Life hack: Priora car ignition coil for 16 valves, its price and design

To go, you need to start! The ignition coil of a Priora car is not expensive. Its price for VAZ 2170 is from 2000+ rubles. On some machines this is a sore part that constantly breaks down. On a Priora with a 16-valve engine, there are about 4-5 analogues of this part.

Read the article to the end and find out how to check its performance and which one is better. Starting the engine of a Lada Priora car is a difficult procedure, which involves several parts and assemblies at once. At the same time, the standby engine start is carried out very quickly. At this time, several small subprocesses take place, and one of them is the creation of the first spark to ignite the fuel-air mixture.

To create a spark, it is not possible to place an open fire under the hood. The injection engine has become more “advanced” compared to its carburetor predecessor - it uses ignition coils, one installed with each cylinder.

An incident may occur, causing the engine to start “unevenly”. You will have to immediately look for how to check the elements of the ignition system. If it turns out that the problem is in these small parts, do not rush to despair, because in stores there is a good standard ignition coil for Priora 16 valves, the price of which is comparable to analogues. The wires to the ignition coils are an equally important component, which if it doesn’t work, you won’t go anywhere.

Basic faults

A normal Priora part should last from 50 to 100 thousand kilometers, depending on how often you start the engine. If an element of the Priora ignition system malfunctions, the following symptoms will occur:

• When accelerating, the car will jerk (as if the box is kicking in a car with an automatic transmission), or when driving in first or second gear.
• The integrity of the winding is broken. It is worth paying attention to the tip of the ignition coil of the Priora car.
• The motor "troits". This manifests itself in vibration and excess noise that appears under the hood, while traction decreases.

Design and principle of operation

So, starting the engine begins with turning the key in the ignition switch. At the same time, current must flow to the spark plugs, they give a spark to the fuel-air mixture, which is pumped up by the pump, the starter begins to rotate, causing the crankshaft to start moving. But the battery operates with low voltage electrical current.

Each coil is a small transformer. Two levels of winding are hidden under the housing of the element of the VAZ-2170 Priora ignition system. Its wires are low-voltage and high-voltage. The first ones receive current from the battery, the second ones transmit it to the spark plugs. When the current is converted, it is transferred to the spark plugs. The ECU “manages” this process, correctly distributing the force between the spark plugs.

As for how many ignition coils are in the Priora, there are 4 of them - one for each cylinder. Their work does not mix or overlap in any way. Each of them has “its own scope of work.”

Fuel cells

The first place a motorist should start looking for a problem is the fuel supply to the fuel mixture formation system. Often, clogging of elements can cause an insufficient amount of fuel to flow into the combustion chambers.

First, we check the operation of the fuel pump, or more precisely, an element such as a mesh filter. It is located on the pump itself and often becomes clogged due to the use of low-quality fuel. But, as soon as it is changed, the operation of the power unit returns to normal.

The problem may be caused by a malfunction of one of the fuel cells.

It is recommended to replace the fuel filter along with the filter screen of the gasoline pump, since in this case it becomes clogged and fuel cannot fully pass through the fuel lines. The part is placed under the rear right wheel from the bottom. The element is changed within 30 minutes.

The third element, which is responsible for supplying the fuel mixture, is the injectors. Their contamination leads to the fact that the engine begins to stall. In order to check their functionality, it is necessary to remove the elements from the engine.

Diagnostic operations are carried out on a special washing stand. If during the inspection it is discovered that there are faulty injectors, then they should be replaced. You should not install faulty parts in the power unit, as this will lead back to tripping and even greater malfunctions than the existing ones.

Manufacturers and prices of analogues - which ignition coils are better for the Priora

No one, not even AvtoVAZ, promises that the analogue will work as long as the standard model. There are a sufficient number of options on the market. It will take quite a long time to determine which is better. The following components are suitable for Priora 16cl:

• SOATE (manufactured in Stary Oskol) (article 2112-3705010-12), price – 1,200 rubles.
• MZATE-2 (article 59.3705), price - 1,000 rubles.
• Baker Priora 2112-3705010-10 – 1100 rubles.
• Fenox IC16085 (STK) – 1,300 rubles.

Performance check: how to check ignition coils on a Priora

Before you start replacing the ignition coils, you definitely need to check them and inspect them. Cracks, chips, and other damage to its body are unacceptable. If you see that the plastic is damaged, it means the part has overheated and cannot be used further.

The answer to the question of how to check an element of the 16-valve Priora ignition system is not limited to inspection. First you need to swap them and see if there are interruptions in the other cylinder. If there are interruptions, the problem is in the coil. There are several ways to use devices. To work you need:

1. Secure the car in place and turn off the engine.
2. Remove the negative from the battery.
3. Disconnect the part from the motor, and then connect a fully functional spark plug to it.
4. Turn off the fuel pump.
5. Use protective equipment against electric shock, this is a must!
6. Turn on the ignition and crank the starter. The spark plug should spark during normal operation.
7. Sometimes repair of the Priora ignition coil begins after receiving data from the ECU. The codes start with 0301 and end with 0304, indicating each cylinder accordingly. However, the problem is displayed in the coil-plug module, so the culprit will have to be found out separately.

