Which thermostat is better to install on a VAZ 2114

Installation of a thermostat from Grants 2190 on a VAZ 2114

Hi all!
In general, I’m tired of freezing in 2114, the stove takes a long time to heat up, but at no time. In general, it blows barely warm, in modes 2.3, you can completely forget them. I looked at circuit 2190 and liked the fact that the stove in this circuit is constantly in a small circle without losses anywhere, as if it were powered in parallel. Than the 2114 scheme where the stove plays the last role.! In general, you can install the thermostat in two ways, both work, one is expensive, the other is cheaper. We only buy the Becher thermostat itself. (BeHr) is the original. and here we decide for ourselves: -Expensive option - Buy the Lower pipe 2190, pump pump pipe 2190, expansion tank pipe 2190, two studs 8*80 or two bolts 8*75 -Cheap option - Buy the Lower pipe Lada Kalina 1118, two bolts 8* 75 or two studs 8*80. I settled on a cheap one, since it was an experiment and I didn’t want to invest expensively) In general, when the antifreeze was drained and the old one was dismantled

We clean the surface of old sealant or gasket and unscrew two studs either with two nuts, a stud driver or pliers or gas pliers, whichever is convenient.

After which I disassembled the thermostat itself

and sharpened the thermoelement itself by 2mm

Or buy the Gates TH00391 G2 (91C) thermocouple and install it. I’ll explain why, after reading the forum and reviews about the BeHr 2190 thermocouple, it turned out that its operating temperature is 85 (+-2), but from people’s experience it begins to open at 76 and in general that with it the car will not warm up in winter and the operating temperature generally drops from 70 to 80 when driving on the highway, hence increased fuel consumption, etc. If you are interested, you can read it yourself. In general, BeHr, unlike Luzar and other manufacturers, are interchangeable with Gates TH00391 G2 thermoelements and there are others, there is a forum about this. I personally sharpened the rod to 2mm of the original thermoelement. Now we take two studs or bolts,

no matter what, I took two bolts and screwed the thermostat to the block.

Then we take the lower pipe of the viburnum

By the way, it is similar to the old pipe system, only one-piece

and install the Grants 2190, nothing complicated. Then fill in antifreeze and start it. After warming up, this is the operating temperature:

In general, the subspecies Results: the stove began to heat up very quickly, already at 40-50C it blows decently warm air, and at 90 hot air. At idle, the car also blows hot and regardless of the position of 2, 3, the heater, it always blows hot!) In general, everything regarding heat, warming up, heating, heater speed position, there are only advantages! As for the minuses: I don’t know how reliable this scheme is, because if the stove leaks and turning off the tap, it’s not a fact that the engine won’t start boiling and will the large circle even open? What about summer? it’s so simple, remove the cable from the faucet, they remain only on the dampers and when the lever moves towards cold air, the damper closes the heater radiator and takes air from the street and hot air does not enter the car. In general, everything is working well so far!)

We install a grant thermostat on a VAZ-2114 with our own hands

When using domestic cars in winter, you always remember the warm words of the designers, who are so concerned that the driver and passengers do not suffer from heatstroke. Nevertheless, some owners of the VAZ-2114 do not agree with this position of the engineers and would like to slightly improve the interior heating. Installing a thermostat from Granta on a VAZ-2114 is one of the methods to make the car interior warmer in winter.

Features of the replacement

It is necessary to immediately make a reservation that it will be possible to install a thermostat from Granta on a VAZ-2114 only if several changes are made to the design. “Granta” is a relatively modern car, but the VAZ-2114 is a car that was developed in the 70-80s (more than 30 years ago). Therefore, some elements are not interchangeable. And this is quite normal, but not for a Russian person.

There is a way out of any situation. You can install a thermostat from Granta instead of a standard one, and this will require relatively few tools. The advantages are obvious: wear of the engine and its systems is significantly reduced. When metal elements operate at high temperatures, wear occurs more than at low temperatures. The thermostat from Granta simply does not allow the engine to get too hot. On the other hand, the efficiency of the interior heater increases - comfort in winter improves.

