Chevrolet Niva starts and immediately stalls: when cold, reasons

Why does the Chevrolet Niva start and immediately stall when it’s cold?

The Chevrolet Niva received an injection engine that was progressive for those times, and with it a whole list of injection problems. The fact is that any engine with an injection power system is controlled 90% by electronics - sensors, controllers, processors. And these elements require a very high-quality elementary base, fine tuning and special care during assembly. If a Chevrolet Niva starts and stalls when cold, there is a possibility that the control electronics system has failed.

Chevrolet Niva starts and stalls when cold, what should I do?

Perhaps the reason should be looked under the hood?

After a long period of parking, the engine starts, runs for a few seconds, and then stalls. There may be several reasons for such a malfunction, but let’s imagine that the diagnostic station is 300 km away from us, and we need to find the cause. We proceed as follows.

Looking at the candles

When using spark plugs with cracks, current leaks through the insulator to the spark plug body.

We unscrew the spark plugs and assess their condition.

If the spark plugs are flooded or wet, then there is a possibility that the idle speed sensor did not turn on, the throttle unit sent the wrong signal to the ECU, which in turn sent too much fuel through the injectors.

In addition, a common culprit for a malfunction with such symptoms is the throttle position sensor. With a high degree of probability, the spark plugs could fail.

Listening to the fuel pump

Niva Chevrolet fuel pump under the seat.

Turn on the ignition and listen to see if the fuel pump is working.

There is a possibility that fuel is not supplied to the ramp, and the engine flared only due to the remaining gasoline in the fuel line.

If this version is confirmed, then the engine will no longer start, the fuel pump needs to be repaired, the fine filter or mesh, or the coarse filter on the fuel pump itself must be replaced.

Looking for an air leak

You should look for air leaks under the hood.

Air leaks in the power system can also cause a similar malfunction. A mixture that is too lean at startup will prevent the engine from running after a flash.

To verify this in field or garage conditions, just cover the air intake pipe of the air filter.

Often, air leaks can occur between the filter housing and the throttle assembly; sometimes excess air can enter through the junction of the intake manifold and the block head.

Chevrolet Niva won't start

It often happens that all standard units are working properly, but the engine does not start. At the same time, the error indicator on the “Check” dashboard does not light up.

It is extremely difficult to immediately name the most likely reason, since there can be at least a dozen of them. It is not advisable to try to find and fix a breakdown on your own without experience. It is better to contact a professional workshop.

Reasons why Chevrolet Niva does not start

• Crankshaft, camshaft position sensor

During vehicle operation, both sensors often fail. The reasons for this are different: manufacturing defects, natural life, third-party mechanical damage.

Since the equipment cannot be repaired due to the design features, the craftsmen install new ones. The replacement process is not long, the cost of consumables is cheap.

• Coolant temperature sensor

By analogy with the crankshaft sensor, the DTOZH cannot be repaired. The installation is quite simple and straightforward. You can do it yourself without involving service station workers.

• Idle speed sensor

To a greater extent, the electrical component of the breakdown. The design of the IAC sensor allows for maintenance, cleaning, and blowing with compressed air. Replacement in case of mechanical damage or deformation.

Spark plugs Niva Chevrolet

Unstable spark plug operation and untimely spark supply contribute to engine detonation. First signs:

• Reduced acceleration dynamics,
• Increased fuel consumption,
• The engine is not running properly
• Difficulty starting the engine.

Since candles are a disposable consumable, they cannot be prevented.

Voltage blocking alarm

Modern security systems fully control the car, its elements and assemblies. In emergency situations, the alarm will prevent theft, but the alarm may be false.

The reasons for the “false call” are caused by:

• manufacturing defects,
• short circuit in the circuit,
• malfunctions in the operation of the electronic control unit,
• damage to electrical wiring, insulation,
• poor terminal contact.

In order to be able to start the car in the future, you need to deactivate the alarm. However, you need to know what to turn off. To carry out work at a professional level, visit a service station.

