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How many oxygen sensors does the new BMW 5 Series 520 have? How many computers?
I went to the 4S store for a field inspection and found a serious flaw. The space of this car is too small, and the headroom in the front row is also small. If the backrests of the front driver and passenger seats are folded back a bit (the passenger seat cannot be adjusted in height, so this is the only way), the headroom is sufficient, but the legroom in the back row is very narrow and rough. Is this car only designed for people under 1.8 meters? Matched with Hongqi car, there are 9 computer numbers: 9000-9080. Among them, 9000-9030 is open-loop control and does not have an oxygen sensor; 9040-9080 is a closed-loop control system. For vehicles with the 9040-9080 computer number, if the idle speed is too high after cleaning the throttle body, X431 can be used. Select [Control Unit Code] and change the engine control computer code from [0000] to [0001] or [0001] to [0000]. The [Control Unit Code] is usually one of 00000, 00001~00007, as long as you include a different code from the original control unit, but the value of the code is limited to 00000~00007. But this method can only be executed once, and if it has been changed before, this change will be invalid (this phenomenon is caused by a design defect in Hongqi Car Electric Rock). At this point, the following three methods should be used (applicable to all Red Flag vehicles):
(1) First, loosen the intake hose clamp behind the air flow meter to allow a large amount of air to leak between the intake hose and the air flow meter. Due to the lean mixture, the idle speed will decrease. By controlling the amount of air leakage, the idle speed is maintained at around 860r/min (n
(2) Remove an auxiliary pipe from the intake pipe, connect the decoder, open the option that shows the idle adaptive mode (such as channel 01), start the engine, manually control the amount of air that does not pass through the air flow meter until the adjustment value drops to around 0.95, turn off the engine, install the auxiliary pipe, start the engine again, and observe the X-431 adaptive value. If it is not normal, try again.
(3) Remove the intake pipe clip, intentionally leak a little air, and then try to add a few more liters of oil every 4 seconds with a small throttle.
2. What does the Audi A6l00473 fault code mean??
Audi A6L00473 fault code means computer digital board malfunction. The engine malfunction light is usually detected by computer fault codes due to the following reasons: (1) oil quality issues; (2) The throttle valve is dirty; (3) When the cylinder is not working properly, check and replace the spark plug and cylinder pipeline; (4) Water temperature sensor malfunction; (5) Malfunctions in oxygen transmission and disassembly sensors, air flow meters, variable valve solenoid valves, and thre
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