Engine does not start Chevrolet Niva

Set of "electrical" reasons

The first step in diagnostics: remove the cap from any spark plug, install spark plug A17DVRM and, holding it with pliers, turn on the starter.

How to remove the cap

The spark plug must be held by the hexagon, the pliers must have insulated handles, and the spark plug body must touch the “ground”. As a result, a spark can be observed. If there is no spark, it means:

• The ECM is faulty or is not receiving voltage;
• The ignition coil module burned out;
• High voltage wires are faulty.

The drawing for point “1” is given below.

Power supply point to the ECM

The presence of a spark “in the air” does not guarantee its presence in the engine. The spark plugs may be faulty, the gap may be incorrect, etc.

The number of reasons why the Chevrolet Niva does not start, but the starter turns, has increased to 7.

Immobilizer blocks engine starting

If the immobilizer has been activated, then sooner or later it will block the engine from starting. It happens like this: when you turn on the ignition, the indicator flashes for 15 seconds, then goes out. And then the system produces sound signals.

“2” – immobilizer lamp

The APS-4 module can be disabled. For this you need a “red” training key. Well, the APS-6 unit cannot be turned off. Usually you have to flash the ECM.

There is no need to panic right away: perhaps the blocking occurs due to irregularities in the “reader” wiring.

Why doesn't the pump work?

So, what could be causing the element to not work:

1. First of all, it is necessary to check the functionality of the fuses. Open the block and find the fuse or relay that controls the operation of the fuel pump. If the element fails, you need to replace it.
2. The motor of the device itself has failed. In this case, all that remains is to replace the pump assembly.
3. No contact. You need to get to the device and check the functionality of all contacts - whether there is a break, whether all wire harnesses are connected.
4. Poor unit weight. Sometimes it happens that the ground wiring has oxidized and cannot transmit contact. In this case, you need to check its condition and clean it if necessary. If there is a problem with the mass, then you will also notice that the gasoline level arrow on the dashboard will drop.

Now as for the starter, why does it refuse to turn:

1. The simplest thing is a dead battery. Perhaps you are in the first place, but we are obliged to warn you about this. Try or “smoke” from another car.
2. Signaling. In some cases, in practice, we have more than once encountered such a problem as an alarm short circuit. This happens for various reasons - due to water getting into the alarm unit, broken wires, etc. But the result is the same - if the alarm unit closes, there will be no fuel pump. The problem can be solved by repairing the board or replacing it, although the search may take some time.
3. Failure of the solenoid relay. In this case, the starter will either be silent or buzz, but it will be impossible to start the engine.
4. Bendix failure. This element is a gear located on the same shaft as the starter rotor. If the gear teeth are heavily worn, problems may arise with starting the engine.
5. Worn bushings. The only solution is to replace them.
6. Wear of the device windings. This occurs as a result of the fact that the element has already exhausted its service life. Replacing windings is a difficult and time-consuming task; it will be easier to completely change the component completely.

Fuel rail

On the ramp next to regulator 5 there is a control fitting 3. It is closed with a cap, which is unscrewed and then carefully pressed on the spool.

If fuel flows, it means it is entering the ramp. But perhaps the necessary pressure is not created. Reasons: clogged filter cylinder, pump malfunction, etc.

The pressure should be 350 kPa (3.5 bar). It is controlled by unscrewing the spool and installing a pressure gauge. Before checking, you need to reduce the pressure!

If fuel does not flow, notice whether the pump turns on when the key is turned to the “I” mark. When the ignition is turned on “cold”, the pump should run for 10 seconds.

Additional mounting block

Know that fuse F2 and relay P4 are responsible for turning on the pump. There is also a main relay P5, and all these elements are located in a block mounted on the same bracket with the ECM (see photo).

Even if the pressure is normal, the injectors may be clogged. In addition, their wiring may be damaged.

Case from practice

What happens if water gets into gasoline? In the summer - nothing. And in winter, the power supply system can become clogged with ice. All elements are at risk, from the pump to the injector valves!

Niva stalled while driving and won't start

A moving car creates a terrible situation and it doesn't matter where it happens. If you are driving even at low speeds and your car stops at one point, it is possible that someone may not have time to brake and will slam into the rear bumper for you.

