What is the problem that the car will not go after gearing? And the propeller shaft will not turn, t

1. Whether the steering wheel is in a deadbolt state. The solution is simple, as long as you hit the steering wheel hard and twist the key at the same time, you can generally unlock the steering wheel lock quickly, and the ignition is an instantaneous thing.

2. Did you not return the gear to P gear when you parked? Think about it, if the D or R gear can be ignited, the jump of the vehicle at the moment of ignition is undoubtedly a huge safety hazard. Therefore, for automatic transmission vehicles (AT, CVT, AMT), manufacturers will preset this mode, and repeatedly inform in the manual:

Make sure the gear is in the P position when ignition.

3. One-button start sometimes encounters the trouble of power loss of the smart key, obviously the key is in the car, but the instrument always shows 'key matching error', this situation is likely to be the power loss of the smart key, and the start system can not sense the weak radio waves emitted by the key. Therefore, it is recommended to pick up the smart key and put it on the start button, and then press the button to start.

4. Check whether the battery has electricity. If the ignition is not ignited, it may be due to the loss of power or the expiration of the battery life due to the long-term headlights have not been turned off, and the battery is generally replaced in time according to the maintenance manual.

5. See if there is oil. If the fuel gauge shows that it is below the red line, it will not ignite. At the same time, pay attention to the quality of the oil. There have been car owners who found that there was water and mud in the fuel tank after disassembling the car, and with such oil, it is impossible for the car not to break.

6. No antifreeze is added.

Some car owners add water or inferior antifreeze to the car, resulting in a particularly cold winter, causing the entire waterway to be frozen, the engine to be frozen and cracked, resulting in the car water pump can not operate, can not catch fire, and injure other parts of the engine.

Is the clutch burning?

This is a 14-year-old Audi, with a dry wet dual-clutch, the fault phenomenon is that the gear does not go away, after the technician test, computer inspection, found that it is the failure of the electromechanical unit, Audi, BMW, Mercedes-Benz and other car brands of automatic transmission maintenance.

The car does not drive after being in gear, and this problem often occurs in novices. There are roughly the following reasons:

1. The engine didn't start at all. When the engine is turned off, how can the car move?

2. The clutch is not lifted to the semi-linkage state. If the driving force is not enough, the car will certainly not move.

3. Didn't let go of the handbrake. The handbrake is also called the parking brake, and if you start without letting go of the handbrake, it is really motionless.

4. The wheel fell into the pit and slipped. At this time, it does not provide enough driving force to drive the car, and it does not move.

6. The clutch is really broken. Friction plate damage, pressure plate spring breakage, release bearing failure, etc., resulting in clutch slippage, unable to transmit engine power and torque, so that it is impossible to start driving.

When the neutral gear is hung, the engine and transmission are not rotating, and the propeller shaft is still spinning because the propeller shaft is still rotating under the inertia of the car.

The propeller shaft is a rotating body with high speed and less support, so its dynamic balance is crucial. Generally, the transmission shaft must be tested for dynamic balance before leaving the factory, and adjusted on the balancing machine. For front-engine, rear-wheel drive cars, the rotation of the transmission is transmitted to the shaft of the final drive, which can be several sections, and the joints can be connected by universal joints.

Inertia is the property of an object to resist the alteration of its state of motion. The inertia of an object can be measured in terms of its mass, and the greater the mass, the greater the inertia. Isaac Newton defined inertia in Principia Mathematica of Natural Philosophy as:

Inertia, or the force inherent in matter, is a resistant, which exists in every object, comparable in magnitude to that object, and which is kept as far as possible in its present state, whether at rest or in a uniform linear motion.

If the engine and transmission are in neutral while driving, the engine and transmission are rotating, and the propeller shaft is still spinning under the inertia of the car.

The function of hanging neutral gear is to cut off the power output of the engine, that is, the power connection between the engine and the transmission, the engine is still rotating, if you are referring to the propeller shaft is the one from the gearbox to the bridge bag, in addition to slipping, it is not easy to explain; If not, it will be easy to explain, there is not only one power output route of the engine, if it is transmitted to the air conditioning and other mechanisms, it is not normal.

Because the tires of the car are still rotating, the tire isomorphic eight-wheel reaction force to the rotating shaft.

Because if you don't step on the clutch and put it in gear, the engine and gearbox are separated, and the power on the engine cannot be transmitted to the gearbox, so the vehicle cannot be driven.

The clutch is located in the flywheel housing between the engine and the gearbox, and the clutch assembly is fixed to the rear plane of the flywheel with screws, and the output shaft of the clutch is the input shaft of the gearbox. While the car is moving, the driver can press or release the clutch pedal as needed to temporarily separate and gradually engage the engine from the gearbox to cut off or transmit the power input from the engine to the transmission. The clutch is a common component in mechanical transmissions, allowing the transmission system to be disengaged or engaged at any time.

For manual transmission models, the clutch is an important part of the automotive power system, which is responsible for cutting off and connecting the power and the engine. When driving on urban roads or complex road sections, the clutch has become one of the most frequently used components, and the quality of the clutch directly reflects the level of driving and also plays a role in protecting the vehicle. How to use the clutch correctly and master the principle of the clutch to use the clutch to solve problems in special situations is what every driver of a manual transmission model should master.

