Paulinelinker Posted September 1 Share Posted September 1 Greetings, everyone. I am experiencing a problem with my E46 (2001). Recently, the engine warning light illuminated. I purchased a code reader and received this code. P0313 Insufficient petrol in the tank. 2. Defective spark plugs and ignition wires 3. Defective injectors 4. Vacuum Leaks 5. Defective Fuel Sender Unit 6. Fuel Sender Unit harness is either open or shorted. 7. Inadequate electrical connection in the fuel sender unit. Frustrated by being overcharged by garages, I decided to do the job myself; while I am not a mechanic, I possess the necessary skills. I began troubleshooting. I replaced the fuel pump. Engine warning light persisted. Replaced the air intake pipe. Engine warning light remained on. Replaced the spark plugs. Engine warning light remained on. Replaced the fuel injectors. Engine warning light remained on. Replaced the Disa valve. At last, there is no engine warning light; but, I am now using double the amount of gasoline, particularly in the lower ratios. I reinstalled the original Disa valve, nevertheless excessive fuel consumption persists. I now comprehend the code. P0102 1. Malfunctioning mass air flow sensor 1. Air intake leaks 2. Contaminated mass air flow sensor 3. Contaminated bulk air filter The mass air flow sensor harness is either open or short-circuited. 5. Inadequate electrical connection in the mass air flow sensor circuit I replaced the whole MAF, however it continues to use excessive gasoline. I am perplexed; I have reviewed all my work and verified everything, only substituting the old with the new, and everything seems OK. Does anybody have any suggestions, please? Unless there is an electrical defect, which seems unlikely as fuel consumption was satisfactory prior to the replacement of any components. I would be grateful for any assistance. Quote Link to comment Share on other sites More sharing options...
clk320x4 Posted September 1 Share Posted September 1 Consuming double the quantity of gasoline is substantial. Is it conceivable that a fuel leak has occurred since the replacement of the injectors and fuel pump? Quote Link to comment Share on other sites More sharing options...
Paulinelinker Posted September 1 Author Share Posted September 1 Thank you for your response. I do not believe it is a fuel leak, since there is no odor of gasoline in the vehicle from the pump, which I would expect given its location under the seat. Although it is sealed by a base plate under the seat, I shall re-enter and examine it. There is unequivocally no leaking from the fuel injectors, as I have inspected for leaks post-drive and detected neither the odor of petrol nor any indications of leakage. The gasoline seems to deplete mostly in lower gears when driving in urban areas; however, while traveling on the A road at around 60-70 mph and at 2500-3000 RPM, the fuel gauge appears accurate. Thank you once again for your response; I will reposition the rear seat and reassess the pump. Quote Link to comment Share on other sites More sharing options...
SkippyTom Posted September 1 Share Posted September 1 A BMW-specific code scanner may be worth considering. Quote Link to comment Share on other sites More sharing options...
CheresX Posted September 1 Share Posted September 1 If it consumes double the amount of gasoline, it would be unpleasant, to say the least. Conduct a smoke test on the intake, followed by an examination of live data to identify any emerging issues. Quote Link to comment Share on other sites More sharing options...
CheresX Posted September 1 Share Posted September 1 😇 Quote Link to comment Share on other sites More sharing options...
cumblechook22 Posted September 3 Share Posted September 3 I used for everyday 98 Quote Link to comment Share on other sites More sharing options...
Auto Car Forum For Everybody
Auto Car Forum For Everybody
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.