The Chevrolet Cobalt model has become very common and popular among motorists. This is explained by performance characteristics cars are at a high level. The car is hardy, and therefore it has almost no problems with repairs. If you really need reliable car, then you should pay your attention to Cobalt. One of the features of this transport is that it has a chain installed in the timing.
Features of the power unit on the Chevrolet Cobalt
Chevrolet Cobalt with chain timing and HBO.
Two types of power units can be installed on a car. Their main difference from the engines of other brands of Chevrolet is the timing drive. In our country, cars are delivered mainly with a chain, and in Europe you can also see cars with a belt. We also have such cars, but mostly they are brought in from abroad. There are relatively few of them, and therefore this article will focus on the features of machines with a timing chain.
Chevrolet Cobalt installed Gas engine GM Powertrain S-Tec III.
Advantages of the timing chain mechanism
The advantages of the chain drive of the mechanism include the fact that the service life of such motors is long. The manual shows that the chain can last at least 250,000 kilometers.. Due to this, such a unit is cheaper to maintain when compared with a belt drive. It will need to be repaired in 60 000 kilometers of run.
When to pull up?
Also, do not forget that the chain can stretch over time, and therefore you will need to constantly monitor its condition. This will make it possible to avoid problems and save on repairs.
It is important to remember that the chain must be tightened every 70–80 kilometers of run.
When to change the chain?
It is subject to replacement in the event that the engine noise is increased, a roar appears in the area engine compartment when the power unit is gaining speed. If the chain is not tensioned in time, then it will have to be completely changed later..
With increased noise, the timing chain should be replaced.
Timing chain selection
Before carrying out work on replacing the chain, it is worth choosing it correctly. It's easy to do. Since the engine does not have many modifications, there is no need to carefully select such a part. In the market or in the store, you can only choose one chain for Cobalt.
However, some rules should be followed when buying. Among them are:
- Buy only from reputable sellers.
- Do not purchase chains from an unknown manufacturer.
These rules are basic, and therefore they should be followed so as not to create additional problems for yourself. Also, repair kits should be purchased only original ones. They may also be contractual.
When replacing the chain, it is worth changing all the sprockets. These parts are also subject to wear and tear. In order for the parts to fit well, they must be purchased as a set.
When replacing the timing chain, the sprockets must also be changed.
Replacing the timing chain on a Chevrolet Cobalt
You can change the chain on your own, without contacting the service station. Before work, the car must be properly prepared. His be sure to put on the handbrake and remove the battery. You also need to dismantle the air filter and the cover on the head.
Chevrolet Cobalt has an engine displacement of only 1.5 liters. Motor power Chevrolet Cobalt 105 HP Other options for power units on budget sedan Cobalt is not offered in Russia. 
The main feature of this Chevrolet Cobalt engine is the presence timing chains. A timing chain is much more practical than a belt, plus it requires less maintenance. The S-Tec series engine is specifically designed for emerging markets with harsh operating conditions. A photo of the engine is just above. Petrol 16-valve GM Powertrain S-Tec III is combined with both a manual 5-speed gearbox and a 6-band modern automatic, which we will discuss below. For now, detailed engine characteristics Chevrolet Cobalt.
Engine characteristics Chevrolet Cobalt 1.5 B15D2
- Working volume - 1485 cm3
- Number of valves/cylinders - 16/4
- Timing drive - chain
- Ecological class - EURO 5
- Valve timing - DOHC
- Power system - distributed fuel injection
- Power - 105 hp / 78 kW. at 5800 rpm
- Torque - 134 Nm at 4000 rpm
- Maximum speed - 170 (manual transmission5) and 163 (automatic transmission6) kilometers per hour
- Acceleration to the first hundred - 11.7 (manual transmission5) and 14.1 (automatic transmission6) seconds
- Fuel consumption in the urban cycle - 8.4 (manual transmission5) and 10.4 (automatic transmission6) liters
- Fuel consumption on the highway - 5.3 (manual transmission5) and 5.9 (automatic transmission6) liters
- Fuel consumption in the combined cycle - 6.5 (manual transmission5) and 7.6 (automatic transmission6) liters
As far as transmission is concerned, main feature budget Chevrolet Cobalt is the presence of a 6-speed automatic. Chevrolet automatic transmission Cobalt, this unit is assembled in Korea GM 6T30. Photo box automatic Chevrolet Cobalt below.