Battery Niva Chevrolet

Due to insufficient battery charge, the starter does not rotate, the flywheel does not spin, and the combustible mixture in the combustion chamber does not ignite. To check the battery charge level, you need to use a multimeter.

Based on the results obtained, make a decision on the advisability of further use of the battery. The average battery life is 5 – 6 years, after which it needs to be replaced with a new one.

Lately it has become popular to buy gel batteries. Instead of the usual electrolyte, the compartments are filled with gel. The service life of batteries of this class is 25% longer than analogues.

Supply system

The main task of the fuel filter is to timely supply fuel to the combustion chambers. It is difficult to physically check the flow of fuel to the ramp without special equipment.

First, we check the flow of fuel through the filter. The presence (absence) of fuel will be visible through the transparent body. We replace the cleaning element with a new one as needed.

We check the limit switches, terminals on the contacts, injectors, and fuel pump. We clean, remove oxidation, tighten the clamps. We check the fuel pump for serviceability by turning the key in the ignition. A clicking sound is heard from the fuel pump. If there is none, then there is a malfunction in the “pump”.

You can verify the presence of fuel in the fuel rail, and also measure its pressure with a pressure gauge. Similar equipment is available in service centers and workshops.

Glow plugs

The engine does not start in the cold - the first sign of failure of the spark plugs. When in good condition, candles heat the space from the inside. In the event of a breakdown, starting the engine is complicated by low temperatures and the formation of condensation.

We check the spark plugs with a multimeter and replace them with new ones as necessary. We also inspect the spark plug start relay. It should make a slight clicking sound.

The method described above is effective for the injector. In the case of a carburetor, the checking mechanism is as follows:

• open the hood, wait until the engine cools down to a safe temperature,
• remove the cradles one by one, unscrew the spark plugs, check them for the presence of a spark,
• install new spark plugs, replace them if defective ones are found,
• assembly in reverse order.

Air lock in the fuel line of Niva Chevrolet

The intake of air into the fuel circuit from the outside creates plugs, as a result of which the fuel mixture does not burn in full. A copious amount of carbon deposits is formed, which settles inside the exhaust system and exhaust manifold.

Carbon deposits clog the catalyst, which reduces power, increases fuel consumption, and exposes the engine to unstable idle speed.

You can remove air from the system by connecting a rubber hose to the “return” and grinding off the fuel until the air is removed. Subsequently, the fuel can be reused.

Tips for care and maintenance of Niva Chevrolet

• Observe technical inspection intervals every 20,000 km,
• Buy original parts with factory catalog numbers. Avoid buying cheap analogues of dubious origin,
• During the warranty period from the manufacturer, visit a service station to undergo routine diagnostics with a note in the service book,
• Remember that the length of its service life depends on the driving style of the car,
• Observe the timing of the transition to the summer/winter tire seasons, check the tire pressure.

How to troubleshoot problems on a Niva Chevrolet

Regardless of the type of breakdown or the availability of technical equipment maintenance skills, use the services of a service station, where they provide a quality guarantee for the work performed.

Independent intervention in repairs does not always bring positive results. Use the services of handicraft workshops less often.

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Spark plug

Problems arise due to the lack of a spark, and may arise due to the appearance of soot and dirt, which prevents the formation of a spark. If there is this deposit or dirt on the contacts, then it is advisable to change the fuel to a higher quality one, and you should also check the condition of the oil supply system, since a malfunction of the sensor that regulates the oil supply leads to the spark plugs splashing. Also, the appearance of oil indicates that there are problems in the cylinders. Therefore, if you see the presence of all the above phenomena, then it is advisable to diagnose the engine in a car service center, and if the reasons for their occurrence are not eliminated in time, this can lead to an expensive replacement of pistons with jet thrusts.

If you systematically use low-quality fuel, a brown coating appears on the spark plugs, and simple cleaning will not help, so it is better to make a complete replacement.

