The heating system in the cabin of the 2114 model is not a reliable component of the car. Active use of the heater during the cold season leads to regular breakdowns of the structure. Failure of the stove fan, leaking faucet, malfunction of the thermostat - this is an incomplete list of possible breakdowns. The stove tap is the weak point of the structure, because It is made of plastic, which loses its shape over time. Independent replacement of the VAZ 2114 stove tap is often accompanied by the installation of new type taps. In the article we will analyze the causes of the breakdown and provide instructions with explanations for doing the repair yourself.
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Signs of malfunction of the VAZ 2114 heater valve
Most often, a malfunction occurs in the cold season, when the interior heater is used at full capacity. Breakdowns are also possible in warm weather. Constant use of the temperature regulator in the cabin leads to rapid wear of the plastic parts of the faucet. We list the main symptoms of a malfunction of this element:
- The appearance of a greasy coating on the surface of the windshield. This is typical when there is antifreeze leaking from the valve body. In addition to the fact that in the event of such a breakdown, the warm airflow ceases to function normally, antifreeze vapors have a negative impact on human health;
- Stopping the supply of warm air indicates that the regulator is jammed inside the faucet;
- The main sign of a malfunction is the appearance of a coolant leak under the carpet on the driver's side. It is recommended to check this area for leaks regularly.
Useful : Design of the VAZ 2114 stove
In addition to stopping the supply of warm air, a broken faucet leads to a constant leak of antifreeze. This increases the risk of reducing the coolant level to a minimum, which is very dangerous for the engine. Sooner or later, replacing the heater tap on a VAZ 2114 is necessary on any car of this model. Even timely maintenance of the heating system does not guarantee that this unit will not fail. It's all due to a design miscalculation by the engineers. Making a faucet that constantly contains hot liquid from low-quality plastic is a clear miscalculation. Minimal deformation of the valve body leads to antifreeze seeping into the driver’s feet. Also, owners of model 2114 complain about the lack of o-rings and rubber gaskets in the design of the regulator. Instructions on how to change the stove tap will be presented below. First, let's look at the necessary list of tools that will come in handy when replacing an element with your own hands.
WHICH TAP IS BETTER?
All owners of VAZ 2114, 2115 and other models unanimously claim that the original faucets that are equipped with the stoves of these cars are the most unreliable. The locking mechanism is a rubber membrane. Aluminum housings are susceptible to corrosion and quickly turn sour. True, the price of these parts is low - 80-120 rubles. Apparently, the price is calculated on the fact that the faucets will change every season.
Ceramic faucet is considered the most wear-resistant
But car owners don’t want to crawl under the car every time it gets cold, spoil their shoes with leaking antifreeze, and freeze inside the car. Yes, and this is a troublesome task - replacing the faucet on the VAZ 2114 stove. Therefore, motorists give preference to more reliable models of faucets:
- ceramic, their locking mechanism is made of ceramic plates, and the body is made of high-quality plastic;
- Ball valves, the locking element of which is a ball with holes.
Most VAZ 2114 owners prefer the Yavva ceramic faucet as one of the highest quality and most reliable. Although these models have lower heat transfer than ball models. The latter are susceptible to oxidation, but to a lesser extent than the duralumin models of AvtoVAZ cranes.
Necessary tool
Difficulties that may arise when performing work are associated only with the inconvenient location of the faucet. Otherwise, the replacement process will not cause problems. Before starting work, prepare the following tools and materials:
- Pliers for removing stuck pipes;
- Flat and Phillips screwdrivers;
- New heater valve for VAZ 2114;
- A rag for cleaning up smudges and a small container for draining antifreeze;
- Canister with new antifreeze for topping up;
- A set of wrenches (wrenches 10 and 13 are useful).
To simplify the work, drain the antifreeze from the car radiator in advance. Next, proceed to study the instructions on how to replace the stove tap with your own hands.
Node malfunctions
There are three faults in the valve of the VAZ-2114 stove, but if they occur, the unit must be replaced, since it cannot be repaired.
Crane breakdowns:
- Incomplete opening/closing of the channel. It occurs due to wear at the junction of the axle and the shut-off valve. As a result, a significant backlash appears, due to which, even when the valve lever is moved to the extreme position, the damper does not open the channel completely. This malfunction negatively affects the performance of the stove.
- Gate valve jammed. This happens because the tap has not been used for a long time and the moving element has become stuck and does not move. Attempts to open with force result in the rupture of the connection between the axle and the valve or the formation of strong backlash, which causes the valve to also become inoperable.
- Loss of tightness. The tightness of the unit is ensured by seals on the damper axis. If these elements are worn out or damaged, the liquid flows out through the mounting hole of the axle. This malfunction does not affect the performance of the stove, but antifreeze leaks will appear in the interior.
The first two faults can only be identified visually by removing the valve from the car. As for the loss of tightness, a symptom of a breakdown will be traces of antifreeze on the floor mat in the cabin. And since a leak can occur due to leaks at the junction of the pipes with the heater elements, when leaks appear, first of all, find the location of the leak. If the faucet leaks, there will be traces of antifreeze on the body.
