Fault phenomenon A five cylinder vehicle with displacement of 2.2EaudiCar appearsair conditionerIdle speed does not rise. Fault inspection After inspection, it was concluded that the idle speed control solenoid valve was too dirty, which was greatly improved after cleaning. The function of the solenoid valve was completely restored to normal when it was replaced with a new one. fault analysis audiSedanengineThe working principle of idle control system is:,engineThe slow control unit compares the speed value stored in itself with the engine heatswitchIgnition coil, throttle valveswitch、air conditionerelectromagnetismclutchThe speed value actually felt by the sensing element, and then control the actuating element - idle solenoid valve stepelectric machineryThe current of the pressure plate of the air flow meter increases or decreases, and the pressure plate slightly increases or decreases, so as to control the idle speed. First, we tested all the above mentioned sensing elements and their connecting wires in full accordance with the data and test methods provided in the maintenance manual, and the results were normal;Then use the special instrument multimeter VAG1526, the measuring device VAG1594 and the diode test lamp to measure that the control current of the idle control valve can increase by 50~60mA at the standby speed (800 ± 20r/min), but the idle speed does not meet the requirements (920r/min). Therefore, it is suspected that there is a problem with the idle control valve, which may be a stepelectric machineryIt is caused by slight wear or blockage due to dirt, which narrows the auxiliary air channel.After removing the valve and cleaning it under the action of DC, it was found that there was too much carbon inside. After cleaning and drying, the air conditioning lifting basically returned to normal, and the effect would be better if the solenoid valve was replaced.It can be seen that the fault is caused by too much dirt such as carbon deposit in the air passage of the slow control solenoid valve. The crux of the above fault lies in that although the control current of the valve meets the requirements when the air conditioner is turned on, the increase and stability of idle speed are affected because the channel section of the valve becomes smaller and the valve is slightly jammed.
Related comments:Please consciously abide by relevant Internet policies and regulations, and the author can directly delete malicious comments, advertisements or prohibited words
AutoParts=management software+fax machine+propagator+chain store
AutoParts is an auto parts management software
Auto parts can be used to manage the purchase, sale and storage of accessories. It has comprehensive and professional functions, simple and easy to use, stable performance, never making mistakes, free trialContinuous upgrading and lifelong maintenance
AutoParts is an intelligent fax machine
When the customer sends a price inquiry or order fax through AutoParts, he will immediately receive three prompts: SMS, voice and page. Press the key to automatically receive, fill in the quotation directly and return it quickly (if AutoParts is used to manage the inventory, the inventory can be automatically transferred out for direct quotation, and the order fax can be quickly transferred to the sales order)
AutoParts is a quick publicity device
Through the Auto Parts Service Platform, customers across the country can quickly query their business card information and published parts information (unlimited quantity can be released at any time, customers can directly order the released parts, and orders can be directly converted into sales orders)
Auto Parts is a franchise chain store
Merchants can create their own alliances and set the members who join their own alliances as friends, so that friends can share their inventory information and can query and order at any time.Each member of the Alliance can also publish 100 pieces of recommended parts information for mutual communication and ordering with members of the Alliance
Auto repair=management software+fax machine+searcher+large warehouse
Autorepair is a management software for auto repair and beauty
Auto repair kit can be used for complete management of a series of processes from factory reception, maintenance dispatching, factory settlement, with clear process, simple operation, stable performance, never making mistakes, free trial, continuous upgrade, and lifelong maintenance
Auto repair is an intelligent fax machine
You can use the light speed of auto repair to write a long list of parts price inquiry or order, with pictures and text, and send them by one button.The receiver will immediately receive three prompts: SMS, voice and page
Autorepair is a part finder
When you don't know where to buy difficult parts, you can directly search for merchants through Auto Parts, search for parts directly, and fax group inquiries.In short, auto parts are available, and there are no missing parts
Autorepair is a super large warehouse
Select an alliance from the "Alliance Management" of Autorepair to join, and apply to the business members of the same alliance to set themselves as friends, so that they can have the inventory information of this business (up to 10 friends can have the inventory), which is convenient for query and direct ordering
All rights reserved: Auto Parts 110.com www.qp110.com, professional network platform of automotive aftermarket Huaihua Haoyijian Technology Co., LtdXiang ICP Bei No. 12007470 E-mail:webmast@qp110.com