If a car stops on a busy highway, this is a great opportunity to get into a very serious tragedy. If your car is in motion it will not start, the likely conditions vary greatly. Next, we will analyze 6 common circumstances when such a car appears on the road, as well as additional ways to solve this problem.

Alternator failure is one of the most common circumstances when a car stops working. Most drivers believe that if the alternator fails, the car will not start. In fact, what remains for our client is a little different, if the battery is charged, of course, your car will start and even run with a faulty alternator.

The fact is that in this case the car does not run on a generator, but on a battery. However, this ultimately results in the car not starting unexpectedly due to poor battery life.

Check the battery charge level only with a voltmeter. Checks must be carried out with the engine off and lights off. Open the cover and connect a voltmeter to the battery terminals. To do this, the positive terminal of the voltmeter must be connected to the positive terminal of the battery, the negative terminal. to the negative terminal.

Remember that a fully charged car battery should have a charge of 12.66 volts.

Often there is no warning that your fuel pump is about to fail. Firstly, you will only notice any problems if the machine dies. And with this fault, the car can no longer be restarted.

The efficiency of the fuel pump is determined by the corresponding buzzing sound when the engine starts. If you don't hear any noise coming from the fuel tank when you try to start your car, your pump may be faulty. Since the machine cannot cope with this problem, our client is left with what is needed. This is a tow truck at a car service center.

If there is a lot of water in gasoline, then this mixture, entering the combustion chamber, does not burn out carefully, disrupting the proper operation of the engine. If you refueled not long ago, and the car was working fine before, then perhaps the problem is in the fuel.

Of course, there are two ways to solve this problem:

• 1st. Drain gasoline from the fuel tank. Then pour fresh fuel into it.
• 2nd. keep driving with bad fuel until the car consumes what is left to make fuel for our client. Which, of course, is not recommended for obvious reasons. Next time, fill up at a different gas station.

If the car stops running and won't even start, and none of the above circumstances apply, then you are guilty of all bad conductors. First thing to do. This is to check the idle system for corrosion on the wires. If corrosion is present, it's time to change the wiring. Also, the two basically make sure that the wires are connected correctly if any repairs have been made.

If your car stalls while going downhill or hiking while driving in hilly areas, the problem is low fuel pressure. The machine does not work properly with this problem.

You car can easily start and move on a smooth road, but when going up a mountain, it may be delayed due to low fuel pressure. Modern. This is one of the most common problems to solve, try adding some cleaner to clean the injector in the fuel tank.

Why did the car stop working and not start? VAZ 21114 repair

The distributor cap plays an important role in the performance of your engine. The cover is necessary to protect the distributor and its internal rotor. Voltage is supplied from the distributor cap to the spark plugs. If something doesn't match the hood size, the engine can stall, as a tee is called. Problems can be found using:

• There is a break in the cover;
• Poor condition of the body, namely the presence of cracks;
• In other words, wear and corrosion on the contacts;
• Condensation in the body itself.

If the cause of the contacts is still called cracks, then from time to time you can quite easily tear off the contacts and treat the cover with sealants, of course, this will not solve the problem one hundred percent, but as a temporary measure it will work completely. Because this problem will come back again and, as a rule, at the most inopportune time.

Remember that a car is made up of many interconnected devices and components, and a car can stop on the road not only because of problems with the engine, but also because of other car systems.

Here is a list of the most common defects that can lead to engine shutdown:

• Engine overheating;
• The freeze temperature sensor or crankshaft position sensor is faulty;
• There was a fuse;
• Oil or antifreeze soaked;
• Throttle problems;
• Spark plugs are clogged;
• The fuel or air filter is clogged;

And this is not the whole list of problems. If the car is in motion and won't start, you'll probably like the fact that you just ran out of gas. Sell, of course, and end up in this situation if you don't refuel properly.

And this is only a small part of the shortcomings that a driver may encounter on the track. However, we hope that they will be enough to solve your difficulties. Always, if you are a novice driver and are not well versed with automatic devices, then the ideal option would be to call someone who may be better in this area than you. We hope you found this article useful. We wish you success and good luck on the roads!

The field is not running. I'm looking for a reason

Source

Electrical faults

1. First of all, for all types and models of cars, you should pay attention to the battery - it can be worn out or simply discharged.
2. The starter has become wet or has become unusable.
3. The terminals may have oxidized, resulting in poor battery contact.
4. Malfunctions are often due to defects in spark plugs, which occur when using low-quality fuel. Also, the spark plugs could simply wear out, forming a large gap.
5. Another reason is a blown fuse.
6. Broken ignition relay.
7. It is possible that the wire supplying the starter or injector has been torn off.
8. The immobilizer is not working.

