Why the moped does not gain momentum avtopraim.ru

Other reasons why the moped stopped moving:

The air filter is clogged, if you have driven more than 2000 km, then cleaning the air filter should help.
Check the valves, if they are underpressed or pinched, so as soon as you start adding gas, the moped will lose speed.
If the moped has lost power after running in. This means that you need to reconfigure the carburetor, because during break-in all parts are ground in, the compression ratio in the engine may increase and the engine will operate differently.
The throttle cable may also stretch; if you realize that there is no click when unscrewing sharply, then you need to tighten the cable or replace it.
If you are riding a moped, you give more gas, the speed starts to rise, the engine howls, but the moped itself does not move. Then on a moped the clutch slips.
Another common problem why a moped starts to stall is overheating.
Another reason why the moped does not pull is that the valves begin to leak or the rings allow oil into the combustion chamber, then the moped will also begin to lose power.
Be sure to pay attention to the condition of the chain and sprockets, if they are worn too much - this gives additional load during rotation, so the loss of power may depend on what is heating the chain.
Also check the brakes to see if they are jammed, place the moped on the center stand and spin the wheel by hand; if it spins smoothly, then the brakes are fine. And keep an eye on your tire pressure. So if your moped has lost power and stopped pulling, then take it and check everything in every detail.

Carburetor settings.

Doesn't start well, revs fluctuate.

15 Sep 2013, 12:05

Good afternoon I am very concerned about the current situation: the alpha moped at first began to have trouble starting. Then it started stalling after you pressed the clutch (after driving at 4-5 thousand rpm). At idle it was possible to accelerate easily. Now it is possible to start only by spinning it with the starter or using the pushrod. Singles float. And, after you give it gas, the revolutions jump to 7 thousand and slowly descend. In 3rd gear it started to stall. If you turn off the moped, you won't be able to start it. At the same time, the NGK 6 candle is normal and light. What's happened.

Re: Poor starting, revs fluctuate.

15 Sep 2013, 18:19

Alpha moped does not gain momentum

What to do if the four-stroke engine of a moped does not gain speed?

Today, more than ever, motorcycle technology has become very common, but this is not surprising because this vehicle is very convenient and economical. Oddly enough, even such a simple type of equipment very often breaks down and the owner does not know how to repair his “two-wheeled horse.” A very common problem is instability in engine operation, which sometimes comes suddenly, and in some cases after intervention in the system by an inept owner. In any case, you can fix the breakdown yourself, without visiting a special workshop, where you would have to pay a tidy sum for repairs, even if the breakdown itself were minor. Unfortunately, repair shop owners often do not miss the opportunity to exaggerate in order to squeeze more revenue out of the motorcycle owner. Therefore, it is better to learn to maintain your vehicle yourself, which will not only save you money, but also give you repair and maintenance skills.

Possible reasons why the moped does not gain momentum and solutions

If you are faced with such a problem and do not know why the moped does not gain momentum, then you should calculate the reason causing this deficiency. In fact, there are many reasons when the engine cannot reach 100% speed, resulting in a severe loss of power, instability in engine operation, poor starting, increased fuel consumption, and other shortcomings that appear as a result of missing engine speed are also possible.

The motor of a moped is an important element that greatly affects the quality of the ride, so you should always pay due attention to this unit, even in the event of minor breakdowns. Timely maintenance and elimination of emerging deficiencies allows you to eliminate future breakdowns, extend the service life of the moped and extend its technical condition. But still, if it would seem that the technical condition is normal, but the moped does not gain momentum, what to do in this case.

First, you need to determine which node is failing. To do this, you need to take a toolbox and first unscrew the spark plug. A very common cause of this problem is a damaged spark plug. After unscrewing, visually it will be quite normal, but it is worth examining it in more detail and checking its performance. The first thing you should pay attention to is the place where the spark occurs, which should be dry and light, black soot and the absence of a gap indicate poor performance of the spark plug. As a rule, the spark plug is replaced immediately.

If, after replacing the spark plug, engine operation returned to normal, but after a while the same problems with the set of revolutions arose again, then it’s worth getting into the carburetor. If the carburetor has already been previously adjusted for some reason, then it is necessary to reconfigure it in accordance with the parameters specified by the manufacturer. When you disassemble the carburetor, it is worth inspecting some of the jets and, if possible, blowing or cleaning the holes through which the fuel passes. If there is debris in the carburetor, it is necessary to completely flush the fuel system, replace the fuel filter and use sealant when reassembling the carburetor.

