Record the whole process of 2009 Fox upgrade calibration software.
On May 31st, 2010, it was officially announced that 236,643 09 models would be recalled due to the possibility of flameout at low speed. In this matter, we contacted Changan Ford according to the recall maintenance items that netizens are concerned about and the problems that need time and later use, and recently went to a 4S shop in Changan Ford in Beijing to make a full report on the handling method of Fox recalled vehicles, and consulted with the after-sales staff in the store. In the following, I will give you a detailed report.
This recall of’ 09 Focus will mainly upgrade the version of PCM electronic control program for vehicles to improve the problem of flameout under low load. TCM (Transmission Computer) system will also be upgraded for automatic transmission models to improve the unstable speed when parking or starting.
I. Record of relevant data before vehicle maintenance
From the discussion in the current domestic auto forum, we know that Fox owners are mainly concerned about whether they will increase the idle speed of vehicles to control the flameout when upgrading the calibration software. Will fuel consumption increase? This time, the editor dedicated his own car (09 Focus 1.8AT models produced in March 2010 within the scope of recall) to do this "meat cutting test".
The above picture shows the idling situation of parking P gear before upgrading before entering the repair shop. It can be seen from the picture that before the upgrade, it was 800 rpm.
From the signboard on the left side of the vehicle, you can see the owner registration information reserved every day. According to what we learned from the after-sales staff of the 4S shop, it is necessary to wait until the end of July for the recall. In addition, when asked about the process to be handled in the recall, the after-sales staff said: We will clean the recalled vehicle festival first, and then upgrade the calibration software. It is estimated that the whole process will take one and a half hours.
After entering the maintenance workshop, the basic inspection of the vehicle should be carried out first, such as whether the lights are on normally, the chassis situation and the basic inspection of the engine.
Second, the maintenance process records
1. Clean the throttle valve
When the technicians began to deal with the faults of the recalled vehicles, we first recorded the starting time of the whole process: 16: 05pm.
First of all, according to the process, to clean the throttle, the technician is removing the throttle.
As can be seen from this picture, the removed throttle has a thick yellow layer. (Little knowledge: Too much carbon deposit in the throttle will affect the intake efficiency and normal combustion effect, thus causing problems such as unstable idle speed of the vehicle, weak acceleration of the vehicle, increased fuel consumption and slow response of the throttle. )
To start cleaning the throttle, we need to use a special throttle cleaning agent. According to our knowledge and technicians, we need to use half a bottle of cleaning agent every time and dry it with a cleaning cloth.
When the throttle cleaning is finished, record the completion time of throttle cleaning: 16: 22pm. Judging from this time, it takes 17 minutes to clean the Fox throttle.