Engine failure during idling?

The causes of engine failure are:

First of all, the lubricating oil consumption is abnormal, which is usually caused by three reasons: first, the sealing of the engine piston, resulting in too large a gap between the piston and the cylinder wall, and the situation of burning engine oil; The degree of wear of engine parts is too large, the gap between parts is large, and there is abnormal lubricating oil consumption; Third, the quality of lubricating oil is not up to standard, resulting in abnormal oil consumption.

For the maintenance of lubricating oil, we should first check the quality and quantity of lubricating oil, and replace it with new lubricating oil if necessary to avoid engine failure due to oil quality problems. After ruling out the quality of the oil, the parts should be checked. An abnormal engine can be due to excessive wear between parts, too much clearance between parts, or too high oil pressure, resulting in oil burning.

In addition, the main causes of oil leakage are the aging of the gasket and the stuck valves.

Secondly, the engine overheated:

When the engine is running, it is easy to produce a rise in coolant temperature, and once the temperature exceeds the normal value, the engine cannot directly lead to direct heat dissipation, thus affecting the normal operation of the engine. The main causes of abnormal cooling systems are thermostat failure, radiator failure, fan failure, water tank failure, etc.

1.Idle switch does not close Fault analysis: When the idle contact is disconnected, the ECU determines that the engine is in a partial-load state. At this time....

2.Idle Control Valve (ISC) Failure Analysis: The correct idle speed of the EFI engine is guaranteed by the electronically controlled idle control valve.

3.Air intake line leakage Fault analysis: From the idle stability control principle of the engine, it can be known that under normal conditions, the opening of the idle control valve.

4.Valve Phase Error Failure Analysis: For vehicles using mass flow type air flow sensors, this sensor uses a constant temperature differential.

5.Injector dripping or clogged Failure analysis: If the injector is dripping or clogged, it cannot be injected according to the ECU's instructions.

According to your description. Engine idle failure. It is recommended that you clean the throttle. Redo the match to see if it solves this problem, hopefully.

Poor idle speed is one of the common faults of electronically controlled gasoline injection engines. It has a variety of manifestations, including unstable idling, idle stall, poor idle speed of cold cars, poor idle speed of hot cars, etc. Symptoms:

The engine starts normally, but whether it is cold or hot, the idle speed is unstable, the idle speed is too low, and it is easy to stall.

Cause: Air leakage in the air intake system; The oil pressure is too low; Blockage of the empty air filter; Poor atomization, oil leakage, or clogged injectors; improper adjustment of idle speed; Poor working of the idle control valve or bypass air valve; The spark plug is not working properly; The air flow meter is faulty; The cylinder compression pressure is too low.

Engine idle speed is one of the operating conditions of the engine. GB18285-2005 "Emission Limits and Measurement Methods for Exhaust Pollutants from Ignition Engine Vehicles (Double Idle Method and Simple Working Mode Method)": Idle working mode refers to the no-load operation of the engine, that is, the clutch is in the engaged position and the transmission is in neutral gear (the vehicle with automatic transmission should be in the "stop" or "P" gear); For vehicles equipped with carburetor fuel supply systems, the choke should be in the fully open position; The accelerator pedal is in the fully released position.

Engine idle performance has a great impact on emissions, fuel consumption and comfort, so engine idle performance is an important indicator to evaluate engine performance. At idle, the engine is separated from the drivetrain, the accelerator pedal is completely released, and the engine can only drive on its own resistance, without outputting power. The idle speed of the engine is known as idling.

Generally, the idle speed of diesel engine is 500 800 rpm, and the idle speed of gasoline engine is 700 1000 rpm.

The situation of bad idle speed is because of the problem of malfunction of the gearbox, and the time of the date should be checked in time, and it is also necessary to replace a gearbox to be able to solve it.

If this happens to the car, you should go to the repair shop in time to repair it and let a professional person do it.

If the engine is running poorly at idle, a fault self-diagnosis should be carried out first to check whether there is a fault.

It's best to drive your car to a car repair shop and get someone to fix it.

In today's life, many people will give themselves a car, and their beloved car will have some minor problems after a long period of use. So how do we detect these little bugs? What is the cause of poor operation when the car engine is idling?

Let's analyze it and solve these problems. First of all, we should understand what a car idling is. <>

Car idling, in fact, does not refer to the speed at which the car runs, nor does it refer to the speed at which the car engine runs. This term does not refer to the speed at which the engine of a car is running normally on the road. Rather, it refers to the normal speed of the car engine when it is idling, and when the engine is idling, we call it idling.

When we don't let go completely, but we don't step on it, the engine is idling. The number of cars is actually quite damaging to cycling. <>

This is extremely unscientific for environmental protection. When our car idles too high, we should check it. The first aspect should be examined first.