If the spark plug and fuel system are in excellent condition, but the delta moped does not gain momentum, what should you do under such circumstances? In this case, it is necessary to check the quality and stability of the spark supply. Very often there are cases when a spark arrives, but when the speed increases or the components heat up, its quality deteriorates, then it is necessary to clean the contacts suitable for the power nodes and, if possible, replace the elements responsible for supplying the spark.

A fairly common reason when a moped does not pick up speed under load is the gas distribution mechanism, or rather the valve. The first sign that the gas distribution mechanism is the culprit of the problem is an extraneous sound that comes from the top of the cylinder, where the gas distribution unit itself is located. This system simply cannot fail and, as a rule, repair and restoration of this part is expensive. The main reasons are a breakdown in the air filter, or insufficient air purification, which could cause a breakdown.

Heating of the engine and a very hot knee also indicate problems with the valves. In most cases, it is possible to repair this unit yourself, but most motorcycle owners do not bother, but buy a new filter and, of course, the gas distribution unit itself. Replacement is carried out by removing and installing a new cylinder head, followed by adjusting the valves and adjusting the clearances.

Possible reasons

First of all, you need to look for a breakdown in the scooter’s structure, but you also shouldn’t forget about other reasons, for example, external influences. The main breakdowns will be discussed below.

Belt variator

A variator is a device for increasing the speed of a scooter by using rollers of different diameters. The main element of this mechanism is a belt that transmits torque. It must be of a certain length, width and, most importantly, thickness. A slight wear of the belt by just 1 mm can change the overall radius of the belt loop, which leads to a drop in the maximum speed. It is clear that you cannot measure the thickness of the belt by eye; for this you will need a caliper. If the measurement shows a deviation from the norm by 1 or 1.5 mm, the belt should be replaced

There are several types of scooter breakdowns

CVT rollers

These elements of the gear shifting mechanism wear out over time. They become thinner or lose their correct geometry, for example, only one side of the roller wears off and it stops performing its functions. The repair is simple - replacing the worn out roller. There are two options for rollers - expensive high-quality and cheap. Knowledgeable people recommend buying cheap ones, since both of them are erased after about 3-5 thousand kilometers. Therefore, there is no point in overpaying.

Air filter

A visual inspection of the spark plug helps to understand that the reason is in this particular unit - it is covered with black deposits.

It is also worth paying attention to increased fuel consumption, this also indicates a problem with the air filter. That is, the combustible mixture becomes enriched due to lack of air, hence the deposit on the spark plug and increased gasoline consumption

Several parts in this unit may become unusable - sealing rings on the cylinder, cylinder walls, for example, due to scratches, chips on the piston. Piston problems are easily diagnosed by measuring compression. If it is less than 7 atmospheres, then you need to disassemble the engine. Repair depends on the degree of destruction of the piston, but in any case, it is necessary to replace all gaskets in the block, even if the repair consisted of replacing the O-ring.

The variator belt must be of a certain length

If it is clogged, then the engine power is sharply reduced. Repair consists of replacing the muffler or burning it. It is possible, in principle, to remove it completely, but then the roar of the engine will disturb the peace of the townspeople.

Dirty carburetor

This device is designed to prepare a combustible mixture consisting of gasoline and air, which are mixed in certain proportions. A carburetor is a rather complex device, having a lot of nozzles and jets. This is precisely how they can become clogged during operation with dust or small fractions floating in gasoline. The holes are so small that to clean it you will have to completely disassemble the carburetor and blow them out with a compressor, and the device itself must be thoroughly wiped with gasoline, both inside and out. If you don’t have a compressor at hand, you can try to clean the inside of the carburetor with a special compound, sold in auto stores in the form of aerosol cans.

The scooter does not gain momentum: all possible reasons and instructions for repair

The scooter is a very popular means of transportation. Over time, and maybe immediately after purchase, you may notice that you cannot accelerate the scooter to the speed stated by the manufacturer. Don't get upset and give up right away. The main thing is that you have identified the problem and are committed to solving it.

Let's take a closer look at the most common reasons why a scooter does not pick up speed well and does not provide the characteristics declared by the manufacturer. And we will sequentially analyze each stage of diagnostics and repair.

Diagnostics and repair procedure

The scooter does not develop speed; this is generally a very popular problem among scooter owners, regardless of capacity and manufacturer. Moreover, its manifestation is quite diverse. For some people right away, for others after a run or after warming up. But there is always a reason.

There are many reasons why a scooter does not gain momentum.