The so-called clutch, as the name suggests, is to use "off" and "close" to transmit the right amount of power. The clutch is composed of friction plates, spring plates, pressure plates and power take-off shafts, which are located between the engine and the gearbox, and are used to transmit the torque stored on the engine flywheel to the gearbox to ensure that the vehicle transmits the appropriate amount of driving force and torque to the driving wheels under different driving conditions, which belongs to the category of powertrain. In the case of semi-linkage, the power input end of the clutch and the power output end are allowed to have a speed difference, that is, the appropriate amount of power is transmitted through its speed difference.

As you said, take the manual transmission as an example, the normal manual transmission is divided into 5 forward gears, 1 reverse gear and neutral gear, 5 forward gears are changed through the gear lever to change different gear ratios, thereby changing the speed, which is why the engine at a certain speed, the car can change the speed, you can refer to the rear wheel of the bicycle that can change the speed, they are a truth. Neutral gear is the gear idling without energy output, and reverse gear is to add an idler pulley between the two gears to change the direction of rotation of the output shaft. Also, the manual car has three pedals, namely clutch - brake - throttle, in which the clutch is to control the power transmission between the engine and the gearbox, and the pressure is to cut off the power transmission, at this time hang a gear, slowly lift the clutch pedal is to synchronize the speed with the transmission ratio of the gearbox in the first gear, at this time the car will start, and then cycle the same action in turn to increase the speed, I believe you must understand in such detail. Ha.

Idling and gearing?? Idle means that the engine is at the lowest speed when it is called idling, you can also run with idle speed after you are in gear, do you understand idle speed as neutral?

Gear is the overspeed box through the combination of different gears is the car from the engine clutch to the wheel of the drive shaft and so on all combined, neutral gear in the middle of the part of the disconnection, there is no combination, so the power in the gearbox is interrupted, after the gear is combined, the power can be transmitted to the wheels on the car can run.

The following reasons can be considered for not moving after starting the vehicle: the drive shaft is off, the clutch is slipping, the handbrake is not released or does not return, and the brake does not return.

1. Check whether the lower handbrake is released, if it does not move after release, it may be that the brake system or gearbox is abnormal;

2. Look at whether the transmission shaft rotates or not, such as over-rotating, it is a problem with the rear axle, if it does not rotate, it is a problem with the transmission or clutch.

When the car is driving, it suddenly feels that the acceleration performance has deteriorated, the transmission seems to be out of neutral, and the car slowly stops; Or when the car starts in gear, the car does not move. The location of the fault should be identified first. If the two rear wheels are thrown out, it may be that the half-shaft casing is broken or the wheel bearing lock nut is out of place.

If it is normal, it should be judged according to the dynamics of the transmission shaft when the gear starts.

If the propeller shaft rotates but the car cannot move, the fault is on the rear axle. When jacking up the rear axle and rotating one rear wheel, if the transmission shaft does not rotate and the other rear wheel reverses, it means that the driven bevel gear rivets are all cut off. If the other rear wheel does not rotate, the half shaft should be dismantled and checked for breakage.

After the car starts, the transmission shaft does not rotate when it is in a certain gear, indicating that the fault is in the transmission. The transmission cover should be removed and the transmission fork should be checked to see if it is broken and whether the guide block fixing screw is falling off.

When the transmission is in any gear, the transmission shaft does not rotate, which is a clutch failure. It should be checked whether it is seriously slipped, whether the clutch driven disc spline tooth and the steel rivet are all cut off or the steel plate is broken.

Pay attention to the manual transmission, and stop immediately in this case, otherwise the gearbox will be scrapped directly.

Hang up the gear and let go of the clutch, listen to the engine sound, if there is a change in the clutch, it will be fine, and then you have to consider whether your transmission exploded, should not pull the handbrake to start? These can be judged by the roar of the engine, and if everything is fine, you can go to the repair shop to look at the drivetrain.

If the gear does not go after starting the vehicle, the following problems can be considered: the drive shaft is off, the clutch is slipping, the handbrake is not released or does not return, the brake does not return...

Is there no starting engine, so it won't go.

It's the brake pads that are locked, just use an iron rod against the brake drum and hit it with a hammer a few times. Be careful not to break the drum wheel!

Nonsense, the car didn't start, how to go.

First of all, after the car hits, we put on forward gear D, and the vehicle does not go. This is to check whether the intake valve of our car has too much carbon, and if there is too much carbon, then the vehicle will not go. This is very easy to deal with, we can go to the 4S shop to clean the throttle, and this problem can be solved.

Secondly, our car is in D gear, is it that our handbrake is not released. If the handbrake is not released, the vehicle will not go, and the car will feel particularly heavy when the oil is applied. This kind of problem is serious in winter, and the handbrake is frozen and not loose.

Then there is a problem with our gearbox, and if there is a problem with the gearbox, there will also be a car that cannot be driven after the car is in gear.

Based on the above, if the vehicle is occasional, you can go to the 4S shop to check it and see what the problem is. I think it's because the handbrake isn't released.