Where is the heater valve located on the VAZ 2114?
The location of the heater tap is such that to remove it you need to act both inside the car and under it. The faucet itself is hidden near the heater radiator and is visible after removing the side decorative panel trim on the driver's side.
Without removing the pipes leading to the tap, it will not be possible to remove the body from its seating location. To freely dismantle the faucet, you need to understand where the pipes are located under the hood.
As you can see in the photo, in addition to the two pipes, nuts prevent free dismantling. If you rarely unscrew them, they can turn sour and stick. Therefore, before starting work, you should treat their surface with lubricating liquids, for example WD-40. Breaking off these studs will seriously complicate the job, so take your time and let the lubricant work for 10-15 minutes.
Useful : How to remove the heater motor on a VAZ 2114?
How to identify such causes of failure?
The first, as well as the second reason, can be very easily recognized, even visually. To do this, it will be necessary to remove this valve from the car itself. The third reason, namely loss of tightness, can only be recognized because there will be small traces of antifreeze on the carpet located at the bottom of the cabin. Due to such leaks, there may be leaks that are located in the places where some pipes connect to the main heater.
If such traces appear, then you should find the leak location. Then, if a drip appears from the tap, then this will be a clear sign that traces of antifreeze will be on the body.
Replacing the stove tap
After preparing and processing the rusty nuts, you can begin to remove the element. If you are planning to install a new faucet, consider a modified sample with metal elements. Follow these steps as you work:
- Unclench the clamps on the pipes under the hood and drain the remaining coolant into a container.
- Inside the car, unscrew the decorative panel trim on the driver's foot side.
- Remove the internal pipes and also drain the remaining antifreeze.
- To release the faucet, take a spanner and crawl under the car to access the mounting nuts. Unscrew them.
- To remove the membrane cable you will need pliers. Also, for better access to the cable, you can remove the panel trim on the passenger side and climb from there. There is no need to remove the glove compartment.
- The last step is to remove the faucet from its seat.
There is no point in repairing a worn faucet, because... You will not be able to achieve a perfect fit of the elements to each other. The best repair option in this case is to install a new type of regulator. Poor responsiveness of the temperature controller may be caused by work performed. Therefore, it is recommended to change the heater valve cable when it stretches. Also, when doing this kind of work, you can replace the pipes going to the cooling radiator. The heating system is an important element in the cold season, so it is better to keep it in good condition. The control cable can be left as old, but only if its length is maintained. A stretched element will not allow you to accurately regulate the air supply temperature.
Useful : What to do if the stove does not work?
Checking the stove tap
The best way to check the faucet for leaks is to wet the carpet under the feet of the driver and passenger. At first, the worn part will not make itself felt, but only until the antifreeze leaks out under your feet. It’s difficult not to notice the smell of antifreeze in the cabin.
Mechanical failures will make themselves felt during operation. A jammed temperature regulator, lack of response to moving the handle, or lack of tension on the regulator are a clear sign of a broken cable or broken plastic eyelet.
Which heater tap to choose?
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When an old part wears out, it is logical to purchase a modified version of it to prevent problems in the future. Regulator options with metal and ceramic parts are now available for sale. They are more durable and resistant to temperature. Let's consider several options:
- A modified spare part from AvtoVAZ with article number 21080-810115000 is available in stores at prices ranging from 180 to 250 rubles . Low price, presence of metal elements, average quality;
- A ceramic faucet from Luzar with article number 2108-8101150 is sold at a price of 300 to 500 rubles . High quality, ceramic elements, average price;
- The Tsn-Citron company, with article number 8.5.2, offers a budget option for 170 rubles. Medium quality. There are metal elements.
We recommend that you do not save on purchasing a new element of the heating system, because... its unexpected failure will bring a lot of problems.
Why might a faucet break?
With the arrival of stable warming, all car owners close the stove taps, moving the temperature regulator to the left all the way. During warm seasons, when the stove is not used, the faucet may turn sour. With the first cold snap, they start using the tap again, which causes a leak. Therefore, many experienced car owners check the operation of the tap at the end of autumn, since in most cases it needs to be replaced. In addition to replacing the element itself, experts recommend doing the same with the furnace cabin filter, which is probably clogged with all sorts of debris, which will weaken the flow of hot air from the furnace when it is turned on.
When purchasing a new product, you will be given several options to choose from, which you see now in the photo.
- standard, in factory format - costs up to 100 rubles. The operating principle of the device is based on a rubber membrane. Practice proves its unreliability and short period of operation - it oxidizes quickly. Therefore, experts do not recommend installing it;
- ball - definitely better than the previous option. Instead of a rubber membrane, balls with holes are used. The ball valve also oxidizes, but is more reliable than the standard one;
- ceramic is the most reliable and expensive option, which is recommended to everyone. The faucet has a plastic body, but the shut-off element itself consists of a pair of ceramic plates and does not oxidize. The only disadvantage of this product is the throughput, which is significantly inferior to a ball valve - the heat transfer is lower.