So, why doesn’t the scooter gain or develop momentum?

The scooter simply doesn't have enough power. Don't be alarmed, it's just a set of mechanisms that obey the laws of mechanics, which means they can be understood and repaired. And since the scooter is a simple device, you can identify the problem yourself and fix it.

The operation of a scooter is determined by 3 components: fuel, compression and spark. Therefore, if the scooter does not gain momentum, then you must definitely check the condition of these components. And, ruling out the presence of faults sequentially, we will find the cause and eliminate it.

Running in a moped with an updated engine

When the moped is assembled with a new motor configuration and run in gentle modes, try to reach maximum speed in deserted conditions. It may turn out that the chassis and brakes can no longer cope with the power of the engine. The spokes of the rear wheel are curled by torque, and in order to brake the moped you will have to release the brake parachute. While driving, the silent blocks of the shock absorbers fall out and wobbling begins. This means that next on the replacement list will be shock absorbers, a motorcycle front fork with a wheel and a disc brake system.

Many scooter owners, after a few months of riding, think about the question “How to increase the speed of the scooter?” And no wonder!

After all, the notorious 50 “cubes” are often not enough, and it is not possible to quickly raise money for new, more powerful equipment. That is why various tricks are used to increase the power of the moped, as well as its speed from the usual 60 km/h to 80 and above.

Checking and cleaning the air filter

When the air filter is clogged, the air flow into the carburetor is greatly reduced, which leads to an over-enrichment of the mixture with gasoline, as well as increased fuel consumption, loss of power at the bottom, and increased formation of soot in the combustion chamber. This is the most common reason why a started scooter does not gain momentum.

The first thing we check is the air filter if we detect unstable operation of the scooter.

Removing the filter

If we detect unstable operation of the scooter, first of all we check the air filter:

1.Remove the filter, carefully removing along the way all parts that interfere with this process

2. We clean the filter housing from dirt.

3. Dismantle the housing, being careful not to damage it.

4. We check for damage: through holes, cracks, tears, insufficient adherence to the cover or edges of the case.

5. Carefully remove the filter from the lid.

6.If the filter is damaged or its service life has been exceeded, then simply install a new one in its place. There is no point in wasting time trying to restore it; it is not economically feasible.

Cleaning the filter

Ways to clean the scooter air filter:

Washing the filter in gasoline. Gasoline changes occur at least 2 times. Complete drying is not required.
Rinse the scooter's air filter in water using ordinary detergents intended, for example, for washing dishes, and then dry until completely dry. Drying should be natural, without heating.

Installing the filter in place

We saturate the filter with oil

After washing and drying the filter, it must be impregnated with a special impregnation or engine oil. This will save your carburetor and CPG from small dust particles that may remain on the surface of the filter. Without oil impregnation, the functionality of the filter is extremely low, so the ENTIRE surface of the filter must be covered with a thin but visible layer of oil.

If you use a special impregnation, it is enough to cover the entire surface with a thin layer. Even the smallest dust particles stick to this liquid.

Or you can just get by with regular motor oil. But the use of special impregnation is more effective.

Reinstall the filter.

Checking the spark plug

The condition of the spark plug provides a lot of information for understanding the causes of the malfunction and, accordingly, for choosing repair actions.

Acceptable view

The appearance is light, slight precipitation or electrocorrosion is possible.

Carbon deposits on the candle

Recommended actions:

adjustment of the working mixture;
adjust the cold start system of the scooter engine;
replace the air filter;
Cleaning the spark plug or replacing it with a new one. In this case, it is important to select the correct heat number.

Recommended actions:

change the torque of the scooter's spark plug;
debug the scooter engine cooling system;
understand the ignition system;
understand the glow number of the spark plug (a value characterizing the spark plug, proportional to the average pressure at which glow ignition begins to appear during testing of the spark plug on a motor calibration unit).

Carbon deposits on the spark plug may cause the scooter to malfunction.

Oil contamination

Recommended actions:

change the ratio of gasoline and oil in the fuel mixture, replace the spark plugs of the scooter (for two-stroke engines);
Check the condition of the scooter engine; you may have to repair it.

In general, it is believed that if a Chinese scooter does not start well and does not gain momentum, then, unlike European and Japanese scooters, the problem is most often in the ignition system.

Scooter troit

When the enricher enriches the mixture, the scooter may choke. Before you start driving, you need to let the engine run a little and gain more or less stable speed . You can give the gas on the step without putting any load on the engine.