Why install a Granta thermostat on a VAZ-2114?

Thermostat Lada Granta

Any adjustments that are made to the design and interior heating circuit of front-wheel drive VAZ cars are designed to either improve ventilation or improve heating and raise the temperature in the cabin in winter. Almost since the appearance of the first 2108, no changes were made to the cooling system and its architecture , which means that heating the interior remained ineffective.

With the advent of the modernized cooling system of the Lada Granta, the situation has changed for the better and here's why.

Cooling system VAZ-2114

If you look closely at the coolant circulation diagram in a Samara family car, it becomes clear why the heater radiator warms up last. The diagram shows that the cold (small) circle of the heating system does not include a heater radiator; more precisely, the heater radiator is connected in parallel , which certainly does not contribute to the rapid heating of the heater.

At the same time, we also take into account the ability of thermostats to react incorrectly to temperature and leaks in the air ducts, so until the engine warms up and the large full circuit of the cooling system turns on, you can’t even dream of heat in the cabin.

Cooling system for Lada Granta

The thermostat from Granta will allow you to implement an antifreeze circulation scheme similar to Granta’s, and for this you will simply need to install a thermostat from 2190 and purchase some small items.

Nuances when upgrading the VAZ-2114 heater

Let us emphasize that the need to install a thermostat from Granta on the VAZ-2114 and other cars of the Samara family is dictated by the poor performance of the standard stove with the same set of cooling system elements, excluding the thermostat.

Preparatory work

To install the Lada Granta thermostat on a VAZ-2114, you need to completely remove the old one. You start the repair with the following steps:

Completely drain the liquid from the cooling system. To do this, alternately unscrew the plugs at the bottom of the radiator and on the engine block. Be sure to place a container under the engine - a cut 10-liter canister or pan. Preferably clean if you plan to reuse antifreeze.
Free up access to the thermostat by removing the air purification filter.
Loosen all the clamps that secure the thermostat to the pipes.
The first to remove are the pipes located below - those that connect the expansion tank to the radiator.
Unscrew the nuts that secure the thermostat housing after removing all the pipes.
You can remove the element.

You won't need it anymore, so you can throw it away or donate it to someone in need. Be sure to check the condition of all pipes, get rid of any remaining old sealant, and thoroughly clean all surfaces. The presence of cracks and cuts on the pipes is unacceptable - otherwise, replace them.

Replacing the VAZ-2114 thermostat with a VAZ-2190

A standard set of tools will be useful for the work, and in addition we will change the coolant (optional), we can also replace the expansion tank and leaking hoses, if any.

The work takes place in the following order:

We drain the antifreeze from the system into a container prepared in advance.

Drain the coolant

Removing the air filter

Removing the old thermostat

We screw in new studs 85 mm long

Installing a new grant thermostat

Tighten the clamps and let the sealant set

By and large, the work is finished and now the interior of the VAZ-2114 will be warm.

Video about replacing a VAZ-2114 thermostat with a Grantovsky one

What is needed for replacement

Before installing a grant thermostat on a VAZ 2114, you should purchase all the necessary parts and materials.

These include:

the actual thermostat for Grant (to avoid mistakes, you can write down its catalog number - 21900-1306010-00);
new thermostat gasket;
a pair of M8 studs 85 mm long;
lower radiator hose for Grant;
tee for coolant return flow;
clamps of the appropriate size;
sealant (necessarily heat-resistant).

In addition to all of the above, it is recommended to purchase new coolant and replace it in the entire system after making the upgrade. This operation is not mandatory, but highly desirable.

Disadvantages of this method

It is worth noting that when installing a Granta thermostat, you must ensure that the stove faucet is open both in winter and in summer.

The inconvenience is that in order to limit the flow of warm antifreeze when starting the engine into the cabin, in the summer you will have to remove the thermocouple from the thermostat housing, although many do not do this, but simply do not turn on the heater fan. Don't freeze in the salons of your Samaras and good luck with the renovation to everyone!