Fuel consumption with automatic in the city at the Chevrolet Cobalt, even with a very modern automatic transmission, it exceeds 10 liters. For that, on the highway, the sedan boasts a very moderate consumption, a little less than 6 liters.
Concerning dispersal Chevrolet Cobalt with a gun, then up to a hundred the car accelerates in more than 14 seconds. Naturally power unit with a mechanical, albeit 5-speed transmission is more dynamic.
Today, the difference in the price of a Chevrolet Cobalt with an automatic and manual is 59 thousand rubles. Moreover, the cheapest Cobalt configuration does not have air conditioning, but the same version, but with automatic transmission, already has air conditioning. Another incentive to buy a car with an automatic transmission.
Two class B cars on the same platform are a rarity. In one of the previous issues (ЗР, 2013, No. 11) we wrote about Aveo service. Now let's see if the cheap co-platform Cobalt turns out to be even more maintainable.
INDIVIDUAL
Only one engine is available for the Russian Cobalt. In our market, this engine cannot be found under the hood of other Chevrolets. Unlike most of its counterparts in the GM concern, it has a timing drive with a maintenance-free chain - you don’t have to spend a decent amount on a routine replacement of a belt with rollers.
Drive unit attachments depends on the set. Cars without air conditioning are available for order, but so far none of these have been seen in the service. In the rest, the main belt is equipped with an automatic tensioner. To replace it, you will first have to remove the additional power steering pump drive belt, which does not have a tensioner. It is necessary to use a special puller or partially unscrew the pump. The solution is not the best, because the replacement of the main belt is provided every 90,000 km or ten years.
The ignition coils are hidden under a plastic cover, in which the oil separator of the crankcase ventilation system is built. It is fixed with five bolts. The ventilation hose can not be removed. But if you want to completely remove the pad, then you need to press the rectangular latch on its lock. Removing the coils is not difficult, they are fixed with ordinary bolts. The regulation prescribes to change candles every 30,000 km or two years.
Lid air filter rests on two self-tapping screws under the "torx 25" and three protrusions that fit into the slots on the body. You just need to take it out and take it a little to the side. The replacement interval is 30,000 km.
There is no plastic around the battery - there is nothing to break. Its metal holder is fixed with just one bolt. Terminals in standard design.
Replacement fuel filter not covered by the regulation. But, given our realities, someday it will need to be cleaned or replaced. The filter is built into the fuel pump and unfortunately not available as a separate spare part. To remove the assembly, you have to remove the tank. Indeed, as on the Aveo, there is no technological hole in the back.
WET WORK
For the engine drain plug, you need a regular “15” key. There is a hole in the factory crankcase protection for it. Oil filter located on the front of the engine. Access is not very good. Most often, a puller is needed, hand strength may not be enough. It's easier to do it from below, but you can try from above. This choice is useful when only the filter needs to be changed.
Finally, the updated mechanical box has normal drain and filler plugs, albeit under a square head. On the same Aveo, they still put a unit in which you need to unscrew the pan to drain the oil. Formally, it is flooded for the entire service life, but someday it will be necessary to carry out work involving its discharge.
The hydromechanical "automatic" migrated from the "Aveo". To access the drain plug, the protection will have to be removed. The filler hole is on the top of the unit, under a large plastic cap, and the control one is on the side. The required oil level on a heated box is under the edge of the hole. These days, the solution is not the most intricate. The replacement interval is 75,000 km in severe operating conditions and 150,000 km in normal.
The power steering system has a convenient place to drain the fluid. Formally, the oil is filled for the entire service life, but, as practice shows, it requires periodic replacement. His condition is clearly seen in expansion tank. If the oil is very blackened, do not delay the replacement.
The antifreeze drain plug is located on the right side of the radiator. Under its fitting in the "TV" there is a through hole. True, the antifreeze will still spread in all directions, so for ease of draining, put a hose on the fitting. For this operation, you do not need to remove additional elements - very convenient. The replacement interval is 150,000 km or five years.