If it seems that the scooter is “troubling”, then this is usually due to the carburetor (or it simply did not have time to warm up). may be too rich . Check the spark plug. If it is black, then you need to lean the mixture. The needle may have failed . Check what condition it is in. Perhaps it has play or there is simply dirt in it. This will disrupt its operation and it will work unevenly, causing the scooter to “trouble.” It may help to simply clean the carburetor . If dirt gets there, it can easily disrupt the proper operation of the carburetor. And this in turn can cause our problem.

Other reasons why the scooter is tripping

Other causes could be a clogged air filter or a bad glow plug. In this case, you need to clean the filter or simply remove it to check the stability of operation without it. It is enough to replace the candle with another one, preferably with a high-quality one (ideally with a native one for your device). If this is the reason, then the scooter will stop tripping. And if it’s not in it, then there definitely won’t be an extra candle. It can be saved as a backup.

Checking compression in the cylinder

If the scooter engine does not pick up speed, but everything is in order with the carburetor, you need to check the cylinder compression.

The compression diagnostic process will help assess the condition of the cylinder-piston group without disassembling it. As a rule, damage to the piston rings occurs with reduced compression. For four-stroke engines, it may also mean that the valves are not tightly seated in the seats.

Compression is measured with a compression gauge, which can easily be replaced with an ordinary pressure gauge with a check valve. The compression gauge is mounted in place of the spark plug in the cylinder. To purchase it, you can visit any auto store, it’s inexpensive.

The condition of the cylinder-piston group will help evaluate the compression diagnostic process

Possible reasons for low compression (less than 6 atm) or its absence:

non-working reed valve - for 2 tons of engines;
leakage through the crankcase, usually through the crankshaft seals - for 2 tons of engines;
severely burnt or insufficiently tight valves - for 4 tons of engines;
damaged cylinder head gasket;
burnout or wear of the piston, cylinder or ring;
microcracks in the cylinder head.

How to clean the muffler

With a metal cable, acting like a brush. Convenient, fast, but not for long.

Heat treatment

With a blowtorch or in an oven or barbecue (but then be sure to remove the muffler from the scooter). The muffler warms up as much as possible. With blows, the soot resulting from calcination is shed off, and it is blown out using a compressor. Effective, but the result will look unaesthetic.

Chemical treatment

Dismantle the muffler. Wash with pipe cleaner or other caustic liquid, such as sodium hydroxide. Rinse with clean water. Dry well. The end result is a very high quality one. But it’s long and difficult.

What to do if the variator belt is worn out

Both longitudinal and transverse cracks require replacement of the variator. Moreover, it is better not to delay it in order to avoid serious consequences.

Muffler cleaning

It is easy to replace the variator belt if you do not delay this procedure before the belt fails. If you tighten until the weights fall apart, you will most likely need to completely replace the entire mechanism. It’s cheaper and easier not to delay.

To change the belt, all you need is a gas wrench. But it will be difficult to completely replace the mechanism without special tools.

BRAKING

There are four types of braking: full - until the scooter stops, working - to slightly reduce the speed, parking - to hold on a slope, and emergency.

If you sharply, strongly press the brake lever, the wheel may lock - it will stop rotating and the wheel will “skid”. Locking the front wheel is dangerous - a fall is almost guaranteed. If the locking occurs at low speed, the rear wheel is likely to lift (the “stoppie” effect) and the scooter may roll over. The “skidding” of the rear wheel when moving in a straight line is not so critical, at least until the wheel begins to move to the side (in such cases they say: the wheel has skidded). If you don’t have time to release the brake in time, you will fall onto the asphalt.

On scooters with a CVT they brake in three ways: only front, only one rear, and simultaneously front and rear. Which one should you start working on earlier and which one should you press harder? It is advisable to brake simultaneously with both or with a slight advance with the rear brake.

Many beginners are prejudiced against using the front brake - they are afraid of turning over or falling. And they are mistaken: when braking, the weight falling on the front and rear wheels is redistributed, but the front one accounts for most of it. Based on this, it follows that the efficiency of one front brake is approximately 30% higher than that of only the rear. To avoid rolling over, avoid pressing the brake lever suddenly. And braking with one rear wheel is justified only on slippery surfaces.

Some people think that the rear brake is not needed at all. And this is a misconception, and a dangerous one at that. When braking with one front brake in a turn and with poor tire adhesion to the road (for example, when there is a little sand on the asphalt), the wheel drifting to the side and subsequent fall is inevitable. Therefore, do not get used to working only with the front one.