Fuck you, you're a theorist, the first diagram from a VAZ 2112

Yes, the first scheme is not the right coat, unless of course there is a thermostat on your 14 from 10 or viburnum. ONLY ONE BUT, THE OVEN TAP NEEDS TO BE REDOED, I.E. REMOVE THE VALVE AND INSTEAD A TUBE. THERE IS NO OVEN TAP ON THE GRANT. THE HEATING IS TURNED ON BY A VALVE LOCATED IN THE STOVE CASE.

Tee from what? Which? Dimensions?

I installed a thermostat on the VAZ 2115 and on the highway it stays at exactly 84 Gy. If I turn on the stove, it pumps in at 2 Gy, that is, it stays at 82. But if the car is running in neutral, the temperature rises and the car starts to boil at 90!! although this is its operating temperature. maybe I did something wrong!? I took the throttle heating from the radiator heater, through a tee. This is where I may have made a mistake

At 90 degrees WHAT is it boiling for you?! The boiling point of antifreeze in a sealed cooling system is 112-118 degrees. The water is open, and even boils at 100! Do you have alcohol in your system?!

Ah, the devil got me wrong, from another topic. Always open until 85. It is necessary to reduce the cross-section in a small circle. Once upon a time they placed a crane on a small circle.

Thermostat from grants for VAZ 2109 injector. This question: I installed a thermostat from grants for 2109

Hello！ Guys, here’s a question: I installed the thermostat from Granta at 2109. And everything seems to be fine, but summer is approaching, and you can’t turn off the stove tap, because there is a small circle through it. Maybe someone did something like this? How did you resolve the issue? PS carburetor engine.. Thermostat from grants for VAZ 2109 injector.

22 comments on “Thermostat from grants for VAZ 2109 injector. This question: I installed a thermostat from grants at 2109 "

I did the same thing, I think I can save myself with a flap, but I don’t think it will help, I’ll have to farm with an intermediate pipe and a tap for the summer.

Take the pressure off him and that’s it. Only the air damper will work.

By the way, is it hot in your cabin or something, it seemed to be warmer for me, but a friend set it to 12; the air burned his hand, but mine didn’t.

If you completely muffle the river, remove the two hoses and connect them through the fitting

You open the damper when it’s cold and everything will be fine, no need to do anything collectively

Make a jumper on the half-turn tap in front of the stove tap, open the jumper, close the stove tap and that’s it

There you need to install an electronic valve with 3 inputs

Oleg, the hand endures, but it’s very hot

Sergey, what about the radiator? It will be constantly hot

Vitaly, I think it’s better not to come up with

If you open the damper, air will not flow through the radiator.

On the grant, the radiator is always hot, everything is fine, by the way, it depends on the pump (for the grant itself) with a metal impeller it is cooler

I've been driving a chepyrka like this for 6 years now.

Sergey, I heard somewhere that a heated radiator also fries well without any airflow

Sergei, I decided to redo everything then and installed a turbocharged pump

Doesn't fry anything

And it works fine on the original pump

Why don't you redo this thermostat from the IbatsCA grants! The Polish metal Incar at 87 degrees copes with its task quite well! At -40 we drove without any cardboard on the 99 high panel, and did not freeze, the only thing is that it partially tightens the glass. And so the DaAZ radiator, normal pump, faucet fully open and the damper is taped, there are no gaps. And also, when the crane was installing a new cable, I didn’t put a new cable on it. I moved it with my hand for the winter (opened it), closed it for the summer, otherwise I noticed that you jerk it back and forth, then it starts to leak and the valve in it fucks up

How to install a thermostat from Granta 2190 on a VAZ 2114?

