If the engine does not start on a cold Solaris

A little about the car

Hyundai Solaris is considered a budget car, the operation of which is possible in Russia. The vehicle manufacturer took care of this, adapting the design and equipment of the vehicle to the rather harsh conditions of our country. Since 2011, the production of two modifications of Hyundai Solaris began:

Among the advantages of this model are simplicity and reliability, which was noted by many Hyundai owners. However, despite the positive assessment of the majority of car enthusiasts, the car can completely suddenly let the driver down. The problem will arise if the car stalls while driving, or the car stops starting altogether.

Also, many car enthusiasts noted problems with the engine after starting the vehicle. What could be the reasons for possible breakdowns and how can they be dealt with?

Diagnostics, catalytic converter valve replacement

This valve is designed to provide ventilation in the system, and failure of the element leads to serious damage to the vehicle. As a result, if a malfunction occurs in the adsorber, the car engine will not be able to start.

Valve operation is checked using an error diagnostic system. If a problem is detected, specialist help is required.

– a container with activated carbon or other substance that acts as a neutralizer and traps fuel vapors, preventing them from entering the atmosphere.

You can check it using the error diagnostic system - the codes are stored in the controller’s memory.

What to do if the starter does not turn

The first reason for a possible breakdown may be that the starter does not turn. This situation is provided for in the vehicle operating manual. The document states what the cause of the malfunction may be, and also provides step-by-step instructions on how to fix the problem.

One of the most common reasons for the inability to start the engine is slow rotation of the crankshaft. This is especially true for cars using an automatic transmission. In this case, the gear shift lever should be moved to neutral. The car may not start the first time, and the action will have to be repeated.

Another reason could be that the battery is low. Most drivers miss this point, getting used to the flawless operation of the car.

In addition, very often this problem occurs in cold weather. There are several ways to determine whether there is enough charge to start the engine:

• First, you should check the battery terminals.
• Then it is recommended to inspect the wires connected to the starter. They should not show any damage in the form of signs of tearing. The connection point should also be tight.
• If both points above do not arouse any suspicion, you should turn on the light in the car. If the lighting is dim, the battery charge is low.

To prevent the car from stalling during the next attempt to start it or while the vehicle is moving on the road, it is recommended to recharge the battery. Otherwise, the starter clicks until it finally stops working.

Also among the reasons for the impossibility of starting the engine in this situation are:

• immobilizer malfunction;
• faulty starter;
• possible short circuit of the windings;
• system blocking;
• faulty wires at the point of contact with the ignition switch.

The last listed points relate to complex cases, so to solve such a problem you should visit a car dealership, where specialists will correct the defects that have arisen.

Hyundai Solaris won't start

Added by avtorin on 01/04/2018

In this article we will talk about why the Hyundai Solaris does not start. There can be a huge number of reasons for this, however, they are all quite typical for most cars in this class. So, Solaris won’t start – reasons and troubleshooting methods.

To begin with, it’s worth clarifying that “won’t start” is a very loose concept, and therefore, let’s divide the article into several subsections that will help narrow down the troubleshooting area.

The most common option is the first one, so let's start with it.

Hyundai Solaris does not start - the starter does not turn.

So we come to our car, turn on the ignition, then turn the key and... Nothing happens! This situation leaves most drivers in a slight shock, and some are generally very frightened, however, there are not so many reasons for this.

Let's start with something simple. If the Solaris does not start and the starter does not turn, then first of all we pay attention to whether the immobilizer lamp is on. This is the most common problem, a lot of immobilizer antennas have been replaced under warranty, but for some, this element is outliving the warranty repair period, which means it will have a long life. Unfortunately, only a tow truck and a competent diagnostician will help us here. The problem will not necessarily be in the antenna, maybe in the alarm unit.

If the car does not start and the starter clicks when you turn the key, then we can say with confidence that

You need to dig towards the faulty starter. In most cases, it helps one to turn the key, and the other to “bring him to his senses” with light blows (for example, with a spray gun) on the starter. The whole problem lies in worn out brushes; replacing them will help.