Using both brakes at the same time reduces stopping distance by 20%. When braking from a speed of 30 km/h, modern scooters stop after an average of 5–7 m.

Don't forget that you can't slow down the engine on a scooter. This means that on descents you will have to use the brakes constantly. When driving around the city, this feature does not cause any difficulties, but on long, steep descents it’s a different matter. This means that as a result of constant long-term operation, the brakes may overheat.

How to check the spark

Place the spark plug on the metal body of the engine and turn the starter.
We replace the faulty spark plug.
It is possible that the spark plug is working properly, but the spark is not produced. We check the wiring and find a break or faulty element.

Possible reasons for lack of spark:

spark plug contamination or malfunction;
wiring is broken or of poor quality;
a broken or simply high-quality coil in the ignition system;
the induction ignition sensor is broken or “shorted”;
the ignition switch is faulty;
generator is faulty.

Why doesn't the moped gain momentum?

If the scooter, immediately after purchase, easily squeezed out its required 60 kilometers per hour (we are talking about fifty dollars), and over time began to gradually slow down at maximum speed, do not panic. Sometimes it is enough to determine the reason for this behavior of the scooter and return everything to its place within a few minutes.

It should be noted that some Chinese pseudo-fifty dollars, while new, can easily accelerate to 70 km/h or more. Pseudo-, because usually there are not 49.9 cubes at all, but from 62 to 82cc. This is a deliberate step by Chinese engineers. Installing a larger piston does not entail any monetary costs, but it has a noticeable effect on both the dynamics and the maximum speed. Such scooters are not supplied to Europe, since there is strict control over both quality and compliance with all basic environmental and cubic capacity standards.

But in the post-Soviet countries they are in great demand due to their low price, large size and pleasant appearance (not always).

Chinese cubic scooters also have sufficient demand that the reason for the decline in maximum speed affects them too. Sometimes it happens that a Chinese scooter with an engine capacity of 150 cubic centimeters cannot accelerate more than 60-70 km/h. These are unacceptable indicators that definitely need to be understood and corrected, which is what we will do next.

So, the main reasons that entail a decrease in maximum speed, and sometimes dynamics:

1) The variator belt has worn out by more than 1-1.5 mm , after which it cannot reach the maximum radius of the variator, and therefore there can be no talk of maximum speed.

To understand this, take a look at the picture below.

The left cheek denotes the variator itself, the right cheek the clutch. The position of the belt and rollers during all operating ranges of the scooter are indicated on the side.

We are interested in the highest gear, in which the variator belt should be as close as possible to the edge of the cheeks.

If its width is below the permissible standards, it cannot do this, hence the maximum speed drops, sometimes up to 15 km per hour less than the norm (if the belt is heavily worn). Therefore, it is important to periodically check the width of the belt with a caliper, and if it is worn down to 1.5 mm (ideally 1 mm), replace it with a new one. You can find all factory sizes of scooter belts on our website.

2) Wear of the variator rollers on a scooter also entails a decrease in maximum speed. There are two factors here - a reduction in the weight of the roller itself and a change in shape from round to square (triangular, it doesn’t matter), when the roller does not roll out in the ditch, but simply slides in it.

Here are photos of worn-out rollers, which should not be allowed:

NEXT comparison with new videos

To avoid such situations, check the rollers for wear every 3-4 thousand km. Some will say that they should last much longer, but this only applies to high-quality and branded spare parts made from durable material. They cost 5-6 times more than regular Chinese ones, and they cost about the same amount of time. My opinion is that it is better to periodically change cheap rollers for $5 than to buy branded ones for $30. However, for serious tuning, it is still better to pay attention to quality.

3) Piston wear on a scooter is one of the most important factors in which both maximum speed and dynamics are reduced. The engine simply loses power and cannot realize its original performance. At the same time, the compression reading plays a key role in determining piston wear. It can be measured with a regular automobile compression meter at any service station. If these indicators are less than 7 Atm, the piston and rings on the scooter engine must be replaced. In this case, it is better to immediately clean the windows in the cylinder from carbon deposits, as well as the inside of the cylinder head. Remove the old gaskets under the cylinder and head and replace them with new ones. Take the replacement of the CPG seriously, install the rings and the direction of the locks correctly.

It is important to undergo proper break-in and not overheat the scooter engine. When the parts of the cylinder-piston group are not yet ground in well enough, any loads can lead to overheating.