Lada 2114 Samara

Hi all! In general, I’m tired of freezing in 2114, the stove takes a long time to heat up, but at no time. In general, it blows barely warm, in modes 2.3, you can completely forget them. I looked at circuit 2190 and liked the fact that the stove in this circuit is constantly in a small circle without losses anywhere, as if it were powered in parallel. Than the 2114 scheme where the stove plays the last role.! In general, you can install the thermostat in two ways, both work, one is expensive, the other is cheaper. We only buy the Becher thermostat itself. (BeHr) is the original. and here we decide for ourselves: -Expensive option - Buy the Lower pipe 2190, pump pump pipe 2190, expansion tank pipe 2190, two studs 8*80 or two bolts 8*75 -Cheap option - Buy the Lower pipe Lada Kalina 1118, two bolts 8* 75 or two studs 8*80. I settled on a cheap one, since it was an experiment and I didn’t want to invest expensively) In general, when the antifreeze was drained and the old one was dismantled

We clean the surface of old sealant or gasket and unscrew two studs either with two nuts, a stud driver or pliers or gas pliers, whichever is convenient.

After which I disassembled the thermostat myself and sharpened the thermoelement itself by 2mm

After which we take the lower pipe of the viburnum; by the way, it is similar to the old pipe system, only it is solid and we install it according to the Grants 2190 family, nothing complicated. Then fill in antifreeze and start it. After warming up, this is the operating temperature:

VESKO-TRANS.RU

VAZ 2114 Grant thermostat. Since the oven wasn't roasting the figs and I just didn't change anything, I didn't do anything. Here I read the idea that it could set the thermostat from grant to 14, that the circulation of chilled water would improve, and the heat would finally leave the furnace, well, in general, you can forget about overheating the engine. I would like to ask if the people who put it or can describe it directly? Carefully, how to connect, well, in general, people’s thoughts on this topic! When this thermostat is installed the car heats up perfectly and circulates throughout the system, there is one thing but the heater mixer will be on all the time and the cooler intake damper will regulate the heat and cable on the mixer. You can simply turn it off and even the tap can be cleaned. how will the panel be?

Lada 2114 2011, petrol engine 1.6 l., 85 l. S., front-wheel drive, manual transmission. spare parts

I advise you to look at the temperature damper, or how in 10k the damper does not close through vacuum

I have the end of the 10th, the plate also does not heat up, I found the first reason, the faucet is leaking and something grunts in the radio area when accelerating)

The air remaining in the furnace hoses was also constantly grumbling. He puts the pump on the Hoffer turbine and does not throw all the air out of the system, but forces the return from the radiator into the tank

Thermostat Lada Granta for VAZ 2114 cons

Greetings to all friends. There have been no posts for a long time, and there wasn’t much to write about. We still drove almost every day and there were no problems until yesterday. I was driving calmly, not bothering anyone, and suddenly my gaze fell on the engine temperature - the needle was in the red zone. I looked at the BC and the temperature was as much as 105 (on the BC the temperature for turning on the fan was set to 100). I stopped immediately and reached under the hood. All the antifreeze was squeezed into the barrel and cold air began to blow from the stove. As things turned out, the thermostat jammed and I ended up having to replace this unit. It’s good that the temperature outside is above zero. So, I surfed the Internet and saw a lot of interesting posts about the implementation of a thermostat from Granta.

So I want to try this system. I just tried a lot and the new 16-valve blower just doesn’t want to warm up properly. Maybe someone put

According to such a system, a Grant thermostat.
Thank you in advance. Peace
for everyone . Good luck to you and your four-wheeled friends.

The thermostat from Granta is installed on the VAZ 2110 and Priora to warm up the engine faster, especially when driving the “tens”. The thermostat is responsible for the redistribution of liquid flows in the SOD. Experts include frequent leaks and problems with the expansion tank as the disadvantages of this system on the VAZ 2110. Such malfunctions can be eliminated using tuning. The device of the SOD is preliminarily studied.

Installing a new element

The procedure is carried out in the reverse order of removal. When replacing a thermostat from Granta on a VAZ-2114, adhere to the same requirements as when installing a conventional one:

Apply a thin layer of silicone sealant to the surfaces of the thermostat that will be in contact with the pipes. The sealant must work at temperatures up to 130 degrees.
It is advisable to apply a thin layer to ensure better insulation of the system. Small gaps may appear, so they need to be covered with something.
Reinstall the thermostat, be sure to place a gasket underneath it and apply a thin layer of sealant to it.
Wait 20-30 minutes.
Carefully put on all the pipes and tighten the fastening nuts with slight force.
Tightening can be done no earlier than after 30-40 minutes, when the sealant has hardened a little. This will prevent it from getting inside the cooling system.
You can pour liquid into the system no earlier than after 2-4 hours. This time is enough for the sealant to take its working form.

