A situation where the car refuses to start, and the starter is silent or only makes a single click, always takes you by surprise. Owners of cars with a manual transmission know the classic method of "pushing", but for owners transmission This path is often closed due to the design features of the hydraulic transformer. However, despair is a bad advisor, and a technically competent approach can save the situation even in the most difficult conditions. In this article, we will discuss the real ways of starting the engine when the regular start system has failed, and assess the risks of each method.
Before starting any action, it is necessary to clearly understand: gearbox It does not have a rigid connection between the wheels and the engine at low revs, which makes classic towing to start useless. The hydraulic pressure in the system has not yet been created, and the rotation of the wheels is not transmitted to the crankshaft. Therefore, most folk methods working on "mechanics" are ineffective here or require specific conditions. It is also important to note that modern vehicles with electronic control unit (ECUs) can block the start in the absence of a signal from an immoblazer or security sensors.
There are several proven ways to resuscitate a car, but their applicability depends on the cause of the breakdown. If the starter is completely burned, but the bendix is intact, or the problem lies in the retractable relay, chances are there. In cases where the engine jammed or turned the liners, any attempts to start will lead to fatal consequences. Direct closure of the power contacts of the starter with a screwdriver is possible only on old cars without complex electronics and immobilizers. Below we will take a closer look at each option so you can make an informed decision.
Analysis of the reasons for the starter's failure
The first step should always be diagnosis, even rapid diagnosis. Understanding what exactly went wrong will determine your next steps. Often drivers sin on the starter, when the problem lies in a discharged battery or oxidized terminals. Check the voltage on the terminals battery with a multimeter. If it is below 10 volts, the starter may simply not get enough current to turn the engine around, even if it is in good working order.
If the battery is charged, and when you turn the key, you hear a click, but there is no rotation, there is likely a problem in the very traction-relay Or the windings of an electric motor. In some cases, the starter can “curl” due to the development of the life of the bushings or getting dirt. It is important to listen: humming without rotation indicates that the bendix does not get involved with the flywheel. In such a situation, attempts to start the engine by external influence can be dangerous for the teeth of the flywheel.
Modern security systems also play a role. If the vehicle is equipped with a complex system immobilizerIt may not give the starter a command, even if you directly apply voltage to it. In this case, the indicator on the dashboard may flash or burn red. Ignoring this fact will lead to a waste of time. Always check if the car recognizes the key.
Do not forget about the temperature factor. In severe frosts, the oil in the engine thickens, creating a huge resistance. The starter is physically difficult to turn the crankshaft, and he can go into defense or simply not develop the necessary turns. In such cases, preliminary battery-warming or using a booster may be more effective than trying to “revive” a faulty node.
Towing method: myths and reality for automatic transmission
The most common question is: can I start the machine from the pusher? The short answer is: noIn terms of the classical method. Unlike mechanics, where when the gear is turned on, the rotation of the wheels is transmitted directly to the crankshaft, in the automatic communication is carried out through a hydraulic transformer and an ATF fluid. At low revs (when towing) the pressure of the oil is not enough to transfer torque. You will simply tow a car with locked gears or neutral, but the engine will not start.
However, there is a nuance for some older models with three-speed automatics or transmission modifications. Theoretically, if you accelerate the car to high speed (60-70 km / h) and sharply turn on the transmission D or LThere is little chance of creating a pressure surge. But risk Here are colossal: you can easily damage the frictions, break the shafts or set a fire in the box due to overheating. Modern machines will not survive such an operation.
⚠️ Attention: Attempting to start a car with automatic transmission by towing at high speed with the inclusion of transmission in 99% of cases will lead to expensive repairs of the transmission. Do not risk a unit worth several hundred thousand rubles for the sake of saving on the tow truck.
There is an alternative method that sometimes works on front-wheel drive cars with a specific type of transmission, where the pump of the box is driven from the input shaft. But even then, speeds are required that are unattainable with manual push. So if you find yourself alone in the field, the towing method for the owner machine-gun It should be immediately dismissed as unworkable and dangerous.
The only safe use case for towing is to deliver the car to the repair site or use another car to charge the battery through wires ("lighting") if the problem was in the discharged battery and not in the starter. In the latter case, the engine will start normally, as the starter will receive energy from the donor.
Direct start of the starter bypassing the ignition lock
If the problem lies not in the mechanical part of the starter, but in the control circuit (ignition lock, wiring, relay is faulty), you can try to apply the voltage directly. This method is suitable for cars where the starter is serviceable but does not receive a command to start. You will need access to the starter itself, which is usually located at the bottom of the engine, often under the exhaust manifold.
To implement this method, a thick wire with a cross section of at least 4-6 mm2 must be used. One end of the wire is connected to the plus terminal battery or directly to the power bolt on the starter (where comes a thick wire from the battery). The second end should be briefly touched by the control contact (thin wire or terminal on the retracting relay). This will close the chain and make the starter spin.
Safety Techniques for Electrical Work
With direct closure of contacts, sparking is possible. Make sure there is no gasoline around. Do not hold the wire with your hands at the point of contact - you can get a burn or electric shock. Use an isolated tool.
If the starter wedges or burned, the closure of the contacts will not give anything, except a powerful spark and a possible fire of the wiring. Also, many modern cars have protection that will not allow the engine to start without a signal from the ECU, even if the starter will spin.
- 🔋 Make sure the battery is charged and the terminals are tightened.
- 🔧 Find the starter and determine the power and control contacts.
- 🧤 Use an insulated wire with a cross section of 4 mm2.
