EUR from Priora for VAZ 2109 (2108, 2110 and other early models)

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The factory did not provide for the installation of electric power steering on the VAZ 2109 model and other classics. EURs have become available on more modern models.

Appearance of the device

What is not provided by the factory can be installed by yourself.

Usefulness of the system

This statement is especially true in large cities densely packed with cars. Parking in a cramped courtyard of a high-rise building late at night in the dark under the critical comments of your neighbors is quite difficult if you have not installed electric power steering on your VAZ 2109. Try to cope without power steering in a dead traffic jam, when a slightly more promising space has become available in the next row and you need to turn it out faster than your neighbor turn the steering wheel to the right all the way, turn it back 15 centimeters, turn the steering wheel all the way to the left, move it forward 20 centimeters, turn it again, turn it back again, turn it out again and drive into the vacant space under the competitor’s nose.

The intensity of automobile life in megacities has recently led to a change in the rules. Just 3-5 years ago, the phrase “I bought a car” meant purchasing a car without power steering. And recently, this means purchasing a vehicle with such additional equipment.

Disadvantages of power steering and electric power steering

Many car owners prefer installing electric power steering on the VAZ 2114 as a replacement for the standard power steering. However, is such a decision justified from a practical point of view?

Connection

To answer this question, it is necessary to consider not only the positive aspects of this or that amplifier, which we have already done, but also point out their main disadvantages.

Article on the topic: Crankshaft position sensor (CPS) ON VAZ 2114: checking, errors and replacing the sensor

What is better for the VAZ 2114? Let's try to figure this out.

1. The hydraulic booster does not allow additional fuel savings, but the efficiency of the electric booster is sometimes too low.
2. The hydraulic booster has a weak element - the pump. He has to be checked regularly to monitor his condition. It so happens that on the VAZ 2114 this component is not reliable.

With this short list the list of shortcomings can be completed. But it is worth paying attention to some nuances.

The choice between electric and hydraulic boosters

Compelled by the realities of road practice and the vagaries of automotive fashion, owners of used cars followed the buyers of new cars. It is for them that the question of which controls to choose is especially relevant. The owner of a used “Nine” must take into account everything - from the price of the device and the cost of maintenance to the possibility of installing the unit yourself. Recently, statistics on the choice of owners of used cars has noticeably shifted towards an electric unit. The advantages are obvious:

• Electric power steering is much more compact than hydraulic power steering (power steering). It takes up virtually no space in the engine compartment.
• It is much easier to install. No hoses or belts required. The EUR is integrated into the steering column and is powered by a battery.
• The electric booster is more economical. It only works when it helps turn the steering wheel, while the hydraulic booster constantly pumps fluid.
• EUR is cheaper than power steering. This says almost everything for the owner of a used Nine. Together with the possibility of installing a power steering wheel for a VAZ 2109 with your own hands, this makes the choice almost no alternative.

When the fundamental choice is made, the eyes of many VAZ 2109 owners turn to Ladas. The temptation is strong to use something from the arsenal of “close relatives”. And this is quite possible. It turns out that the EUR from the Lada Priora fits the VAZ 2109 almost without adaptation.

Characteristics

The ESD serves to reduce the force applied to the steering wheel required for maneuvers.

It is optimal for the VAZ 2109 to install an electric amplifier borrowed from the Lada Priora. New AvtoVAZ models are produced on the basis of old ones, so the parts are perfect for nines that have not been produced for a long time.

When choosing an EUR for installation, make sure that it meets the following characteristics.

ESD from Priora
The choice in favor of just such an electric amplifier for the VAZ 2109 is due to its advantages:

• Installation is quite easy;
• The ESD will require a small amount of energy to operate;
• Eco-friendly device;
• Adapts perfectly to AvtoVAZ classics, including nines;
• Allows you to drive comfortably even at high speeds.

VAZ 2109 injector and carburetor

Without adaptation - this is for the injection "nine". In the case of a carburetor engine, everything is not so simple. The normal operating mode of the EUR involves the use of speedometer and tachometer readings in electronic format, which are not available with a carburetor engine. We have to emulate these signals.

In extreme cases, the steering can do without a signal from the speedometer. The device is used to turn off the power steering when reaching a certain speed. If the power steering does not turn off, nothing bad will happen other than a slight decrease in fuel efficiency. If you don’t want to lose this function, you can install a sensor from an injection engine to a carburetor one.

The tachometer signal is used to turn off the power steering when the engine is not running. The absence of this function will quickly drain the battery - it is better to emulate the required signal. There are three known methods:

1. Removing the signal from the ignition coil through a diode limiter, which transfers the signal from 300V to the 5V level. The limiter is mounted in the engine compartment, in severe temperature and moisture conditions. This requires some caution.
2. Using a Hall sensor signal. The signal will be in the range of up to 12V, it can be safely brought into the cabin and processed using the controller. To avoid interference in a long wire, you can use twisted pair.
3. Manufacturing a non-contact induction sensor placed on the high voltage wire of the ignition system. A voltage of 30KV induces an electromotive force in the sensor coil, and this signal can be sent to the controller.

In the worst case scenario, you will have to connect the power steering cable to the ignition switch and manually ensure that the ignition is turned off in a timely manner when the car is parked for a long time.

Installation

To change the standard steering gear to an electric steering gear, you will need to purchase the following kit:

• New electric booster;
• Wiring kit for connecting the amplifier;
• Installation plate (you can find it on the market, but some people make it themselves);
• Shortened steering shaft driveshaft;
• Protective casing for “ten” with Europanel;
• Steering wheel (it’s better to take one from Kalina);
• Emergency button (located on the panel).