However, if the starter clicks, this may also indicate a malfunction of the starter as a whole. If the starter does not click, and the Solaris, of course, does not start, then you need to check: the solenoid relay, the starter fuse, and also listen to whether anything clicks at all. The thing is that the starter in any case must be powered through the relay; it must also click when the key is turned.

If even the starter relay does not click, then we begin to dig towards an abnormal alarm, because most electricians install a starter interlock. Unfortunately, the average driver is unlikely to understand this situation, so we will not consider this point further. Of course, you shouldn’t ignore the malfunction of the ignition switch.

Among other things, on cars with an automatic transmission, a malfunction of the gear selector is often encountered. She simply does not understand its position, and the engine can only be started in neutral or in park.

Solaris does not start - the starter turns.

If the Solaris does not start, but the starter turns, then there are many more reasons, and finding the fault, of course, is much more difficult. In addition, this is not a VAZ 2114, so there are a number of inconveniences. In any case, we need to narrow the search as much as possible, and to do this we immediately unscrew the candles.

The spark plugs are wet - the Hyundai Solaris will not start.

If Solaris does not start and the spark plugs are wet, then we can say that the fuel system is working normally and there are no problems with it. This means the problem is in the ignition system. To begin with, we remember how long ago we changed the spark plugs, if less than 10 thousand kilometers ago, then we forget, if not, then we change the spark plugs.

Next we have the ignition coils, all of them cannot fail, so we practically forget this option. As a consolation, you can check the resistance of the coils relative to each other; they should be at least approximately close.

Unfortunately, it is impossible to fully check the ignition system on a car with a coil on a spark plug on your own, so this is where the capabilities of the average person end.

The spark plugs are dry - the Hyundai Solaris will not start.

If the Hyundai Solaris does not start, the starter turns, but the spark plugs are dry, then first of all you need to listen to whether the fuel pump is working. Unfortunately, alarm installers can also lock it. If the pump does not work, then you must first measure the voltage at the chip. Most likely, the matter will end with replacing the fuel pump.

In addition, it is worth clarifying that a working fuel pump may not provide the required pressure to the system; this malfunction can only be determined using a pressure gauge, which is connected to a section of the fuel system. It was already said above that this is not a VAZ, since there is no spool valve to control the presence of fuel in the ramp.

The starter turns, but the engine does not start

Another standard situation is when the crankshaft turns, but the car does not start. Here you should perform the following sequence of actions:

• Check the gasoline level.

• Assess the condition of electrical circuits and wires.

• Conduct coil diagnostics.

Finally, you should make one more attempt to start the engine. Often the problem lies in the breakdown of the spark plugs. There is no need to check the coils, since the car has enough of them, and a simultaneous breakdown of all coils at once is practically excluded.

Thus, when checking candles, you can consider two possible cases and their solutions.

Basically, such actions can solve the problem and start the Hyundai Solaris engine. However, if all else fails, it is recommended to seek help from qualified professionals.

Hyundai Solaris won't start

• Why Hyundai Solaris won't start: reasons
• Diagnostics: what to check
• Spark
• Rail pressure
• Sensors
• Canister valves
• How to fix the problem
• The starter turns
• The starter doesn't turn over

Hyundai Solaris engines released before 2021 are similar in design. It may be difficult to start the engine due to failures of three different sensors, as well as problems in the electrical network and a breakdown of the canister purge valve. In the article we will look at how to check these elements, as well as eliminate all possible causes of difficulty starting the machine.

Why Hyundai Solaris won't start: reasons

The situation can develop in different ways. Sometimes, after turning the key in the ignition, the engine does not start, but the fuel pump still works and the starter turns. Every time since the third Hyundai, it finally starts and works fine for several days, then the situation repeats itself. Sometimes the car completely stops starting, and the starter shows no signs of life.