At this point, the installation of the Lada-Grant thermostat on the VAZ-2114 is completed, you can enjoy its operation. But first there are a few more steps you need to complete.

Technical points

Regardless of the vehicle brand, the ODS consists of the following elements:

Water pump.
Electric fan.
Radiator.
Expansion tank with plug.
Thermostat.

On a cold engine, the valve of the latter device closes the pipe going to the radiator. In this case, coolant circulation is observed in a small circle (without a radiator). On the “ten”, the radiator, intake manifold, BDK, and liquid chamber are involved in a small circle. At a temperature of 87°C, movement of the thermostat is observed. This opens the main pipe. The liquid begins to circulate in a large circle. If the temperature reaches 102°C, then the pipe opens completely. The valve stroke is allowed within 8 mm.

SOD Priors and Grants are liquid, closed and with forced circulation. The liquid enters the thermostat through a deposit and a special jacket.

When and in what cases should you change the thermostat?

Basically, the thermostat needs to be changed when it stops performing its function (this is logical) - namely, it jams or just starts to jam in one of the positions. It has only 2 positions - open and closed. Initially, while the engine is still cold, the thermostat is in the closed position, i.e. The coolant circulates only in a small circle (cooling jacket of the engine block). Upon reaching a certain temperature (80-90 degrees), the thermostat opens and allows antifreeze (antifreeze) to circulate in a large circle (through the cooling radiator).

If the thermostat is stuck in the closed position, hot fluid will not enter the radiator and the engine will overheat. If it is open, on the contrary, the liquid will constantly circulate in a large circle and the engine will be very strong! It takes a long time to warm up, which is also not very good.

Based on this, we can conclude that a stuck thermostat needs to be replaced.

Modernization of the "tens"

First, the old thermostat is removed from the “tens”:

loosening the clamps of the radiator outlet and inlet hoses;
dismantling the device.

The next stage is a comparative analysis of Granta SOD and VAZ 2110. On the first vehicle, the stove is connected in series, and on the second - in parallel. On the Lada Granta, the performance of the heating device does not depend on the pump speed. At the same time, the antifreeze in the expansion tank and radiator does not warm up.

The thermostat replacement process is carried out after purchasing the following parts:

gaskets;
lower pipe;
washers;
clamps;
antifreeze;
ABRO sealant.

The thermostat is installed on the VAZ 2110 after draining the antifreeze. To plug the hose coming from the throttle valve, use an M10 bolt and clamps. The next stage is connecting the hoses and installing the temperature sensor.

Tuned SOD system on a VAZ 2110: the stove inlet is connected to the thermostat, and the drain is connected to the saxophone. The damper heating is not activated. If necessary, connect a hose from the stove radiator to the throttle, which goes to the expander. Then pour antifreeze into the SOD and start the engine. During the warming up process, it is recommended to monitor the temperature of the antifreeze and the tightness of the connections. If there are no violations, then the tuning was successful.

Experts include the following advantages of such a replacement:

warmth in the cabin;
stable temperature under different operating modes.

The “new stove” will start blowing warm air at 55°C, and at 70°C hot air will come out of the stove (at idle and while the vehicle is moving). When driving, the engine temperature level will be within 85°C. At the same time, the power unit does not overheat in traffic jams, and the temperature is within 100°C. This helps the fan start.

Additional tuning

To make the thermostat work better, the bypass will need to be modified. A thermostat with 6 holes ensures quick heating of the air in the cabin (due to the reduction of the channel). The volume of liquid that circulates through the valve depends on the diameter of the bypass. As the channel decreases, the flow through the heating device increases. The interior of the “tens” becomes warmer.

