Analyze the cause
    In response to this situation, "Yang physician" explained: Summary There are two general problems may need to focus: First, EACV system is faulty. The engine model is F22A4, the use of EACV (electronic idle air control valve) to control the idle, that is, when the role of cold air compressor, or transmission file, or heavy load generator, the computer to control the EACV, Improve the engine speed, so that the engine to maintain normal idle operation. If the vehicle "CHECK" fault warning light is normal, indicating that the EACV circuit is normal, otherwise the computer will record the fault code 14. So should focus on checking the EACV valve itself is blocked or card. Two may also be too much refrigerant filling. Respond to the refrigerant pressure of the air conditioning system to check whether it is within the standard value range. If the refrigerant filling too much will cause idling shaking.
    The right medicine
    "Yang physician" suggested that through the EACV valve and refrigerant pressure detection, should be excluded from the engine trembling failure, or must be overhauled on the engine.
    1. Check the engine with a fault, the engine failure light "CHECK" is normal, if normal, remove the EACV valve, check the inlet filter is blocked. If necessary, to clean, dry after the fumigation battery 12V power supply to the EACV valve at both ends of the terminal power to confirm whether the EACV valve switch is working well, install the complex, the test should be ruled out the fault.
    2. If the refrigerant pressure exceeds the normal value, the refrigerant should be released to bring its pressure to the normal range. You can also accelerate the throttle to 3000 rpm, suddenly release the throttle, then the engine speed suddenly fell and accompanied by shaking, which may be too much refrigerant filling.