Replacing the thermostat on a Niva Chevrolet video

Thermostat is a device in the engine cooling system that automatically regulates the temperature of the coolant. The device maintains optimal thermal operating conditions of the engine; with its help, the engine warms up faster.

Structurally, it is a valve, inside of which there is a heat-sensitive element that blocks the flow of water, antifreeze, antifreeze through the radiator until the engine is completely warmed up.

Installation location: in Chevrolet Niva it is located on the left front edge of the engine, connecting the lower pipe of the stove, pipes from the radiator, engine and throttle valve.

Manufacturers and types

Standard sizes of thermostats, which by their design are suitable for installation in the engine of a Chevrolet Niva car, are produced by a number of global companies. The table below presents a list of products.

There is an opinion among car owners that the highest quality, reliable and durable thermostats are products produced by Russian factories. There are currently three such enterprises:

1. City of Stavrovo, Vladimir region, ATO plant;
2. City of Rzhev, Tver region, PRAMO plant;
3. City of Vladimir, Thomson LLC.

Among foreign models, car owners have good reviews of the Metal Inkar model from the Polish manufacturer.

These products work great in the Chevrolet Niva cooling system, the engine warms up quickly, there are no complaints.

The only negative is that the body is made in two versions - plastic and brass. The second option is not very popular among drivers, although it also works well in a circuit.

Zommer, Luzar, WEEL thermostats should only be selected from approved manufacturers. There are a lot of fakes on the market and on the Internet. Retailers seek to sell their dubious products under the guise of original ones to newcomers in the automotive business. To avoid getting burned, when purchasing, you must require licenses, certificates and supporting documents from sellers.

More information about the thermostat on a Chevrolet Niva

To ensure that the engine temperature is optimal, a thermostat is included in the system design. It is installed in the path of coolant movement. There are two types of thermostats, and on the Niva Chevrolet it is of the liquid type.

New thermostat installed.

The body is made of a brass cylinder, inside there is a rod and a double valve, and until the liquid reaches operating temperatures, it circulates in a “small circle”. But as soon as the temperature reaches a limit of 90 degrees, the rod unclenches, opening the way for movement in a “big circle”.

Reasons for replacing the thermostat

Most often, the reason to replace the thermostat is its failure.

It is very easy to diagnose it; to do this, on a warm engine, touch the upper pipe going to the cooling radiator and if it is cold, this will mean that the thermostat is not working properly, because it does not send coolant to a large circle.

Replacing the thermostat is very easy, you just need to minimize the amount of coolant in the system and unscrew all the fixing pipes. But it’s quite difficult to approach the choice of a truly high-quality thermostat, because the choice is very large and among them there are obvious outsiders and leaders.

TOP 5 thermostat manufacturers

Below we will present to you the five best thermostats that have proven themselves not only among real car owners, but also among experts.

1. Thermostat "PRAMO" 2123-1306010-02.
2. Thermostat "Luzar".

   

3. Thermostat "WEEN".

   

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4. Kraft thermostat.

   

5. Thermostat "AvtoVAZ" 2123-21230-1306010-82.

   

Please note that the design of these elements is completely identical, only the workmanship and appearance differ. But it is from this list that all the devices are similar, they have almost the same price of 400–450 rubles.

Articles and prices

To make it easier for you to decide which one is best to install on your car, the table below shows the article numbers and prices for the previously discussed models.

Reviews from Chevy Niva owners

Alexey Bondarenko, Kazan

For a year now I have been driving with a WEEN thermostat, article number 181-0034. The device turns on at a temperature of 87°C. My first thermostat was also a WEEL brand. I traveled with him for less than a year. He stopped maintaining his temperature. I've had my current device for one year and a summer. There were never any problems. The temperature always stays between 85-92 degrees.

Maxim Kalashnik, Pskov

I have been operating a VAZ Chevrolet Niva for more than 10 years with a Thomson thermostat. I have no complaints about the thermostat. Its peculiarity is that thermal inserts work for about 2 years in normal mode. Then they begin to underestimate their indicator. The standard temperature for them is 81°C. In the summer they work fine, that is, 87°C, and in the winter it feels a little cool at 81°C.

Sergey Poltorak, Bologoe

Finnord installed it on the previous Shniva, it worked 100%, last year it started to freeze on the new Shevik, but I couldn’t find Finnord, I installed Luzar - not cold but not so hot either...

Other additions from this review

In order for the thermostat to become like its original one and not cling with the lower pipe to the generator bar and there are no bends, we need to lengthen the pipe from the pump body to the thermostat. I bought a set of new pipes. The standard pipe is on top, its length is about 5 cm, at the bottom there is a piece of 9 cm that I cut off from the old pipe.