Replacement brake fluid- every two years. Fittings on brake mechanisms located conveniently. When replacing the front pads, you will need a “7” hexagon for the guides on which the caliper is attached. The design of the rear drum brakes is conventional. A viewing window is provided so that pad wear can be assessed without removing the drum. But the beam prevents them from using it. Apparently, the engineers were in a hurry when they "acquainted" the nodes with each other.
LIGHT UP
I am glad that you do not need to remove the headlights to replace the lamps. After all, then the bumper would also have to be dismantled. Access is the same and acceptable from both sides. Dimensions and running lights combined in one lamp. You do not need to remove the tricky connector with a lock, just turn the cartridge counterclockwise. It's the same with the turn signal light.
The dipped beam lamp is fixed with the usual spring bracket. When replacing, you need to remove two rubber covers: on the well under the lamp and on its connector. The first one is hard to put back on. In addition to the well, it sits tightly on the lamp base and has three small holes for contacts - it is difficult to combine the first time. The cover on the connector can be moved to the side, but this does not help much: visibility is very limited due to the main cover. Access to lamps in PTF only from below. It is necessary to partially unscrew the liner and bend it.
To replace the number plate lamp, you need to remove its housing. To do this, press the screwdriver on the tab on the right. Remove the bulb holder by turning counterclockwise.
Headlights will have to be removed to replace bulbs. They are fixed on two self-tapping screws and two guides that go into the caps of the body. It doesn't take much effort to remove.
TOTAL
Chevrolet-Cobalt scored 13.8 points (they correspond to the total number of standard hours spent on the above operations). In general, in terms of maintenance, it really turned out to be easier and cheaper than Aveo. No special skills are required from the owner. Glad the engineers got it right drain plug on the mechanical box. The only pity is that they did not have enough enthusiasm to cut a window in the body under the fuel pump.
Thank you for your help in preparing the material dealership Trinity Motors Belaya Dacha.
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asks: Yuri Ustinov.
Question: So is it a chain or timing belt?
I want to buy a Chevrolet Cobalt. But there aren't many for sale in our city. I called one seller, he says that he changed the timing belt. To another, he says that there is a chain on Cobalt and it only needs to be tightened. He did not pull up, since the mileage is not more than 45,000. He says that it is necessary to pull up when there is a clatter or a hundred run!
Where is the truth and where is the lie? Should I buy Cobalt on a timing chain mechanism?
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Alexey "technical specialist"
I'm just sick of cars. I try to study in detail every car that I owned. I like driving at night through the streets of the city. In my cars I try to carry out repairs with my own hands!
About the engine
Timing mechanism on a Chevrolet Cobalt chain.
The engine on the Chevrolet Cobalt is distinguished by endurance and excellent technical characteristics.
As a result, the motor is quite inexpensive to repair. It is also a feature that in the timing it has a chain, not a belt .
Advantages of the chain mechanism
Since the chain is more reliable, it can serve for a longer period than the belt.
Chain replacement kit.
It will have to be changed after 250,000 kilometers.
However, it should be remembered that you have to tighten it periodically. . It is recommended to do this every 70-80 thousand kilometers run.
Disadvantages (increased noise)
Chain replacement features
New chain up close.
Replacement is made only complete with rollers. If the chain is tensioned in time, it will last for a long time.
It will also not be difficult to choose it, since there are few engine modifications in Cobalt, which are intended for operation in domestic conditions. For the purchase of the chain is worth a visit only specialized shops. You need to buy only from time-tested sellers in order to save yourself from unnecessary hassle and costs.
At first glance, it seems that Chevrolet Cobalt is ideal for all big family. And indeed it is, but it is important to know the sores of each car before buying, because an attractive design and spaciousness inside is not an indicator of a decent car. Unfortunately, the Chevrolet Cobalt also has illnesses and weaknesses.
Specifications
- Sedan;
- Modification: 2.0 Turbo Ecotec;
- Engine capacity - 1.9 liters, power - 260 hp;
- Front-wheel drive;
- Gearbox: mechanical 5-speed and automatic 4-speed;
- Volume fuel tank- 47 l;
- Fuel consumption: in the city - 10.7 liters, on the highway - 7.8 liters per 100 km.
