After mazda 6 12 hot car, the indirect idle speed is unstable, vacillating, and the acceleration is weak.

Cars over 5w kilometers, problems found years later. Then go to a friend's shop to change the gearbox oil, check the oil pump and change the spark plug. This problem remains unsolved. Idle instability occurs at about 2300-3000, which is more than one-fifth of the throttle force. The accelerator pedal only reacts slightly, and the acceleration is still very weak. A few days ago, I bought an air flow meter online, and the acceleration problem has been greatly improved after changing it. However, the traffic light idling tachometer still fluctuates around 150, and the engine is shaking. The situation disappeared after a little refueling. Is there something wrong with the ignition coil or the fuel injector? Cars over 5w kilometers, problems found years later. Then go to a friend's shop to change the gearbox oil, check the oil pump and change the spark plug. This problem remains unsolved. Idle instability occurs at about 2300-3000, which is more than one-fifth of the throttle force. The accelerator pedal only reacts slightly, and the acceleration is still very weak. A few days ago, I bought an air flow meter online, and the acceleration problem has been greatly improved after changing it. However, the traffic light idling tachometer still fluctuates around 150, and the engine is shaking. The situation disappeared after a little refueling. Is there something wrong with the ignition coil or the fuel injector? Typical bad combustion phenomenon, irregular jitter, slight serious jitter, the most obvious feature is that the less fuel in the fuel tank, the more jitter frequency, because these impurities are denser than fuel after the oil circuit is dirty, and then precipitate at the bottom of the fuel tank, which will cause the less fuel, the more obvious jitter. Because the fuel pump sucks in fuel and brings impurities into the combustion chamber, it will shake when it burns badly. The more impurities are pumped into the bottom of the fuel tank. You can try using Sioupu, a special fuel additive for idling jitter. The fuel tank will be obviously improved after running for hundreds of kilometers, and it will be completely improved after three consecutive cleanings. The typical phenomena of poor combustion, irregular jitter and slight jitter are obviously improved every time. The most obvious feature is that the less fuel in the fuel tank, the more frequent jitter, because these impurities are denser than fuel after the oil circuit is dirty, and the less fuel is deposited at the bottom of the fuel tank, the more obvious this phenomenon is. Because the fuel pump sucks in fuel and brings impurities into the combustion chamber, it will shake when it burns badly. The more impurities are pumped into the bottom of the fuel tank. You can try using Sioupu, a special fuel additive for idling jitter. The fuel tank will be obviously improved after running for hundreds of kilometers, and it will be completely improved after three consecutive cleanings, and the improvement is more obvious every time. I also do diy. Oh, I wonder how much it costs to change it. This is related to the serious carbon deposition in the engine. Go to the 4S shop to clean the carbon deposit inside the engine, clean the injector, clean the dirty manifold, remove the carbon deposit layer in the exhaust valve and clean the dirty throttle. After the trip computer is initialized and adjusted, you can see if the idle speed is shaking! It is recommended to clean the throttle of the vehicle every 20-30 thousand kilometers. Support the cleaning method, and initialize the throttle after cleaning. What does an air flow meter do? This situation is actually a complicated problem. To solve this problem, the landlord needs the actual inspection of the maintenance personnel. For older cars, it is suggested that the first choice is to clean the throttle and intake manifold, check the data of gasoline pressure and oxygen sensor, and adjust and replace it. I think you should clean up the carbon deposits. You'd better do engine maintenance. Find the problem and solve it as soon as possible. You can go to the 4s shop to check the engine intake @20 19.