There are several reasons why Hyundai car engines refuse to start. These include deviations in the car’s electrical system, and failures of various sensors; the adsorber purge valve can also fail. If you dig deeper, the cause of the malfunction may be the use of low-quality fuel. It's worth checking the battery and air filter. Diagnosis must be carried out immediately.

Diagnostics: what to check

If the crankshaft turns, but the Hyundai engine is inactive and stalls, then look at the following points when diagnosing.

Spark

Set the key to the “LOCK” position and remove the plastic cover. We pull out one coil and install an additional candle. Its body must be pressed firmly against the mass. After this, you need to turn on the starter for 3-4 seconds. If the spark plug does not spark, it is most likely a wiring issue. Even if there is a spark, the problem may still be in the wiring - if the insulation is broken.

Rail pressure

If the Solaris does not start, you can try turning off the ignition, wait 4 hours, then do the following:

• Remove the minus terminal.
• We attach a pressure gauge between the hose and the lamp (do not forget about the tightness of the connections).
• We connect the negative terminal to the battery. Turn on the ignition. The pressure gauge must produce a pressure of at least 340 kPa.

If the pressure is lower, the cause is a clogged fuel filter. The pump may be faulty or ice has formed in the fuel line. There are no diagnostic valves on the Solaris engine ramp, which creates additional problems for car enthusiasts.

Sensors

We check the DBP and DPKV sensors, as well as the thermometer. If the DPKV sensor is faulty, engine starting is prevented. On DBP and DPKV you can only correct the connection, with a thermometer you can do this: disconnect it, connect another sensor to the plug. After this, if the thermometer is faulty, the engine will start.

Canister valves

Disconnect the battery. After removing the supply pipe, disconnect the connector and remove the valve. Then we connect it to the plug again, after which we connect the battery. If the valve clicks when turning the ignition key, it is working.

How to fix the problem

A common cause of the problem is the use of low quality fuel. Hyundai owners have probably noticed that candles quickly become covered with soot. Of course, they can be cleaned and replaced. But this is only a temporary solution to the problem, so the fuel will have to be changed.

The starter turns

If the starter starts to spin, but the car does not “come to life”, this may happen for the reasons stated above. If there is no spark and it has been determined that this is a consequence of a wiring fault, it must be replaced. It is not necessary to change all the wiring - just the damaged wires are enough.

If the diagnosis reveals that the pressure in the rail is below normal, you need to check the fuel filter. If it is clogged, it is replaced. The reason may be the pump. If it is faulty, it should also be replaced. In general, all broken sensors must be replaced - the same goes for the thermometer.

If a malfunction of the adsorber valve is detected, you can try to clean it. Perhaps it became clogged with coal dust that got into it from the adsorber itself.

The starter doesn't turn over

Look at the starter itself - the brushes are probably worn out. The starter itself may be faulty - then it will click. Nothing other than a replacement can be recommended here. If there are no clicks, check and (if necessary) replace the starter fuse or solenoid relay.

Most of the described breakdowns can be fixed on your own. In “neglected” cases, it is impossible to do without a thorough repair, but, fortunately, the Hyundai Solaris cannot be called a complex car in terms of design.

Replacing the sensor and thermometer

Sometimes it happens that the engine does not start due to sensor failure. Usually, to urgently fix a breakdown, you can use the advice of changing the places of two devices, if both are working.

However, if there is a breakdown in any of the sensors, you will not be able to start the car. Among the reasons causing the device to malfunction are:

• Penetration of air into the gaps between the elements and the fitting.
• Dirt getting into the pipeline.
• Failure of one of the existing sensors.
• Deformation or rupture of wires, leading to failure of the entire system.

The picture shows the idle air control on the Hyundai Solaris (IAC).

Sensor failure in this list is considered the main cause of the malfunction. In this case, it is necessary to replace this element as soon as possible. Diagnostics can be carried out independently with the engine idling. However, you won’t be able to replace the element yourself; therefore, you will still have to visit a service center.

Hyundai Solaris engine does not start

Owners of Hyundai Solaris have encountered this effect - the engine does not start. We will try to understand the main reasons and their elimination.

