Symptom: Some vehicles equipped with manual transmissionFiatSiena1.5L orpalio Sedan, step onclutchPedal or neutral sliding, when the accelerator is releasedengineThe speed rises to 2000~4000 r/min. This phenomenon is generally caused byengineThe following methods can be referred to during maintenance due to the failure of the electronic control system. Cause of fault (1): The throttle valve is dirty, which may cause the throttle valve to be not closed tightly or the idle stepper motor to be stuck, which may cause the engine to idle too high. Solution: The throttle valve can be removed for cleaning, and must be adapted after installation. Adaptive method: install all components and wiring, and turn ignitionswitchStay at the ON position for 10s.Turn off the ignitionswitch, switch on the ignition again and start the engine. Cause of fault (2): throttle positionsensorFault.This fault is more obvious when the ambient temperature is high.The reason is the throttle valvesensorThe internal components are unstable, and the wrong throttle opening signal is sent when the temperature rises, which causes the engine idle speed to rise. At this time, the engine speed can reach more than 4000r/min.The throttle opening value can be read by the detector when the engine is idling to help judge whether it is a fault of the throttle position sensor. Solution: The throttle assembly must be replaced. Cause of fault (3): engine controlWire harnessFaults, mainlyWire harnessPoor contact or grounding. Solution: If no fault is found after checking the throttle valve, it can be replacedControl lineBundle.The harness fault point is generally not easy to find, and can be checked by using the replacement method.The electric control system must be adapted after the maintenance. Cause of fault (4): There is a special case that the engine idle speed is high but kept within 1300 r/min, which can be considered as normal.The idle speed of the electronically controlled engine not only depends on the throttle position, but also the idle stepper motor not only works at idle speed, but also steps when the engine is under load or heavy loadelectric machineryThey also participate in engine control.If you pressclutchPedal, the engine control unit will think that the driver's intention is to shift up, and the control unit will send a signal to the stepper motor to keep the engine speed between 1000 and 1300 r/min, so that the engine can work stably. Symptom: Some vehicles equipped with manual transmissionFiatSiena1.5L orpalio For cars, when the vehicle is running, step on the clutch pedal or coast in neutral gear, and when the accelerator is released, the engine speed rises to 2000~4000 r/min. This phenomenon is generally caused by the failure of the engine electronic control system. The following methods can be referred to during maintenance. Cause of fault (1): The throttle valve is dirty, which may cause the throttle valve to be not closed tightly or the idle stepper motor to be stuck, which may cause the engine to idle too high. Solution: The throttle valve can be removed for cleaning, and must be adapted after installation. Adaptive method: install all components and wiring, turn the ignition switch to the ON position and stay for 10s.Turn the ignition off, then turn the ignition back on and start the engine. Cause of failure (2): Throttle position sensor failure.This fault is more obvious when the ambient temperature is high.The reason is that the internal components of the throttle sensor are unstable, and the wrong throttle opening signal is sent when the temperature rises, which leads to the increase of the engine idle speed. At this time, the engine speed can reach more than 4000r/min.The throttle opening value can be read by the detector when the engine is idling to help judge whether it is a fault of the throttle position sensor. Solution: The throttle assembly must be replaced. Fault cause (3): engineControl lineHarness failure is mainly caused by poor harness contact or poor grounding. Solution: If no fault is found after checking the throttle valve, you can consider replacing the control harness.The harness fault point is generally not easy to find, and can be checked by using the replacement method.The electric control system must be adapted after the maintenance. Cause of fault (4): There is a special case that the engine idle speed is high but kept within 1300 r/min, which can be considered as normal.The idle speed of the electronically controlled engine not only depends on the throttle position, but also the idle stepper motor not only works at idle speed, but also steps when the engine is under load or heavy loadelectric machineryThey also participate in engine control.If the clutch pedal is pressed during acceleration, the engine control unit will think that the driver's intention is to shift up, and the control unit will send a signal to the stepper motor to keep the engine speed between 1000 and 1300 r/min, so that the engine can work stably.
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 upgrading, 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