Fuel temperature sensor

Fuel temperature sensor

 

A fuel temperature sensor is fitted in cars to control and regulate the amount of fuel needed for consistent and efficient performance. It can transmit data to the car's ECU and helps fine-tune the amount of fuel input.

What does a fuel temperature sensor do?

 

A fuel temperature sensor contributes to overall engine safety. It allows the amount of fuel injected into the cylinder to be regulated. It is a substantial part of the vehicle's fuel system that observes fuel compression. The sensor involves a thermistor with varied opposition to fuel temperature. In case of low fuel temperature, the resistance becomes higher.

It has a drastic impact on engine performance. The fuel temperature sensor informs the ECU when it gets too hot which means more fuel is needed for the engine. It will make the fuel thicker and confirm that it is not burning fast. Preferably, the fuel temperature should be below 40°C, which helps maintain the engine's thermal competence.

In addition, when fuel cools too much, it becomes denser. So the car engine needs less fuel because it burns more slowly. In general, the fuel temperature sensor is advantageous in defining the amount of fuel.

The sensor is located right next to the air intake duct and throttle valve housing. You can refer to your car's guide to find the exact location as it may differ depending on the make of car.

The fuel temperature sensor is accurately designed to assess the vehicle's fuel temperature. This makes it easier to optimise and manage the air-fuel mixture ratio. A well-functioning fuel temperature sensor helps to ensure the efficiency of the vehicle's engine, regardless of the outside temperature.

When the combustion process is carried out efficiently, it is better for the environment, meaning that fewer harmful substances are discharged through the exhaust system. On the other hand, a poor fuel temperature sensor leads to blockage, reduced power and fuel efficiency.

 

What happens when the fuel temperature sensor stops working?

 

A faulty or inoperative fuel temperature sensor either stops sending signals or sends false signals to the system. As a result, it becomes problematic to cope and estimate fuel consumption.

Globally, the number of vehicles sold and bought is growing. Thus, it has become necessary to ensure that fuel consumption is managed according to strict emission control regulations.

Whenever you experience fuel temperature sensor errors, it's best to take immediate proactive action. You can visit a mechanic or go to the service centre.

First of all, you need to know what causes the fuel temperature sensor to malfunction. Mostly, it's due to overexposing the car to extreme temperatures. It's also due to weathering and corrosive fuel vapors. Furthermore, sometimes overfilling the fuel tank causes an overfill. As a result, it damages the engine and the sensor.

Here are some additional causes of a problematic fuel temperature sensor:

• A programming problem in the powertrain control module.
• Minor or major fuel temperature sensor failure
• Open or damaged cables or connectors.

If it continues in this way, the car will start to consume more fuel than necessary. Here are some common symptoms of a faulty fuel temperature sensor:

1. Reduced fuel economy

 

It is the most common symptom. Most importantly, a fuel temperature sensor helps ensure that the right amount and mix of fuel is being consumed. When there is a higher fuel ratio, it is necessary to cool the engine temperature. In case of a faulty fuel temperature sensor, the reported temperature will not be accurate, as a result the car will consume more fuel than necessary.

2. Unbalanced temperature assessments

 

This is another indication of a faulty fuel temperature sensor. Here you will notice more fluctuations than usual in the temperature readings. When you drive, it may indicate the level higher or lower than it is. In this case, it is best to visit a mechanic urgently.

3. Black smoke from the exhaust pipe

 

When the fuel temperature sensor is not working, it does not calculate or adjust the fuel ratio. So excess fuel is used and burned in the combustion chamber. You may notice black smoke coming out of the exhaust pipe at certain times.

4. Engine overheating

 

When the fuel temperature sensor is not working properly, it usually gives cold signals. This confuses the system and gives wrong information. Sometimes your car will indicate engine overheating when it is not. Your dashboard will have warning lights on. If you ignore this, your car's performance will suffer.

In addition, if engine overheating is constant, it should be checked immediately by a mechanic. A professional technician can help avoid any further damage. Ignoring this can lead to costly repairs in the future.

 

5. Check that the engine light comes on

 

A faulty fuel temperature sensor also turns on the check signal lights on the dashboard because the car's system detects misleading and wrong signals. In this case, it's best to visit your mechanic immediately.

 

Conclusions

 

The bottom line is that a fuel temperature sensor is an integral part of the vehicle. If it is not working effectively, it does not influence the starting of the car, but nevertheless affects the overall performance of the engine. Ignoring the signs and symptoms can lead to serious damage that can be costly in the future.