4) A clogged air filter on a scooter significantly reduces engine power as it lacks air. At the same time, the mixture is enriched, there is no overheating. By constantly driving with a rich mixture, the period of soot formation in the engine is reduced. In addition, fuel consumption increases, dynamics and maximum speed decrease. There is a black velvety coating on the spark plug electrodes.

Scooter engine idling

The problem of floating idle is constantly relevant and is often quite difficult to resolve. Traditionally, the solution can be simple, for example, in some cases, it is enough to change the spark plug and the problem is solved, but quite often there are a number of small shortcomings and shortcomings. In this case, there is the influence of a number of reasons, which together have every chance of influencing the proper operation of the motor.

Correct idle operation on a scooter is only possible in the following cases:

The spark plug is in good working order and has the correct gap. Has no soot or fusion.
Even though you changed the rings, you were able to ignore the deposits inside the combustion chamber, in particular, on the cylinder windows, on the cylinder head. Excess carbon deposits in the engine, which could be created as a result of bad oil (if the scooter is two-stroke), will directly affect the proper operation of the engine.
Correct idle operation is impossible in the absence of a working starting concentrator. It plays a major role when starting the engine when cold. And in this case, the speed must float within this range until the engine warms up. At the beginning, immediately after starting, the speed should be higher, and will gradually decrease as the scooter engine warms up. Therefore, it is necessary to adjust the idle speed only when the scooter is warm.
The exhaust pipe and filter must be clean.
The carburetor must be washed and blown out at least every 2 years, especially if you do not use the scooter in winter.

Normal idling is impossible, either in one of the above cases or in combination. Therefore, it is important to carry out periodic maintenance of the scooter in order to be aware of each of the points, and, if necessary, quickly fix the breakdown.

To begin with, I would like to express my gratitude to Alfista Maxim (verafm) for the information provided on how to deal with floating speed.

I think many Alfa Romeo 156 owners have encountered a problem when the engine speed starts to jump when coasting in neutral or while stopping at a traffic light, or after a long trip, for example on the highway, or in some other cases.

I hasten to inform you that there is a solution to this problem, it is available to everyone, it does not break the pocket and will take 15 minutes of your time. Tested on several Alphas.

What you will need for work:

— negative screwdriver, — cable for diagnostics (any cable, as long as it is connected to the engine), — laptop, — FIAT ECU Scan program.

If you don’t have a lanyard for diagnostics, visit your alpha service, I’ll tell you why later. So, let's begin…

1. Warm up the car to operating temperature. We're jamming it. 2. Open the hood and find the throttle with the brain placed on it. 3. We see that there are 2 connectors connected to the brain and us. We are interested in the connector that is located closer to the car interior. 4. Unfasten it from the brains. 5. Next you need to remove the top plastic cover to gain access to the wires. To do this, use a screwdriver to pry up several clamps that hold the cover. and remove it. 6. Next we need to remove the clamp that holds the wires. It is purple in color and is located closer to the connector legs on the side opposite the wire (twist the connector in your hands and you will understand where it is located). We pry it up with a screwdriver and pull it out using normal force. There are no latches holding it in place, you just have to pull it hard. Attention! Use your other hand to hold all the wires to prevent them from accidentally popping out, as this clamp holds all the wires in place. 7. Find a black-green wire. It can be located on leg 26 or 27, depending on the engine and vehicle configuration. It can probably also be located on some other leg, but in any case it is black and green in color. Carefully pulls it out of the connector, isolate it and tuck it into the wire corrugation. The legs are numbered on both the connector and the brain socket. This wiring reads the readings from the speed sensor. The only trouble in this whole matter is that when connected to the FIAT ECU Scan in real time, you will no longer be able to see the car's speed.

8. Reassemble everything in reverse order and connect the connector. 9. Connect the diagnostic cable and go to the FIAT ECU Scan program. Turn on the ignition and connect to the engine. We see that no errors appeared. Next, go to the “Settings” section and select the option to reset self-adapting parameters and idle air control. We begin the procedure, follow the instructions: - start adaptation; — turn off the ignition for 30 seconds; — turn on the ignition for 30 seconds; — start and drive 20 km.

We go somewhere on the highway or an open road and ride in different modes. Already in this race you will feel the difference, the speed will only occasionally jump. Then we leave the car near the house and return to it a day later, start it, warm it up without touching the gas pedal to 70 degrees or higher. We drive another 20 km.

After these steps, the procedure is considered complete. RPM surges will no longer bother you. Enjoy smooth engine operation in all situations.

If it helped you - thumbs up =)

The photo used for this post is not mine.

We also read these instructions:

INSTRUCTIONS