- 🚫 Do not hold the wire with your bare hands during the circuit.
Use of the launcher (Buster)
Often drivers confuse the starter malfunction with the banal discharge of the battery. If the starter is sluggish or crackling, it may just be lacking in current. In this case, the ideal solution would be to use launcher (booster) It is a compact lithium-polymer battery capable of delivering a huge initiation current within seconds.
The booster is connected directly to the battery terminals (or through special connectors, if they are in the car). After connecting, you need to wait a few minutes to the surface charge slightly “revive” the main battery, and then try to start the car in a normal way. This method is safe for electronics motor-car It doesn't require physical effort.
When buying a booster, pay attention to the starting current (Cranking Amps). For a 2.0-liter engine and above, look for devices with currents from 400A and above. Cheap models may not be able to handle cold start.
The advantage of this method is its universality. The booster will help start the engine, even if the starter is a little “whipped” due to the thick oil, as it will give a peak current that is not available to a normal battery. This is the most civilized and safe way to solve the problem “does not start” in the field.
Repair of the retracting relay in place
Sometimes the starter doesn’t work because of the burnout of the contacts inside. retractable. This is a common problem that can be tried to fix without removing the starter if there is access to the relay. The essence of the method is to clean the contacts or close them forcibly. However, this method requires accuracy and understanding of the device of the node.
On some models of starters, you can remove the rear cover of the relay (if it is removable) and clean the copper patches from the soot. In other cases, drivers use the “shock therapy” method – a few precise hammer strikes on the relay body can temporarily restore contact by displacing the stuck elements. This is a temporary measure to get to the service.
| Symptoms. | Probable cause | Action. |
|---|---|---|
| One click, silence. | Retractor relay or discharge of AKB | Check the charge, clean the terminals. |
| Cracking, no spinning. | Lack of current or wear of bushings | Try a booster or kick on a starter |
| Hood, no hooking. | Bendix malfunctioned. | Starter removal and repair required |
| Sparking at launch | Bad contact or CZ | Stop trying, check the wiring immediately. |
If after cleaning contacts or blows the starter has come to life, do not be deceived. The resources of his work in this state are unpredictable. Retractor relay With burnt contacts, it will warm up and may fail again at the most inopportune moment, for example, in the middle of an intersection. Immediately after successful launch, go to the service.
☑️ Actions in case of starter failure
When a tow truck is required
There are situations where any attempts to launch yourself are not only useless, but also harmful. If the starter makes a strong grinding, burning smell or smoke, stop trying immediately. Continued rotation can lead to destruction bendix, damage to the flywheel teeth and even jamming the engine. In such cases, the only reasonable way out is to evacuate.
Also, a tow truck is necessary if the problem is not in the starter, but in the engine itself (hydro-impact, break of the belt of the timing liner, jamming of the liners). Attempts to turn the crankshaft with an external force with a jammed engine will lead to its complete destruction. Auditory diagnosis and visual examination often help to understand the scale of the disaster.
⚠️ Attention: If you feel resistance when you try to launch that suddenly disappears with a characteristic metal clang, it may have turned the liners or turned the shaft. Further launch is strictly prohibited!
The cost of a tow truck is often lower than the cost of repairing an engine or gearbox after unsuccessful experiments. Don’t be a hero if you’re not 100% sure of the cause of the breakdown. Professional diagnosis on SRT will save you money and nerves in the long run.
Preparation and prevention for the winter season
In order not to be in an unpleasant situation, it is important to monitor the status of the launch system in advance. Regular cleaning of battery terminals from oxides, checking the tension of the belts and monitoring the condition wiring significantly reduce the risk of rejection. Particular attention should be paid to the battery before the onset of cold weather.
It is recommended to have in the trunk a set for emergency start: wires for “lighting”, a charged booster or even a spare battery (if space allows). For owners of cars with automatic weapons, having contacts of a proven tow truck or roadside assistance service will also be a sensible step.
Do not ignore the first signs of malfunction: sluggish start, extraneous sounds when the starter is working, periodic failures. Timely replacement Worn bushings or brushes starter will cost less than buying a new unit or repair the engine after a failed start.
The best way to avoid starting problems in winter is to keep the battery charged and have a booster in the boot.
Frequently Asked Questions (FAQ)
Can I start the machine from the pusher if you accelerate to 100 km / h?
Theoretically, on some older 3- and 4-speed machines, this is possible, but the risk of damage to the transmission reaches 90%. On modern 6-8 step automatic transmissions and CVTs, this method does not work and is guaranteed to lead to breakage. The hydraulic transformer does not transmit moment at such speeds effectively for start-up, and the oil pressure is created by the pump that spins from the engine.
Why does the starter click but not spin?
A click means that the retracting relay is working and trying to push the bendix, but the starter is not rotating. The main reasons: the battery is discharged (lack of current), contacts are oxidized (loss of voltage), or the starter electric motor itself is defective (windings or brushes have burned). It is also possible to mechanically jam the engine.
Is it dangerous to close the contacts of the starter with a screwdriver?
Yeah, it's dangerous. A strong spark is possible, which can ignite gasoline vapors if there is a fuel leak. You can also get an electric shock or burn. In addition, on modern cars with immobilizers, the engine will still not start without a signal of permission from the ECU, even if the starter will spin.
Will the airbag work when hitting the starter with a hammer?
No, the shock sensors (accelometers) are tuned for sharp decolerations characteristic of an accident (high force strikes). A hammer hitting the body in the engine area does not activate the safety system. However, impacts can damage fragile elements of the starter itself or nearby sensors.