When narrowing a thermostat with 5 holes, problems may arise with flushing the thermal element. To narrow the channel to the desired diameter, an aluminum plate is required. It is mounted inside the bypass. To do this, use rivets or cold welding. A new hole is drilled in the plate.

The tuned thermostat consists of a housing with an additional sixth hole (for the pipe), the pipe itself, threads, throttle washer, vehicle head, thermoelement and adjusting bolt. The pipe is screwed in and cold welded.

An additional pipe is installed parallel to the standard one on the stove (to allow the return flow from the heating unit to enter the measuring cavity of the vehicle). To increase the coolant current on a small circle, you will need a throttle washer. This eliminates pressure drop.

The adjusting bolt should rest against the leg of the element. This will allow you to regulate the opening temperature of the vehicle from the outside. Since the standard TS-82s are cold, additional modernization will be required. Experts advise converting carburetor TS-82s into injection ones. To do this, you need to drill and tap a thread for the DTOZH.

A tee is used for tuning. On the “ten” it does not need to be deployed. A thermostat with 6 holes, unlike the previous element, is easier to tune. After reducing this bypass, the coolant temperature will depend on the radiator temperature.

Installing a Thermostat from Grants on a VAZ 2109

Therefore, I liked the idea of installing a thermostat for VAZ 2109 grants and much more. But I've been looking into this issue for a long time because the prospect of a permanently open oven was not entirely accepted and I eventually came to the conclusion that it needed to be done (diagram below).

Of course, this collective farm needs clarification.)) So, the grant organizes a small circle through the stove heater, since in the summer I always had a stove, I decided to disconnect the cable from the mixer heater, because I would not seduce and connect the hose from the expansion cylinder according to the VAZ 2110 scheme (something similar (:). But still a large useful hose from radiator C to the pump groove). I’ll write about anything else that will be useful later, because the repairs are not done, but planned. 1. Thermostat supply (21900-1306010-00) (numbered 29 in the picture) 2. The pipe that removes the grants from the radiator. (6 numbered) 3. Triple thermostat-expansion tank from VAZ 2110 (numbered 30) As I understand from other disk entries, screws will be useful for fixing the thermostat, M8x75 terminal and M8x85 contact.

Why is everyone so afraid to leave the oven open? Is it possible to regulate the temperature using a damper? The new standard heater completely covers the radiator without any problems)

It's just that the stove is not closed, even if the air is closed due to this, it still works like a battery, heating up everything and everyone around you, and in a warm 30 degrees, it is obviously not convenient to keep such a battery in the cabin... ps I know, that many other cars also have a radiator in the cabin and a heater mixer in general, but nevertheless, every 9 ke is provided and I think it is unwise to use it.

By the way, for those interested, I'm expanding valve and bolt control to various interesting levers - take a look at my BR.

Refinement of a budget car

You can install a thermostat from Granta to Priora. To do this, you will need to buy pipes, a gasket, a tee, a temperature sensor, studs, and antifreeze. Since the Granta, unlike the Priora, has a radiator located further from the engine, a long pipe will be required for tuning.

You can splice standard pipes. To do this, use the SOD pump pipe from the “ten”. A straight section with fasteners is cut off from it. Experts attribute the advantages of such tuning to the rapid warming up of the interior and engine; the operating temperature of the internal combustion engine fluctuates within 92°C.

In order to correctly modify the ODS on the VAZ 2110 and Priora, it is recommended to use a book on the operation of these vehicles.

If necessary, it is recommended to consult with auto mechanics.

The maximum coolant temperature of Lada Kalina FL and Lada Granta cars after 1.5-2 years of operation is 78-80 ° C. It is slightly lower than that achieved in previous AvtoVAZ models. Therefore, some drivers consider this temperature regime of engine operation to be “non-optimal”. This, in their opinion, leads to increased fuel consumption and rapid wear of internal combustion engine parts. But plant specialists are not inclined to connect these indicators with each other, since no direct relationship between them has been noticed.

The fact is that the Lada Granta-2190 has a more efficient single-circuit engine cooling system, therefore the coolant temperature is lower while maintaining other characteristics of the car. This modernization made it possible, for example, to increase the ignition timing, and therefore save some fuel. The inertia of the thermostat has also decreased.