On the standard one, one part is larger for the pump body, on the one I cut off less so that it fits, heated it with a hairdryer and put it on. The plug, thermostat and extended pipe are in place. The lower pipe to the radiator stands exactly, does not touch anything anywhere and has no bends.

I screwed a long pipe with a side of 20mm to the thermostat, it rests against the receiver spacer, I wrapped a little electrical tape just in case, so as not to fray. I connected the 16mmmm pipe from the figure eight and the classic one through an adapter.

Each one cut a little in place so that the pipe from the figure eight would not rest on the fuse block and wires.

Comments

General view of what happened. The pipe from the figure eight does not touch or catch anything anywhere.

There is more than a cm to the intake pipe. And also a drop of epoxy, pliers, duckbills, a drill, a set of drills and taps M5 and M8x1, Bolts M5, M8, nuts M5, M8 made of stainless steel, a galvanized washer from roofing iron screws. Below is a conversion of a Metal-Incar thermostat. To begin, drill a 4 mm coaxial hole in the center of the M8x12 bolt and use a tap to cut the M5 thread.

We drill and cut carefully, with lubricant - stainless steel is very malleable, the tools are easy to break. The hole is drilled and threaded.

Original thermoelement rod stop. We need to change it: Using long duckbills, we move the thermoelement rod to the side: On the thermostat cover we mark the center, core and drill a 6.5 mm hole and cut an M8 thread.

We drill a 5 mm hole in the original rod stop: The holes are drilled, the thread is cut: We return the thermoelement rod to its place: We drill the end of the M5 cm bolt.

New rod stop assembly: Screw it into the thermostat cover and check the alignment with the rod.

Draining antifreeze and replacing the Chevrolet Niva thermostat Niva Chevrolet

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Reasons for failure

There are two main thermostat failures:

1. The car does not warm up normally and quickly;
2. The engine overheats quickly.

The malfunction can be identified by a characteristic sign - the needle of the instrument indicating the engine temperature drops sharply down when the car accelerates and jumps up if the car slows down.

A sensitive valve is installed inside the thermostat. It can become clogged with dirt, oil, and foreign bodies. Then it gets stuck in the open or closed state.

Replacing the thermal switch

The thermostat is replaced if the engine's thermal conditions are violated. This usually happens after 60 thousand km. The replacement process is not difficult. It is not necessary to completely drain antifreeze or antifreeze from the system.

Important! When the pipes are disconnected, a certain amount of coolant spills out, so you need to buy it first to top it up.

Required materials and tools:

• screwdriver;
• new clamps;
• sealant;
• Coolant for topping up.

1.Loosen the screws on the five clamps, using a screwdriver, tightening the pipes.

2.Pull off the rubber pipes from the thermostat housing.

3.Remove the old thermostat.

4.Install the new device in reverse order. Before installation, lubricate the joint with sealant. Tighten the new clamp screws securely with a screwdriver.

Note! All thermostats used structurally for the Chevrolet Niva are unified and suitable for VAZ classics.

How to remove the thermostat on a Niva Chevrolet for replacement

After removal, we saw that the valve in the thermostat was stuck.

Before removing the thermostat on a Chevrolet Niva, you need to let the engine cool down if it has been warmed up. After this, there are two options for the development of events: remove the thermostat with partial draining of the antifreeze, or without draining it at all. The fundamental difference is that with partial draining, we in any case lose some of the liquid.

Without draining coolant

To avoid draining the liquid, you can do this:

1. We take two identical open-end wrenches, two screws 30-40 mm long and two corresponding nuts.
2. Clamp the antifreeze supply hose with two wrenches.
3. We fix them with a threaded pair.
4. We pinch the hose.

Not a drop of antifreeze will spill, except what is in the thermostat itself. However, before starting this operation, you should make sure that the hoses are in good condition, without cracks and have not lost their elasticity .

With drain

If you don’t want to experiment, then drain all the antifreeze that is located above the thermostat. To do this, we use the drain plug in the cylinder block. At the same time, you must continue to ensure that antifreeze does not get on the generator. He doesn't like it. After the antifreeze has been drained or the hose is pinched, you can begin dismantling the thermostat.

The algorithm of actions is as follows:

Using a Phillips screwdriver, loosen the clamps and unscrew the clamping screws. This must be done first on the inlet hose, then on the outlet hose.

Traces of spilled antifreeze are visible.

Installing the thermostat is carried out in reverse order.

Thermostat disassembled. Apparently it is not repairable.

Now all that remains is to check at home to understand whether to change the thermostat or try to deal with the old one. It is non-separable , therefore, if the test shows that the valve does not work as it should, it is scrapped. But the new thermostat is still worth checking . Anything can happen.