In fact, the gearbox of the vehicle is not prone to problems, but it will be more troublesome if there is a fault. Does idling of the vehicle engine mean that there is a problem with the gearbox itself? Now let's analyze this problem.
There are generally two conditions for engine idling:
(1) When the vehicle is stable, the engine idles suddenly, and the vehicle speed slows down and then returns to normal. This generally means that the gearbox suddenly drops from high speed to low speed in a short time. The problem may be that the gearbox of the control system or cooling system has no problem.
(2) In the process of acceleration or gear shifting, there is short-term slip and idling. The intuitive feeling is that the latter is not as powerful as the former. In fact, the opposite is true. The problem of the latter mainly lies in the gearbox. In the clutch and other related links, a complete disassembly and overhaul of the gearbox is required, which costs far more time and cost than the former.
The problem lies in the power connection clutch. The clutch of manual transmission mainly includes clutch pressure plate, clutch plate and release bearing. The clutch pressure plate belongs to the driven plate, which is fixed on the flywheel behind the engine crankshaft and operates at the same time with the crankshaft. The clutch plate is the driving plate, which is connected to the input shaft leading to the inside of the transmission and is located between the flywheel and the pressure plate.
The power output of the engine to the transmission depends on whether the clutch plate is firmly fixed to the flywheel through the pressure plate. Then, shift gears in two steps, step on the clutch pedal, push the release bearing forward, the bearing rotates with the pressure plate, and push the pressure plate to release the clutch plate in a lever manner. At this time, the power output of the engine is cut off; Shift to the appropriate gear, slowly release the clutch pedal, slowly restore the release bearing to the original position until the clutch pedal is completely released, and the pressure plate firmly fixes the clutch plate on the flywheel in a very short time to fully transmit the engine power.
When the pressure plate moves back and forth for a long time, the elasticity will gradually decrease at a certain stage, that is to say, the clutch plate cannot be firmly fixed on the flywheel, and the clutch plate will slip and idle. After long-term wear, the thickness from the platen will become smaller, just like the brake pad. At this time, due to the limit of the pressure plate travel, it is not fixed firmly, thus slipping and idling.
The power output of automatic transmission is much more complicated than that of manual transmission. Manually depressing the clutch and shifting gears are replaced by computer-controlled solenoid valves. However, the power output to the drive shaft is also transmitted through gears through numerous friction plates and steel plate knots. If the transmission is not used properly or maintained in time, the transmission will be damaged?? If the oil pressure is not transmitted smoothly, friction plates will appear. Slip, spin and even burn.
Whether manual transmission or automatic transmission, once the engine accelerates, idles, slips, etc., professional inspection shall be carried out in time to replace the three plate clutch or automatic transmission. Removed and repaired. Don't delay to avoid greater losses.
In addition, the maintenance personnel of Jinan automatic transmission remind you that the transmission system has close communication with the engine system and ABS system. The pulling surface of the computer system is very complex. In addition, the mechanical accuracy is very high. Therefore, the failure of the transmission system may involve many reasons. Once the failure occurs, it is recommended that the owner go to a professional automobile repair shop for diagnosis by experienced professional technicians.