Now we check the ignition system element on the Priora with a multimeter. For this and further work with components, models AZ-1 or MD-1 are suitable. For this:

1. Remove the part to be examined from under the hood.
2. Set the measurement switch to the “200 Ohm” position, connect the probes. The display should show “0” or values ​​close to it.
3. Using probes, the external winding is checked. Pinout – 1.3. The display should show exactly 0.08 Ohm. The error is the number that the display showed during calibration; it must be subtracted. If nothing is shown, check that the probes are accurately touching the winding. If there is contact, but there is no result, the winding is broken and needs to be replaced.
4. Set the multimeter to 2 MΩ measurement limit to test the high voltage winding. Connect the black probe to the terminal of the second connector, and the red probe to the terminal of the coil. The indicator should be 342 kOhm - but only for a cold part. It should be cooled before testing. This also requires checking the exact contact with the probe.

Remember that the winding of this spare part does not change, but the tip can be easily changed. Most often, repairs are limited to routine replacement - in order to be completely sure of the tightness of the part.

Ignition coils in the electronic circuit of Lada Priora

The ignition system on Priora differs from the usual traditional scheme of carburetor models. On old cars there was one ignition coil, and the direct distribution of impulses to the spark plugs was carried out by a distributor, which still needed to be configured correctly. On injection models of cars with electronic fuel injection, each cylinder has its own individual ignition coil, which sends an impulse to its spark plug for its cylinder.

The entire process is controlled by the ECU, an electronic on-board device, from which the signal goes directly to the short circuit. In order to correctly manage the injection process and timely send a signal to an electrical impulse, the ECU uses data from the following sensors:

• DPK - taking into account the position of the engine crankshaft, it supplies an impulse to the ECU;
• phase sensor - it signals the position of the camshaft, professionals call it a synchronization sensor;
• tachometer - from it a signal is sent to the ECU at what frequency the crankshaft rotates;
• Mass air flow sensor - by measuring air flow through the air filter, it determines the load on the engine at a given time;
• DTOZH - determines the engine temperature;
• DT is a knock sensor, its readings affect the ignition timing.

Under standard conditions, according to the ECU signal, the cylinders operate in the following cycle - 1 - 3 - 4 - 2.

That is, the impulse to the spark arrives in those cylinders in which the compression cycle ends, before the valve opens, fuel is injected and a discharge occurs, detonation occurs and the cycle continues.

The ignition coil in the general ignition system plays the role of a low-voltage voltage converter from the on-board power supply systems, battery or generator, to high voltage. Specifically on the Priora, based on a signal from the ECU, it generates a high-voltage electrical pulse on the spark plug.

Ignition coil for Priora

Structurally, an individual ignition coil differs from a common short circuit:

1. The primary winding, through which direct current flows, is located inside the secondary winding.
2. There is an inner core inside the primary winding and an outer core around the secondary winding.
3. High voltage, up to 40 kW, which is generated in the secondary winding, is transmitted to the spark plug not through high-voltage wires, as on carburetor cars, but through a tip, which consists of a high-voltage rod, a spring and a sheath that has insulating properties. In addition, there is a diode to quickly cut off a high-voltage pulse.

Individual ignition coils do not have any single, unified marking. Each manufacturer has its own designation system for electronic parts. Therefore, we must proceed from which short circuits are in greatest demand among Priora owners. One of the most popular brands is BOSCH. These ignition coils are marked - 0 221 504 473 (also found 0 221 504 461). It is believed that such reels should cover 100 thousand kilometers without failure, although in fact this is not always the case. There are many negative statements on the forums regarding the frequent failure of this particular device.

Removing and installing a coil on a Priora

To change the ignition system element in a 16 valve engine, follow these steps:

1. Park the car level, securing it with the hand brake.
2. Raise the hood and remove the negative from the battery.
3. Undress the motor by removing its plastic protective casing.
4. Find the spare part you need, and then the wire block connected to it.
5. Squeeze the wire block clamp and turn off the power.
6. Using the 10th key, unscrew the bolt that secures the part to the metal.
7. Carefully remove the spool, trying to move it vertically. It would be a shame to damage the wiring at the very last moment.
8. Remove the faulty part and replace it with a new one. Tighten the fastening bolt, connect the wire block and place the negative on the battery. Check functionality.

Causes and Effects

The reasons why the Priora 16 valve engine is tripping can be very diverse. Several systems are involved in the normal operation of the engine. Therefore, to identify the source of the problem, it is necessary to check the following systems:

• Supply system;
• Ignition;
• Sensors

Very often, it is on Priors with a 16-valve engine that the problem arises due to power problems. Therefore, you need to check it first.

The consequences of engine tripping can be the most unpleasant. Outwardly, this manifests itself as hassle. After all, the engine is unstable and shaking. Often the interior begins to smell of gasoline. Don't forget the money issue. The car noticeably increases its appetite and you have to visit the gas station much more often. It's much worse that it leads to more serious damage.

First, the fuel settles on the cylinder walls and seeps into the block, mixing with the oil there. Due to this, the lubrication of the unit deteriorates, and parts wear out faster. It is also possible for a water hammer to form if a sufficient amount of fuel accumulates in the cylinder. In the simplest case, the remaining working cylinders bear a large load. As a result, their elements fail earlier. In any case, it is necessary to eliminate this problem in a timely manner.

Before you begin more specific troubleshooting, perform diagnostics using a laptop. This will help you determine which cylinder is not firing. Typically, such errors are recorded in the memory of the engine control unit. Having determined where the flash skip occurs, start working.