mechanic diagnose the problem. Please keep us updated on your progress.
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Hi, I had a similar problem with my 2005 BMW 1 series, I am not a car expert but have some experience with cars. I took it to the garage where they diagnosed a faulty injector. The repair cost me 515 euros. Since then, the car has been running like new again. Can you perhaps provide some more information about your vehicle? Mileage, maintenance history, etc. could be helpful to give you more specific advice. Good luck with your repair!
(Translated from German)