If there is a problem with the engine, we should find a professional to open the top of the car hood and repair the car engine to see if there are any foreign objects entering. If there is another entry, it should be dealt with in time, and if not, it should be ruled out whether it is the engine that is directly damaged. On the other hand, when the engine water temperature is too low, the engine voltage is low when the air conditioner is turned on, so it will cause pronouns to be abnormal.

I should check the operating status of the engine and various electrical devices in time, and respond to the 4S shop in time. On the one hand. An injector leak can also cause a car engine to idle too much.

Because the amount of oil supply caused by him will become larger, it will cause the idle gear to be higher than the normal value. We should check the injector in time and replace it in time. Have you learned?

It may be that the temperature of the rough engine is too hot, and there is a certain problem with the engine, and it is also a problem with the silver coolant, so it will cause poor operation.

I know that the main reason is that there is a problem with the gearbox, which causes the idle to run poorly and to be slow.

If there is a problem with the parts in the engine, you should choose to replace the engine, or repair the engine.

It is very likely that there is a problem with the engine, or it is possible that the spark plug is faulty, and you should go to the repair shop in time to repair it.

Damage to the engine idle motor or idle motor wiring; Leakage of vacuum tube of brake booster; damage to the diaphragm of the brake booster; air leakage in the intake manifold; Source-by-chain engine electronic control unit (ECU).

What's going on with the car idling off?

First of all, let's analyze the symptoms of idling off.

If the engine starts to idle and then stalls, we call it "no idling".

The causes of this failure are: damage to the engine idle motor or idle motor wiring; Leakage of vacuum tube of brake booster; damage to the diaphragm of the brake booster; air leakage in the intake manifold; There is a problem with the idle control module in the engine electronic control unit (ECU); 2.If the engine stalls at idle and then returns to normal after restarting, we call it "intermittent idle stalling".

The causes of "intermittent idle stalling" generally include: engine idle motor stuck; The wire sheath of the idling motor is worn; The idle stomata are too dirty; There is a problem with the engine throttle position sensor; 3.There is a problem with the camshaft position sensor or crankshaft position sensor; The engine speed sensor is faulty or dirty; There is a problem with the idle control program of the engine's electronic control unit.

In addition, if the quality of the gasoline is not right, it will also cause this failure; 4.Engine idle speed is one of the working states of the engine.

GB18285-2005 "Emission Limits and Measurement Methods for Exhaust Pollutants from Ignition Engine Vehicles (Double Idle Method and Simple Working Condition Method)" Idle speed refers to the no-load operation state of the engine, that is, the clutch is in the engaged position and the transmission is in the neutral position (for automatic transmission cars, it should be in the "parking" or "P" gear); For vehicles equipped with carburetor fuel supply systems, the choke should be in the fully open position; The accelerator is in the full release position.

If the engine starts to idle and then stalls, we call it "no idling".

The causes of this failure are: damage to the engine idle motor or idle motor wiring; Leakage of vacuum tube of brake booster; damage to the diaphragm of the brake booster; air leakage in the intake manifold; There is a problem with the idle control module in the engine electronic control unit (ECU); 2.If the engine stalls at idle and then returns to normal after restarting, we call it "intermittent idle stalling".

The causes of "intermittent idle stalling" generally include: engine idle motor stuck; The wire sheath of the idling motor is worn; Idle stomata are too dirty; There is a problem with the engine throttle position sensor; There is a problem with the camshaft position sensor or crankshaft position sensor; The engine speed sensor is faulty or dirty; There is a problem with the idle control program of the engine's electronic control unit.

In addition, if the quality of the gasoline is not right, it will also cause this failure; 3.Engine idle speed is one of the working states of the engine.

GB18285-2005 "Emission Limits and Measurement Methods for Exhaust Pollutants from Ignition Engine Vehicles (Double Idle Method and Simple Working Condition Method)" Idle speed refers to the no-load operation state of the engine, that is, the clutch is in the engaged position and the transmission is in the neutral position (for automatic transmission cars, it should be in the "parking" or "P" gear); For vehicles equipped with carburetor fuel supply systems, the choke should be in the fully open position; The accelerator is in the fully released position.

There are many reasons for the high idling speed of the car, but you must know that the engine ignition, air intake, and fuel injector jointly determine the number of fuel gears, and it is also the power of the engine. The common causes of high idle speed of automobiles include throttle stagnation and loose closing, idle control valve failure, water temperature sensor failure, air intake system leakage, air conditioning switch and power steering pressure switch failure, etc.

It is very likely that it is caused by too much carbon deposit, or it is also possible that there is a problem with the air intake pipe, and there may be an air leak. The car should be taken to an auto repair shop and then checked by a professional.

It may be caused by the fact that the switch is not closed, and it is necessary to pay attention to check, or it may be because there is a problem with the control valve, so the speed is too high, and you must pay attention to maintenance.

The power of the vehicle decreases, the parts are damaged, the vehicle has reached the end of its useful life, the engine is broken, and the dashboard is broken; Replace vacuum pipes, replace parts, replace engines, change a car to the repair shop for repairs.