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Probe and sensor for car without a license: key elements of the motor function

The probes and sensors are essential to ensure the optimal functioning of a car-free car. These components permanently measure different parameters (temperature, pressure, position, engine speed ...) and transmit this information to the computer or control module. They ensure reliable, economical and pollution standards.

Role of probes and sensors in a car without a license

In a modern vehicle, engine management is based on the data collected by a multitude of sensors. Each probe has a specific function and provides an electrical signal in real time, which is interpreted by the calculator to adapt the injection, preheating or the ignition.

Most common probes

• Engine temperature sensor : Measures the temperature of the coolant and triggers the fan or warns the driver in case of overheating.
• Air temperature sensor : Used to adjust the air mixture-fuel.
• Lambda probe : Controls the wealth of exhaust gas to reduce pollution and optimize combustion.
• Oil pressure probe : Alert in case of pressure drop, thus protecting the engine.
• Preheat probe : Enables the relay to prepare the start of diesel engines.

Essential sensors

• Engine speed sensor : gives the speed of rotation of the motor to manage the injection.
• Crankshaft position sensor or camshaft : Synchronize the injection and ignition.
• Accelerator pedal sensor : Transmits the torque request to the engine.
• Admission pressure sensor : Measures depression or pressure in admission to calculate the amount of fuel.
• Speed sensor : Indicates the speed of the vehicle to the counter and the ECU.

Symptoms of a probe or failed sensor

A poor sensor or sensor can cause annoying malfunctions, fuel overcoming, or a complete immobilization of the vehicle.

Frequent signs

• Engine light on or flashing on the dashboard.
• Difficult start or unstable slow motion.
• Power loss or irregular engine speed.
• Overcoming fuel.
• Abnormal smoke emissions (black, white).
• Erratic behavior of accessories (fan, temperature indicator).

Risks in case of no-replacement

• Progressive deterioration of the engine due to a mixture that is too rich or too poor.
• Risk of motor case by overheating if the temperature sensor is defective.
• inefficient depollution system, resulting in a release of harmful gases.
• Total failure if HS diet or position sensor (engine that does not start).
• Higher repair costs if we expect too much before intervention.

Diagnosis and control of probes and sensors

Before replacing a probe or sensor, it is important to confirm the failure. A simple default code can come from a wiring or power supply problem and not the probe it-same.

Diagnostic steps

• Scan the calculator with an OBD tool to identify the error code.
• Check the voltage or resistance of the probe with a multimeter.
• Visually check the connectors and the electric beam.
• Clean the probe if possible before replacing it (for example, dirty lambda probe).
• Test the vehicle after erasing the fault to confirm the diagnosis.

Preventive maintenance

• Clean the connectors to prevent oxidation.
• Replace probes at the intervals recommended by the manufacturer.
• Regularly check the status of the engine beam.
• Check the proper grounding of the sensors.
• Perform a check before cold seasons or long journeys.

Replacement of a probe or sensor

Replacement is usually simple if access is cleared, but requires some precautions to avoid damaging the thread or the new sensor.

Mounting precautions

• Disconnect the battery before any intervention on the electrical circuit.
• Use a suitable key (eyekey or special sleeve for Lambda probe).
• Do not force if the probe is seized: use a device and let action.
• Respect the recommended tightening torque.
• Check the tightness and reconnect the connector correctly.

Control after replacement

• Clear the default codes with the diagnostic suitcase.
• Start the engine and check for the absence of alert indicators.
• Check the parameters in real time to confirm the correct operation.
• Do a road test and observe the general behavior of the vehicle.
• Reconstroulate connections after a few kilometers.

Catalog Pro VSP : probes and sensors for car without a license

Pro VSP offers a wide selection of probes and sensors Adapted to the main car engines without a license. Each product is chosen for its reliability and compatibility. Our data sheets detail the dimensions, connectors and electrical characteristics to prevent control errors.

Recommended associated parts

When replacing a probe or sensor, it may be wise to check the other parts of the engine. Find our complete selection of motor parts and silent-Blocks here: Car parts car without license.

Budget & Related Costs

The price of a probe or sensor varies according to its function and the complexity of the technology. Modern electronic sensors may be more expensive, but they are essential to avoid heavier repairs in the event of a motor failure.

Typical expenses

• Engine temperature or coolant probe.
• Diet sensor or crankshaft position.
• Lambda probe for exhaust control.
• Hand-if replacement in the workshop.
• Erasing the default and road test after intervention.

Tips for extending life

• Avoid water infiltration in the engine compartment.
• Do not neglect regular interviews (drain, filters).
• Check the cleanliness of the connectors after a motor washing.
• Use quality parts for a reliable signal.
• Monitor engine lights and quickly intervene in the event of a warning.

Also find our community on our forum Avenir VSP !