Advantages and benefits of Chevrolet Cobalt since 2011
- Harmonious image of a city car;
- Salon is spacious;
- Adjustment of the driver's seat;
- Comfortable grip on the steering wheel;
- The rear row seats can be folded, which allows you to carry long loads;
- Great ground clearance;
- Excellent glass washer;
- Informative mirrors;
- Full size spare tire.
Weaknesses of the Chevrolet Cobalt since 2011
- Assembly;
- automatic transmission;
- suspension arms;
- Valve cover gasket;
- Valve train chain;
Now more…
The assembly of the car is a clear defect. In the place where the spare wheel is stored, you can see water. The reason is poor-quality smeared slots behind the rear bumper. Sealant will help fix the problem. The tool must be processed all the seams.
Headlights are another sore sedan. Over time, they begin to sweat. Solving this problem is extremely difficult. As practice shows, all the methods that drivers try are not effective.
The disadvantage of automatic transmission is the poor tolerance of slips. If you regularly arrange races on this car, then the node will quickly fail. A sharp start at a traffic light will also negatively affect his work. A soft ride and a caring attitude will help to avoid this. Many drivers recommend warming up the transmission. Especially in the cold season.
Automatic transmission solenoids.
This problem can also be found on many Chevrolet Cobalt cars. Signs of damage to the solenoid (solenoid valve) are that the car does not move in any gear and when the gear lever is shifted, there is no characteristic push to engage the gear. Most likely, with faulty automatic transmission solenoids, it will not be possible to sell the car, but in the future you need to know about it.
Suspension arms.
The suspension arms, unfortunately, are really problematic in Cobalt. And in this case, you're not going anywhere. This happens mainly with sharp impacts, in the event of a collision at high speed with various obstacles in the form of tubercles or pits. But during a test run before buying, this malfunction is hard to miss. The car becomes difficult to drive, and on the spot it is necessary to pay attention to tire wear. If the inner edge is worn, respectively, this gives an indirect indication that the lever is damaged.
Valve cover gasket.
Of course, we can say that this is, in principle, a trifle and practically does not affect the oil level in the engine, but constant oil leaks from under the valve cover also affect the violation of heat transfer and the possible process of arbitrary ignition and the service life of some electrical elements. Therefore, when buying, you need to ask if the gasket was replaced with a non-original one and make sure that there are no oil leaks from under the covers.
Taking into account the fact that Chevrolet Cobalt is no longer produced and is not supplied to domestic markets, the mileage of many cars is already over 100 thousand km. And accordingly, when buying, you need to pay attention to the condition of the timing chain. If the chain has not been changed by the previous owner, then the replacement will cost about 20 thousand rubles. Generally on this vehicle the timing chain cannot be considered a weak point, but you should definitely pay attention to it when buying.
Racks and bushings of the stabilizer bar.
It can be immediately noted that these elements are not critical malfunctions in the event of their failure. Also, replacing them is not such an expensive operation, and besides, the stabilizer struts and bushings are consumables. To weak points these elements can be attributed due to their rapid wear. Therefore, when buying, you need to pay attention to the condition of the racks and bushings. It can be determined indirectly, both when driving along the characteristic knocks of the suspension, and on the spot when the car is rocking to the sides.
Disadvantages of the second generation Chevrolet Cobalt
- Increased fuel consumption;
- "Crickets" in the cabin;
- Frequent fogging of headlights;
- Poor processing of seams at the junction of the trunk and rear bumper(water ingress);
- Weak engine;
- Rigid suspension;
- Poor-quality plastic in the cabin;
- The cost of maintenance.
Outcome
In conclusion, it can be said and recalled that frequent breakdowns and there are flaws in every car. The main thing is that these problems do not result in a huge waste of money to eliminate them. Accordingly, before buying, you need to weigh the pros and cons, and when buying a car, it is best to give it to professionals in this matter for diagnosis and inspection.
Weaknesses, advantages and disadvantages of the Chevrolet Cobalt was last modified: December 10th, 2018 by Administrator