However, if you are not satisfied with the climate inside your car in winter, you should try upgrading the standard thermostat.

Adjusting the stroke of the thermoelement

Trimming the heel of the thermoelement rod allows you to increase the temperature of the coolant to 85-90° C. We shorten the rod sequentially, 1 mm at a time. This should be done carefully, as its metal is quite soft. Each time after trimming, you need to install a thermostat in the car and monitor the temperature of the fluid while driving. If it does not satisfy you, the rod is shortened by another 1 mm. And so on until the temperature in the cooling system reaches 90-92° C, and the air in the cabin warms up to the required temperatures.

Replacing the thermostat on a VAZ 2109

To remove and install the thermostat on a VAZ 2109 with a carburetor engine, it is necessary to drain the coolant from the cooling system; the figure below shows how to drain the coolant:

1 — radiator drain plug, 2 — thermostat, 3 — hose to the pump inlet pipe, 4 — hose to the expansion tank, 5 — lower radiator hose (outlet)

Before removing the thermostat from the VAZ 2109, it should be checked - this is done if the engine overheats during operation or slowly warms up to operating temperature. To check the thermostat on a VAZ 2109 car, start the engine and touch the lower radiator hose with your hand. It should be cold. After the coolant temperature reaches 87–92 °C, the hose should begin to heat up. If this does not happen, you need to remove the thermostat and check its functionality.

Thermostat design VAZ 2109: 1 – inlet pipe from the radiator, 2 – rubber insert, 3 – solid heat-sensitive filler, 4 – bypass valve spring, 5 – inlet pipe from the engine, 6 – bypass valve, 7 – outlet pipe to the pump, 8 – main valve spring, 9 – main valve, 10 – pipe from the expansion tank, 11 – piston.

Replacing the thermostat VAZ 2109 with carburetor

Unscrew the bolts securing the crankcase protection and remove it

Unscrew the expansion tank cap

Unscrew the cylinder block drain plug and drain the coolant from the cylinder block

Unscrew the radiator drain plug and drain the coolant from the radiator

Loosen the clamps

Disconnect the three hoses from the thermostat housing

Loosen the clamp and remove the VAZ 2109 thermostat with the hose. Then disconnect the short hose from the thermostat

Lower the thermostat into water heated to 78–80 °C. Heat the water, stirring it constantly, to (87±2) °C

At a temperature of (87±2) °C, the main thermostat valve should begin to open. If this does not happen, replace the thermostat. Install the thermostat on a VAZ 2109 in the reverse order of removal. After installation, fill in coolant. This completes checking and replacing the thermostat.

Changing the thermal insert

You can replace the entire thermal insert. Wahler inserts are ideal for the standard Grant thermostat: 3017.87 D (at 87° C) and 3091.92 B (at 90° C). The insert changes along with the spring. This modernization is carried out using thermostats manufactured by BEHR (which is equipped with the new BAZ-2190 car). There is no need to make any modifications or fit new parts. The BEHR thermostat is dismountable, and the Wahler “thermos” will have to be cut with a hacksaw in order to remove the thermocouple.

Alternatively, you can use a Daewoo Nexia, Renault Logan or Vernet 4898.92 part as a “donor”, but the diameter of the latter’s thermoelement is slightly larger than necessary and requires adjustment. For Luzar models such a replacement is not possible.

Some car enthusiasts who have made this modification claim that fuel consumption, although slightly, has decreased.

Throttle valve heating

Another modification of the “thermos” on the VAZ-2190 is the installation of a heating circuit for the throttle assembly. This is how some car enthusiasts insure themselves against freezing of the throttle valve. To do this, an additional threaded hole is made in the cover of the part, where a fitting is welded through a copper washer to drain the heated liquid. The studs for attaching the “thermos” will also have to be enlarged.

In the end, I would like to note that the engine temperature also depends on the brand of antifreeze used and the viscosity-temperature properties of the oil. Low temperatures in the cabin may be caused by problems in various vehicle systems.