The Niva starts and the injector immediately stalls

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.

Main reasons

A serviceable Chevrolet Niva engine should start the first time. The main reasons for a poor startup may be:

• Canister valve malfunction
• Crankshaft sensor failure

One more reason can be identified as an additional reason. Part of the fuel wire near the right wheel is rotting. Possible problems with pressure and increased fuel consumption. You should definitely check this place on a viewing hole or lift.

Now let's look at the main reasons separately.

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.

Cleaning the XX regulator

Old idle air control on a Niva Chevrolet.

Idle speed regulator . Considering the quality of our 92 gasoline, dirty IAC is not that uncommon.

If, after trying to start again, the car starts, but the speed fluctuates within the range of 1500–2000 rpm, you can safely remove the idle speed control, clean it or change it.

The regulator will also manifest itself in motion, when the car is coasting, the engine may stall or stall frequently, there may be no idle speed at all if the regulator is faulty or completely coked.

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.

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.

First of all, you need to remove the cap from the spark plug (any one) and install spark plug A17 DVRM. Holding it with pliers, turn on the starter.

To remove the cap, hold the spark plug by the hexagon (pliers with insulated handles are suitable). It is necessary that the spark plug body touches the “ground”. As a result, you will be able to see a spark. In the case where there is no spark, this indicates:

• malfunction of the ECM or lack of voltage;
• combustion of the ignition coil module;
• damage to high-voltage wires.

By the way, a spark “in the air” does not guarantee its presence in the engine. Spark plugs can be faulty, there is a gap violation, etc.

Niva does not idle, stalls (solved) - 4 answers

Disconnect the terminals from the wires. Use a Phillips screwdriver to unscrew the screws on the throttle valve. When the device mount is unscrewed, you can remove it from its seat. Usually, you can get the O-ring along with it. But, in some Chevrolet Niva does not keep idle speed, it can get stuck in the damper well.

In this case, it must be carefully dismantled. But sometimes the device may be working properly, but problems in operation are associated with its clogging. In this case, you can try cleaning it with carburetor cleaner.

Typically, this method helps to revive a device that has no visible mechanical damage. Checking the work. The idle speed of the Chevrolet Niva may be incorrectly adjusted if the sensor has increased travel between the valve and the supporting surface.

When measured with a caliper, this distance should not exceed 23 millimeters.

Chevrolet Niva does not start: three different sensors

The crankshaft position sensor will not indicate its failure in any way. The Check light will not light up, the engine will simply not start. Finding this sensor is easy if you know (see photo).

DPKV sensor connector

Here we check the serviceability of the wiring, as well as the distance from the sensor to the “teeth” (0.8-1.2 mm).

The second suspicious element will be the temperature sensor. The engine may not start only if it breaks. In this case, the electric fan should work without turning off.

That is, a break in the DTOZH sensor circuit is easily recognized.

Element “6” is DTOZH

In the photo there is a sensor, and to get to it, the air duct is removed.

If the idle speed control malfunctions, the engine on a Chevrolet Niva does not start, but the starter turns. By the way, the lamp may be on

Check.

Diagnostics:

1. Just lightly press the gas and turn on the starter;
2. If the engine starts, but without gas it does not start, it means the IAC is faulty.

Chevrolet Niva does not hold idle speed and stalls

Compliance with these parameters is necessary in order to ensure correct installation and not damage the Chevrolet Niva does not hold idle throttle speed. Before installation, the seat must be cleaned. You can also lubricate the O-ring with engine oil to make it easier to put it in place.

The car stalls after turning off the starter. A dirty throttle valve is to blame! It happens that the car does not want to slow down the engine speed when you release the gas pedal or stalls at idle. Basically, the problem here lies in a clogged throttle valve. It might just jam.

Why disable the immobilizer on a Chevrolet Niva

If the immobilizer is active, the Chevrolet Niva car engine practically does not start, which is a huge problem for attackers. The vehicle owner may need to disable the immobilizer in the following cases:

• an APS immobilizer or other device of a similar type cannot affect the car if it is started by unauthorized persons;
• the driver suspects that problems arise with the operation of the immobilizer due to a malfunction of one of its parts;
• there is a complete or partial break in the immobilizer wires, which are responsible for the receipt of specific signals;
• a specific model of an APS immobilizer or other security device is completely outdated, and the driver wants to replace it with a more modern version;
• The owner of a Chevrolet Niva wants to install a standard alarm system instead of a security immobilizer.

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.

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.

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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.

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.

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.

Also interesting: Home > Popular > Auto and motorcycle products > "Niva LED headlights" 3,813 products found

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.

Chevrolet Niva stalls while driving and won't start

I mean I eat for myself, I don’t bother anyone. That time the car just stalls and refuses to move. I don’t press the gas pedal to the floor, it’s all to no avail. Then I coast for a few seconds, turn on third, and hurray - it starts. The second similar moment was when approaching the house: it stopped on its own, I turned off the ignition, let the car rest for a few seconds, after which it calmly started up and drove on.

In the evening it was more epic: a friend in a Chrysler belly truck got stuck by the river, I went to pull him out. When I arrived, the car stalled and stubbornly refused for about 10 minutes, it started normally. In the morning, exactly the same story happened. Well, well: I park the car and pay for repairs.

The “check” didn’t light up, but I connected the computer and checked just in case. There were no mistakes. There was only one conclusion - the fuel pump died. In light of the fact that recently I often drove “on a light bulb”, there was more than enough confidence that the motor died the death of the brave. I heroically disassembled everything I needed, took out the motor and went for a new one.

Next, we drink freshly brewed coffee and get back to work. I installed it and started it. Everything works great, everything is good. I went for a little ride and stalled again - everything went according to the old scenario. After settling down, I rushed to the house and again started digging into the car.

The next connection to the computer showed nothing, and I went to look for the problem using scientific poking. There was a thought about overfilling the fuel, and I opened the candles. Here, an autopsy showed that the mixture not only did not overflow, but did not enter the pots at all. Before this, by the way, there were mistakes on the mass air flow sensor and lambda, but the lack of errors in the brain was embarrassing.

And then I decided to check the crankshaft sensor. I took it off, cleaned it, and put it back in place. And oh, miracle! The check light comes on - the cause has been found. This was followed by a trip to the store, purchase of a new sensor, and installation. Now, pah-pah-pah, everything seems to be working stably. Well, I installed new spark plugs at the same time.

I was upset that I spent 900 rubles on a fuel pump for nothing. But then I realized that it was still good that I opened it. At least I replaced the mesh and cleaned out the dirt and glasses. And now I’ll meet the Moscow guests, and I can get over my hangover...

By the way, I realized that I am not only stupid, but also strong. There is even a guide on the pump chip, and there is no other way to insert it. In theory, you won’t stick it in. But I managed to put it back to front.