Electricity supply

If the engine turns off while driving, but it is not difficult to start it, then the problem is most likely a faulty power supply. Problems can be caused by several reasons:

• The battery terminals have poor contact
• There is a breakdown along the entire length of the power wires
• There is a malfunction in the ignition coil system or generator

If the wires are damp, it is better to replace them along with the battery. If the terminals have poor contact, they need to be cleaned. If the generator does not work, this may be due to the fact that the timing belt has broken or there is a malfunction inside the generator itself. A problem with the generator on a Chevrolet Niva is easily determined using the indicator on the dashboard. In addition, if the energy supply is insufficient, the backlight of the car’s dashboard will be weak, and the sensor values ​​will be incorrect.

Sensors

Trouble-shooting

Having identified the problem that causes the Chevrolet to start poorly, you can begin to fix the problem. Knowing the source of the problem, you can draw the appropriate conclusions: are you able to fix the error yourself, without requiring additional help? Most of the above reasons are of a simple nature of damage, and correcting them will not take much time. For the convenience of solving the problem that causes the Shevik to not start, information on how to eliminate them is written in tabular form.

Drivers often encounter the problem of poor engine starting in winter, during periods of severe frost. These frosts damage not only the battery, but also all parts where water may have entered. This problem is also often encountered in extreme heat, when the engine overheats and then has difficulty starting.

Now knowing why the Niva Chevrolet may not start, you can easily go looking for a problem. Having identified the breakdown, you will solve the problem of poor engine starting by 50%. And the solutions are now known, so you can hit the road.

components of electrical equipment for a Chevrolet Niva car. Sometimes, in order to find the cause of a breakdown, you have to check all the components one by one. However, the experience of car enthusiasts allows us to identify the most vulnerable elements that cause the malfunction.

• The battery is low. It may fail due to long service life.
• Starter malfunction.
• Lack of contact at the battery terminals.
• Lack of spark (malfunction of spark plugs, power wires, ignition module).
• Fuse blown.
• Ignition switch malfunction.
• Errors in the immobilizer operation.

READ Which Carburetor Is Better To Put On Niva

Fuel supply

It is very easy to understand that the reason that the car stalls due to choking of the fuel mixture is that if you drive for a long time, the signal that is responsible for this function will begin to constantly turn on. This problem is associated with low quality fuel, since the spark from the candles is not enough to quickly ignite it. Another reason that the Chevrolet Niva stalls may be:

• Dirt in the fuel filter
• Injector nozzles are faulty
• Dirty throttle valve

There are minor interruptions in the power supply to the fuel pump

The presence of these problems leads to the fact that the engine power decreases and it begins to stall.

Exhaust system

If the tubes that remove gas fail, this leads to the fact that the car begins to choke while driving, stopping the engine completely. The problem usually occurs for two reasons:

• The muffler is clogged
• Catalyst faulty

If these problems occur, you should clean the muffler, check the catalyst and, if necessary, replace it.

It is important to pay attention to the prompts that the on-board computer gives; if there are errors in a particular system, they should be corrected immediately. If these problems are minor and mechanical in nature, then you can fix them yourself, but if the failure is related to electronics, then it is better to carry out diagnostics in a specialized car service center.

Idle speed controller on Shnivy: causes of malfunctions

The device is a specific relay of a special design. The problems may be similar. Usually a part fails due to factors.

1. Natural wear and tear. With prolonged use, the mechanism can wear out - the spring weakens, the valve head wears out. It is also possible that the sealing gasket or sealant may crack.
2. Mechanical damage. Typically, such problems arise after careless repairs or careless maintenance of the car. The body of the part is plastic and is not designed to withstand shock, severe vibration or shaking.
3. Electrical damage. Motorists turn to mechanics with the problem of chafing or damaged wiring. The breakdown is quickly repaired and the car is ready to drive again.
4. Software failure of electrical equipment. ECU problems and software errors are included in a separate category. Such problems can only be diagnosed by a scanner and can be eliminated exclusively at the software level.