Video material

The video will tell you in detail why Solaris does not want to start

We climb into the engine

First of all, it is recommended to check the cooling system temperature sensor. It is because of incorrect data that the electronic engine control unit can disrupt the fuel supply and create a lean mixture.

The next place to look for a problem is the injectors. It is defective fuel injection that can lead to the engine being difficult to start not only when the engine is hot, but also when it is cold. To check the elements, you need to dismantle them from the car and then check them on a special stand.

It is also worth paying attention to the fact that there may be a rupture of the fuel regulator membrane. As a result, gasoline enters the intake manifold, which leads to an enrichment of the combustible mixture. In turn, an over-enriched mixture is difficult to ignite, and in most cases does not burn at all.

But, for an injection engine, these are not all the reasons. The most common reasons were discussed earlier, and now it is worth considering less common causes. Let's start with the fact that the check valve of the fuel pump may fail, which will pump fuel back and after turning off the engine there will be no gasoline in the system until it is restarted.

Also, meters and sensors can affect the repeated hot start of the motor. Thus, failure of the following meters may make it difficult to start the engine when hot:

• Crankshaft position sensor. Incorrect measurement of the crankshaft position will lead to the fact that the data received by the electronic engine control unit is not reliable, and accordingly the normal supply of fuel to the combustion chambers will be disrupted.
• Mass air flow sensor. If this meter fails, air can enter in large quantities, which leads to an incorrect air-fuel mixture ratio. In turn, this causes poor engine starting.
• Idle speed sensor. This meter is involved in the start-up and initial operation of the engine, and therefore its failure complicates not only the start-up of the power unit, but also its idling operation.

High voltage wires. On an injection engine, it is quite difficult to identify a malfunction in high-voltage wires, since they are indirectly related to many malfunctions. But checking the elements is quite simple. To carry out diagnostic operations, it is necessary to dismantle the elements from the vehicle and ring each element with a tester. The resistance should be about 5 ohms.

Another significant reason for the poor start of a fuel-injected car is the failure of the software of the electronic engine control unit. To determine the malfunction, you will have to connect directly to the on-board computer and conduct a full diagnostic. If any faults are found, they should be corrected.

Many motorists try to fix the problem themselves. This is not recommended, as it can only cause harm. As practice shows, it is worth contacting professionals who will quickly classify the fault and fix it.

Diesel

For a Hyundai Solaris diesel engine, the primary cause is the high pressure fuel pump. Often the cause of the malfunction is quite simple - failure of the oil seals and bushings. In this case, routine maintenance of the unit will help. On the other hand, the reason may be hidden in the breakdown of the plunger pair, which actually leads to a major overhaul of the element.

Electrics

Another element that will affect engine starting is the control injector temperature sensor. Failure of this electronic element will cause a changed injection angle. To fix the breakdown, it is worth replacing the sensor.

As for Solaris gasoline engines, so for a diesel power unit, a malfunction of the engine control unit disrupts the operation of all systems. To fix the problem, you will have to connect to the motor and carry out repair and diagnostic operations.

Electronic sensors

The electronic injection system is equipped with special sensors, thanks to which interaction with the engine ECU is realized. Failure of individual electronic components can result in incorrect signals being sent to the control unit and the engine cannot be started.

If the engine does not start, then you need to check several sensors:

• camshaft position sensor (CPR);
• throttle position sensor (TPS);
• mass air flow sensor (MAF);

It is also necessary to simultaneously clean the throttle, check the air filter and the XX valve. Self-diagnosis of sensors can be carried out using a multimeter

Hyundai Solaris won't start

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AVTORIN.com

The reason why the car won't start lies in one simple detail - something is missing. To start an engine normally, three things are required: a spark at the right moment, oxygen and fuel in the right proportions. If at least one condition is violated, “there will be no miracle.” In this article we will look at why the car is difficult to start.