Reasons why Chevrolet Niva doesn't start well

To troubleshoot a car problem, you first need to find out the source why the car won’t start. The driver can be helped in identifying damage by various sensors on the instrument panel, an external inspection of the car, or the sound that is made when the key is turned. So, the main problems that cause the engine to start poorly and the car will not start may be the following malfunctions.

Causes of electrical damage:

1. The car battery has become unusable or discharged. This basis is primary for all types of cars.
2. The starter became unusable due to getting wet, or, as they say, it served its purpose.
3. Poor contact from the battery due to oxidation of the terminals.
4. Defective spark plugs, which could occur in the following cases:
5. Poor quality fuel, which led to them getting wet.
6. The spark plugs have already worn out and a large gap has formed.
7. The fuse has blown.
8. The ignition relay or something else has failed.
9. The wire supplying the main components of the car (for example, power supply to the starter or injector) has come off.
10. The immobilizer does not work. If for any reason the anti-theft system does not work, the car will not be able to start until the immobilizer malfunction problem is resolved.

Mechanical faults:

1. There is no fuel in the gas tank. This may not only be the fault of the driver, because there is a possibility of a breakdown of the fuel level sensor. Not every driver counts fuel by the number of kilometers driven.
2. Clogging of the fuel filter or fuel pump, which leads to breakdown of the latter.
3. Nozzle clogged.
4. Insufficient oil level in the engine or antifreeze in the radiator. Causes the engine to overheat.
5. The idle speed control is damaged.

How to find out the cause of the problem

Knowing the most common sources for which the Chevrolet Niva does not start well, now you need to find out how to correctly determine the damage? After all, there are many reasons, and it will take a considerable amount of time to check all this. Finding out the reason why your iron horse does not want to work is done with the help of your eyes, ears and car tips. You can call a technician to your home, who will determine the damage in a matter of minutes, and sometimes even seconds. And for this clarification, you will have to pay a lot of money. You can take your car to a service station by asking a friend to help with transportation. It will cost much less than calling a technician to your home, but you will spend a lot of time. Therefore, your best bet for determining damage is you and your head. Only if all possible reasons have been verified, then it is necessary to contact a specialist. Perhaps your car requires a major check of the entire system.

What's the result?

As you can see, there are quite a lot of reasons for the difficulty of starting an internal combustion engine or the complete failure of the engine to start. In some cases, there may well be equipment failure, while in others the culprit is simple corrosion on electrical contacts, oxidation of terminals, breakdown of insulation of power wires, etc.

Once again, please note that the above recommendations should be taken into account when the starter turns confidently and constantly, there are no jerks, grinding sounds, or impacts. In other words, you first need to eliminate the possibility of problems with the starter itself.

If the starter jerks after turning the ignition key, then there may be poor contact of the power wires to the starter, wear of the starter brushes, and oxidation of its contacts. Failures after replacing the starter are also a common occurrence. In this situation, errors are quite possible when installing the element.

We also recommend reading the article about why the starter does not work after turning the key in the ignition. From this article you will learn about possible causes and solutions to this problem.

If the starter is working normally, then it is enough to clean the contacts or replace the filters, although often the problem can be solved by replacing a faulty element with a new or known working part (for example, an ignition coil, etc.).

By the way, in the case when moisture is detected in the engine compartment or condensation is clearly observed, then to start the engine it is enough to just dry the engine compartment. This can be done right on the spot or you can deliver the car to a warm box. However, in the future you should still carefully monitor whether water appears under the hood again. If yes, then you need to be prepared for the problem to reoccur.

To solve the problem, you should first minimize the ingress of moisture under the hood (depending on the situation, do body repairs, install dust, dirt and water-repellent protection, check the integrity of the seals, clean the drainage channels, etc.) Then you need to deal with the equipment and wiring under the hood, eliminating possible malfunctions and checking the integrity of the wire insulation.

Finally, we note that in some cases, especially if problems arise with the ECM sensors, computer diagnostics of the engine can identify the breakdown. This approach greatly simplifies the troubleshooting procedure.

>14.15 Won’t start - useful tips