Mr. Peng is a businessman and he usually drives in the wind. Every time you get on the train, you insert the key, turn it in place, and start it on fire. Recently, he found that it was difficult to start the car. It took a few fires to start. Sometimes, on a business trip, the car has been in the garage for a long time and it needs to be played more often. Even after the start was successful, I felt that the momentum was lower than before and I felt obviously soft when I walked the ramp. After excluding the air conditioning, the factors that affected the power, he suspected that the engine had a problem. He sent the car to the 4S store for repair several times. The maintenance staff did not find any problems.

Expert diagnosis: The problem lies in the way the key ignites. Most people are accustomed to inserting a key and immediately start a fire. In fact, this is incorrect. Even the now popular one-button startup system cannot immediately start to fire, otherwise it will hurt the engine.

This is due to the fact that the engine is still in a cool state, especially for vehicles with long parking time. The operating parameters of the engine are completely different from the previous day's thermal state. Each sensor needs to be readjusted. If the key is inserted, the engine's operating parameters If it is abnormal raw data, there will be a startup failure or multiple startup failures. Even if it starts successfully, it will cause excessive fuel consumption or engine overheating. Because the computer has automatic memory function, in the long run, the wrong data will overwrite the correct data, eventually resulting in soft failures such as weak climbing, high fuel consumption, serious carbon deposition, and overheating of the engine. This type of fault is difficult to find and determine, even if overhauling the engine cannot eliminate the fault.

The correct ignition method is: insert the key to rotate to ACC to stop, wait about 2-3 seconds, let the main power relay contacts make a steady contact, let the first part needs to energize the device power; continue to turn the key to ON, then stop waiting 6-10 seconds, let the oil pump relay pull, wait for each sensor to adjust the state is completed, turn the key to START until the engine continues to run back to the ON position, under the guidance of the computer, automatically adjust an optimal position and degree The best parameters were to successfully start the engine. However, for temporary or short-term parking without pause, simply observe that the yellow indicator light on the instrument panel is extinguished and you can start quickly.

Twist the key off hard

The key to the car was twisted but he couldn't move it. He tried a little harder and he did not expect to break the key. Speaking of this matter, Miss Li, the owner of the vehicle, was depressed. According to her, on the last Thursday she drove to the garage and inserted the key but she couldn't move it. I twisted it and the key was broken. As there was an urgent need to meet an important customer at the time, the car could not be locked. Instead, he had to call the customer to make an apology. Then he called for assistance all the time, which made him uneasy. If it wasn't afterwards, he almost lost the customer. .

Expert diagnosis: This can't be turned with the steering wheel is a truth, you need to retreat into, twist the key to turn in the opposite direction. Therefore, if the insert key cannot be rotated, do not twist it with force. You can turn the steering wheel while turning the key to easily solve the problem.

The key does not go back to burning the engine

Under normal circumstances, after inserting the key, the key will return to the "ON" position. However, the modified keys may not return. Mr. Zhou encountered such a thing. A few days ago, he inserted the key to start the fire after the fire, did not think the car issued a "bang" sound, not ten seconds, he smelled a smell of coke, but also saw a group of blue smoke. At first, he thought he was ignited and rushed off, but he was not burned. Unknown he requested 4S shop rescue. After being inspected, he was informed that his car key was modified and did not match the driving computer. Occasionally, there was a phenomenon of no rebound after ignition. If the owner did not pay attention to observation, it would cause engine failure.

Expert diagnosis: When you use a key to light the fire, please remember the following: Do not turn the key to the START position after the fire, and do not use the processed key. Otherwise, the key cannot automatically return to the “ON” position after ignition, and the starter continues to rotate, causing the starter to be damaged or causing a fire due to heavy load; the ignition switch must not be in the START position for more than 10 seconds. If the engine is not started for the first time, wait for at least 30 seconds before starting it again. Never set the ignition switch to the LOCK or ACC position while driving. This can cause the steering wheel, brake and power steering system to fail. This is dangerous.

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