Fuel

The fuel is supplied under pressure, which should be from 3 to 4 atmospheres, depending on the make and model of the car. In addition, we are talking about gasoline engines with distributed injection (the injectors are located in the intake manifold). Among other things, the pressure in the fuel line must be maintained for another 5 minutes after the ignition is turned off.

There are several elements that can cause the Solaris car to start difficult.

1. Fuel pump. It simply may not provide the required performance. This means that it must be “plugged” with a pressure gauge. Under such conditions, the pressure gauge should show at least 5 atmospheres. A good indicator would be 6 atmospheres. If less, the pump needs to be replaced. You also need to check the check valve on the pump, because it often disappears, the fuel simply drains from the line
2. Pressure regulator (RDT). It can be installed either on the ramp or in the fuel module if there is no return line. To check, you need a compressor with a pressure gauge. Next we blow into the outlet pipe of the module and look at the pressure gauge. If the RTD is triggered between 3 and 4 atmospheres, then everything is fine.
3. Also, if the Solaris car becomes difficult to start, it is advisable to replace the fuel filter.

Ignition

In fact, checking the ignition system at home is impossible. Yes, you can replace spark plugs, high-voltage wires, module or coils, depending on what it costs. However, this is not a diagnosis, it is a replacement at random.

You can measure the resistance of the primary winding of the coil (module) and compare it with the documentation for the car.

Air

But here everything is not so simple. For example, a car doesn’t start well when it’s cold. To start, a richer mixture is required, however, the slightest air leak will become critical. This could be either a faulty IAC or a simple drying of the gasket between the receiver and the throttle.

That is why, if the Solaris car has trouble starting, it is necessary, first of all, to check the throttle body for air leaks. This is done using a smoke generator.

There is also a spraying method. Take any spray that burns, for example, carb cleaner (carburetor cleaner). After this, with the engine running, suspicious areas are sprayed, and the engine’s reaction to these actions is checked. It’s worth noting right away that this method can result in a rather large fire, so you must follow fire safety precautions.

If after applying the spray to a certain place the engine speed rises, then this is where you need to look for air leaks.

Replacement and repair of DPKV

Failure of the crankshaft position sensor also causes the vehicle to be unable to start. With the help of this element, the operation of the ignition and power systems is synchronized. If there is a failure, communication between the systems is interrupted, which prevents the engine from starting.

If the reason is the failure of this element, it is necessary to use computer diagnostic services. If serious problems are detected, the sensor must be replaced, and only experienced specialists can do this.

Starting a cold engine

A car, like a person, also freezes in winter, and if it is not new, then in subzero temperatures you will have to try very hard to start the engine. In the cold season, the air damper of a carburetor engine must be closed.

The lower the temperature, the more.

One more nuance: it is not recommended to turn on the starter for more than 10 seconds, especially in winter. After each attempt, we advise you to take a short break (one minute will be enough).

This time is enough for the battery to recover and return to normal operating condition.

If you have already made three or four attempts, but the engine still does not work, then you need to look for reasons. Sometimes, when starting, single flashes occur in the cylinders, and it seems that the engine is about to start functioning. The driver is in no hurry to turn off the starter, but time passes and the engine does not start. Such continued attempts are unacceptable, as they have a very negative impact on the battery and it may discharge.

Watch the video tutorial “How to start the engine”:

Removing and installing the starter

Be sure to disconnect the negative terminal of the battery!

The starter is installed at the front of the engine

Press the latch and disconnect the control wire block from the traction relay

Remove the protective cap and unscrew the nut securing the power cable tip

Disconnect the wire tip from the contact bolt

Unscrew the bolt securing the wire holder and move the holder to the side

Unscrew the two starter mounting bolts from the clutch housing side

And remove the starter

Simple starter test

Using a screwdriver, check the ease of movement of the drive coupling along the shaft

Use a screwdriver to turn the drive gear. It should easily rotate relative to the coupling hub in the direction of rotation of the armature and should not rotate in the opposite direction

We connect the negative terminal of the battery with the starter housing using cigarette lighter wires or powerful wires.