Replacement kit

That's it, when all the necessary components are ready and you are ready to work, you can begin.

1. Since we are talking about working on the electrical system, be sure to remove the negative terminal from the battery.
2. Remove the steering wheel, remove the protective cover and steering column switches. Don't forget to remove the connecting block along with the switches.
3. Unscrew the dashboard trim and remove the instrument cluster. This way you can then connect the control wiring from the electric amplifier.
4. Remove the ignition switch. Be careful here. Many people in a hurry tear off the splines of the fastening bots.
5. Remove the steering shaft.
6. Now in front of you is a disassembled structure, where the rather long studs clearly stand out. They should be shortened. Otherwise, the pins will rest against the new electric power steering mechanism.
7. Install the adapter plate. For its installation, the front nuts will fit the old ones. In this case, be sure to replace the rear bolts. Their size should be 4.8 by 50 millimeters and fit 10 keys.
8. If you couldn’t find the mounting plate based on the drawings below, you can make it yourself.

• It's time to connect the wiring.
• The practice of VAZ 2109 owners shows that it is most convenient to route the wiring to the battery through the holes intended for the optics hydraulic corrector hoses.
• The rest of the wiring goes to the dashboard, where the connections should be made according to this diagram.

• Secure the electric power steering driveshaft to the rack, but do not tighten the fixing bolt. We are trying on the electric power steering. The cardan that comes with the kit is slightly inappropriate in length. The best solution here would be to increase the mounting sockets on the amplifier. This will allow you to move it towards the cardan.
• Reassemble the column and instrument panel in the reverse order of dismantling.
• Never forget to connect the connectors to the amplifier's command block.
• Return the negative wire to the battery, start the engine and check how the Priora electric power steering works on your nine.

Installation process

By installing the EUR from Priora on a VAZ 2109, the position of the steering wheel itself will shift by about 5 centimeters towards the driver. The steering wheel will also move down. Therefore, the position of the chair will have to be changed slightly.

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What is a steering rack

There are power steering and electric power steering. They serve to make the steering wheel easier to control and make it easier for the car owner to control the car. The power steering on the VAZ 21099 is based on the use of fluid, which helps the steering wheel to be more maneuverable.

Advantages of electric power steering compared to power steering:

installed directly on the shaft, it does not need a separate place in the car;

much more economical to use, since the power steering is turned on when using the steering wheel, and the power steering works constantly;

Disadvantage of electric power steering: it can only be installed on light cars; it is not suitable for trucks.

Repair and replacement

The operation of a machine, like any other mechanism, depends on the proper functioning of all its systems. The failure of one will undoubtedly affect the performance of the others - this is the principle of a chain reaction. The steering rack must be in good working order, as defective steering creates a very dangerous driving situation. It is not allowed to operate the machine if a part is broken.

Replacing the steering rack on a VAZ 21099 is not so difficult, but if you have absolutely no skills in repairing a car, it is better to rush to a service center. Of course, you can replace the part yourself, but it’s more convenient to take a friend to help.

1. To replace the rack, you need several mounting options, suitable tools and wrenches.
2. First, you need to put the car on the handbrake and put a stop under the rear wheels, just in case.
3. Remove the battery terminals.
4. Raise the car using a jack.
5. Unscrew the bolts on the wheels with a wrench and remove them from the car.
6. After removing the wheels, it is necessary to lubricate their nuts with a special solution.
7. Inside, you need to find the universal joint locking bolt and unscrew it.
8. Unscrew the absorber located under the hood of the car to facilitate access to the rack.
9. Loosen the nut and carefully knock out the absorber. It is very important to remember not to hit the threads.
10. Carefully unscrew and remove the screws of the VAZ 21099 steering rack.
11. Carefully remove the steering rack, starting from the right side.
12. We remove the steering rack from its pins.
13. The task is completed - the rod is in your hands. Now you need to check the presence and count the number of screws.
14. We take a new rail in our hands and pour a special solution into it.
15. In the reverse order, screw the ends onto the new rail. It's worth remembering that they are different from each other, so don't confuse them!
16. Now you can install the new part in place of the old one. This is where you will need the help of a friend, since it is very difficult for one person to insert the pins correctly when installing and replacing the slats.
17. A locking bolt should be inserted into the installed rail. It has the necessary hole for this purpose.

For any breakdown in your car, it is recommended to consult and diagnose a specialist. Experienced technicians will repair the vehicle quickly, efficiently, and on time. They will select the right part and provide a guarantee for its replacement and repair. You will not waste any of your energy or extra time.

If you do not know what is attached where and how one part is replaced by another, then it is better not to undertake such work yourself, otherwise you will not fix the problem, but will cause significant damage to your vehicle.

Signs of problems with the EUR

The main sign of a problem with the electric power steering is the activation of an indicator on the instrument panel; the indicator looks like a steering wheel with an exclamation mark. Depending on the situation, the EUR turns off automatically, but if this does not happen, then this can be done manually to prevent accidental non-standard operation and the occurrence of a critical situation. To turn it off, remove the fuse located to the left of the steering wheel.

Automatic shutdown of the electric steering system is possible in the following cases:

1. Reducing the network voltage below the permissible rating
2. No signal from the speed sensor
3. Exceeding the engine speed above normal

The latter causes are caused by faults in the sensor system or damaged cables and can be easily resolved by replacing the sensors or restoring the circuits.