We connect the second wire with one end to the positive terminal of the battery, and the second wire to the terminal of the control wire of the traction relay

If the traction relay is working properly, a click is heard and the drive clutch extends. Otherwise, the traction relay is faulty and needs to be replaced

We disconnect the wire from the control terminal of the traction relay and connect it to the contact bolt of the traction relay. The starter rotor should rotate.

Otherwise, the starter needs to be repaired.

We install the repaired or new starter in the reverse order.

Possible starter malfunctions, their causes and solutions

Cause of malfunction Remedy

When the starter is turned on, the armature does not rotate, the traction relay does not operate:

Interturn short circuit in the pull-in winding of the traction relay, its short to ground or open - Replace the traction relay

Open circuit in the power supply circuit of the starter traction relay - Check the wires and their connections in the circuit with the control contact of the starter traction relay and the ignition switch (lock)

The contact part of the ignition switch is faulty - Replace the contact part of the ignition switch

Traction relay armature is stuck - Remove the relay, check for ease of movement

The commutator is burning, the brushes are stuck or worn out – Clean the commutator, replace the brushes

When the starter is turned on, the armature does not rotate or rotates too slowly, the traction relay is activated:

The fastening of the wire ends connecting the power unit to the body is loose - Tighten the fastenings of the wire ends

The contact bolts of the traction relay are oxidized or the nuts securing the wire lugs on the contact bolts are loose – Clean the contact bolts, tighten the nuts securing the wires

The commutator is burning, the brushes are stuck or worn out – Clean the commutator, replace the brushes

Break or short circuit in the armature winding - Replace the armature

When the starter is turned on, the traction relay is activated and switched off repeatedly:

Battery is low – Charge the battery

Open or short circuit in the holding winding of the traction relay - Replace the traction relay

Significant voltage drop in the power supply circuit of the traction relay due to severe oxidation of the wire tips - Check the wires and their connections in the circuit from the battery to the control contact of the starter traction relay

When the starter is turned on, the armature rotates, the flywheel does not rotate:

Freewheel slipping - Replace freewheel

The drive gear does not engage with the flywheel ring gear (noise is heard, the teeth of the engagement flywheel are worn out) - Replace the drive or flywheel

Starter noise when the armature rotates:

Excessive wear on bearings (armature shaft bushings) – Replace bearings or starter caps

The starter is loose or the drive side cover is broken – Tighten the fastening nuts or replace the drive side starter cover

Damaged clutch gear teeth or flywheel ring - Replace clutch or flywheel

The gear does not disengage from the flywheel:

Clutch jamming on the rotor shaft splines – Clean the splines and lubricate them with engine oil

Traction relay armature is stuck - Replace the traction relay or remove the jam.

We climb into the engine

First of all, it is recommended to check the cooling system temperature sensor. It is because of incorrect data that the electronic engine control unit can disrupt the fuel supply and create a lean mixture.

The next place to look for a problem is the injectors. It is defective fuel injection that can lead to the engine being difficult to start not only when the engine is hot, but also when it is cold. To check the elements, you need to dismantle them from the car and then check them on a special stand.

Starter malfunctions and features

A unique new catalog starter for Solaris costs about 15–16 thousand rubles. However, it does not always require replacement if it fails or fails to operate.

The first and main symptom indicating a malfunction of the unit is the starter’s refusal to turn the flywheel. In this case, the starter may not respond at all to turning the ignition key or to the start button, and may make characteristic sounds.

In the first case, the cause of failure may be not only the starter, but also the fuse, the starter relay, or the ignition switch itself.

This can be diagnosed as follows:

1. If the starter does not turn the crankshaft flywheel, it is possible that the battery is not producing enough voltage to operate the starter motor. In this case, you need to check the battery charge level with a multimeter; it should be within 12–13 V.
2. There is no contact in the ignition switch. The contact group of the Hyundai Solaris ignition switch supplies power to the starter when contacts 50 and 30 are closed. They need to be closed together for a few seconds, and the starter should begin to rotate the crankshaft flywheel.