Replacing The Fuel Injection In Your 2008 Honda Accord Coupe

If you're looking to replace the programmed fuel injection in your 2008 Honda Accord Coupe, there are a few things you should know. Firstly, this is not a DIY job, and it's recommended that you leave it to a professional due to the risk of fire and the complexity of the repair process. The average cost for a Honda Accord fuel injector replacement ranges from $679 to $819, with labour costs estimated between $150 and $189, and parts priced between $529 and $630.

The programmed fuel injection (PGM-FI) in your Honda Accord is controlled by a computer called the PCM or powertrain control module. This computer uses information from various sensors to determine the fuel requirements of the engine and activate each fuel injector at the right moment for optimum efficiency.

Before attempting any repairs, it's important to consult a qualified technician or mechanic to ensure the correct parts are replaced and to avoid any further damage to your vehicle.

The PCM (powertrain control module) computer

The powertrain control module (PCM) is a small but important computer that monitors all engine control operations in real-time. It uses a large network of sensors, solenoids, sending units, and other electronic components to both receive and send information, enabling the vehicle to run at peak performance.

The PCM controls the engine function by moderating fuel injection rates, valve timing, ignition timing, throttle body position, and more. It also allows for inputs from other systems in the vehicle and may be able to control the transmission. The PCM is programmed to send electricity at a regulated voltage to engine sensors, control units, and other devices on the network. Information is simultaneously passed back into the PCM from all of these locations, allowing it to monitor conditions and be monitored itself.

The PCM is usually located in the engine bay, but some manufacturers place it inside the vehicle or even in the trunk. If you are looking to replace the PCM in your 2008 Honda Accord Coupe, you can expect to pay between $1,047 and $1,174 for the part itself, with labor costs estimated between $67 and $84.

It is possible to replace the PCM yourself, but it can be a complicated process as you will need to locate the PCM, which may be behind panels, and then perform the replacement. If you choose to undertake the replacement yourself, ensure you have the correct reference materials and experience, as well as the right tools and safety precautions, especially when working with fuel and electricity.

Intake manifold pressure

To replace the programmed fuel injection in a 2008 Honda Accord Coupe, you will need to access the fuel injectors, which are located behind the intake manifold. This means removing the intake manifold is a necessary step in the replacement process.

A manifold absolute pressure (MAP) sensor measures the air pressure within the intake manifold. This sensor helps the car's computer control the fuel injection and ignition timing. A faulty MAP sensor can cause issues such as reduced engine power, engine misfires, the check engine light turning on, and in some cases, the engine may stall or fail to start.

MAP sensors can be purchased online and are available for the 2008 Honda Accord. They are relatively easy to install, and no special tools are required. However, it is important to ensure that you are purchasing the correct part for your vehicle, as incorrect parts can cause further issues.

When dealing with fuel and engine repairs, it is important to take the necessary precautions to prevent fires and other potential hazards.

Atmospheric pressure

Fuel injectors typically fail after 80,000 miles, and replacement involves disconnecting the injector from the fuel rail and electrical connector. However, this is not a simple DIY task, as it can be a complicated process that carries a risk of fire if not done correctly.

When it comes to your 2008 Honda Accord Coupe, there are a few things to consider. Firstly, replacing the fuel injectors is a complex job that may involve removing many engine components, including the intake manifold, fuel rail and electrical connectors. This process can be made easier if your car has a plastic intake manifold that does not have oil or coolant passages.

Secondly, it's important to use high-quality, OEM parts when replacing the fuel injectors to ensure even power distribution across the engine and proper air-fuel mixture for all cylinders, resulting in smooth performance.

Finally, symptoms of a faulty fuel injector include reduced engine power, misfires, the check engine light turning on, and the engine stalling or failing to start. If you experience any of these issues, it's best not to drive your car and have it checked by a professional.

Exhaust-gas oxygen content

Oxygen sensors, also known as lambda sensors, are electronic devices that measure the proportion of oxygen in the gas being analysed. They are commonly used to measure the exhaust-gas concentration of oxygen in internal combustion engines in automobiles and other vehicles. This measurement helps calculate and adjust the air-fuel ratio so that catalytic converters can work optimally.

The oxygen sensor does not directly measure the oxygen concentration in the exhaust gas. Instead, it measures the difference between the amount of oxygen in the exhaust gas and the amount of oxygen in the air. When there is a demand for oxygen, the voltage output rises due to the transportation of oxygen ions through the sensor layer. Conversely, when there is an excess of oxygen, the voltage output is lower.

The zirconia lambda sensor is a commonly used sensor that operates by measuring the difference in oxygen between the exhaust gas and external air. It generates a voltage or changes its resistance based on this difference. The sensor has a non-linear response to oxygen concentration, with higher sensitivity near the stoichiometric point and lower sensitivity when the oxygen concentration is very low or high.

The wideband zirconia sensor is a variation of the zirconia sensor that has been widely used for car engine management systems. It incorporates an electrochemical gas pump that allows the control unit to adjust fuel delivery and ignition timing more rapidly.

Monitoring the oxygen content in exhaust gases is important for diagnosing engine emission problems and maintaining maximum engine performance. It also helps identify compliance issues and ensures that catalytic converters are functioning properly. By measuring the relative levels of oxygen and carbon dioxide in the exhaust gas, it is possible to determine the purity of the exhaust and detect any air dilution.

The Honda Accord Fuel Injector Replacement cost includes labour costs and parts, ranging from $679 to $819. However, this range does not include taxes, fees, or unique location-based variations.

Intake air temperature

The Intake Air Temperature (IAT) sensor is built into the mass air flow sensor or, in some vehicles, mounted to the air filter duct housing. The sensor detects the intake air temperature and transmits a signal to the Engine Control Module (ECM). The temperature-sensing unit uses a thermistor, which is sensitive to changes in temperature. The electrical resistance of the thermistor decreases in response to a temperature rise.

The IAT sensor contains a hot wire and a thermistor. The resistance of the hot wire and thermistor changes due to the intake air temperature and airflow. The control circuit in the Mass Air Flow (MAF) sensor controls the current to keep the hot wire at a set temperature. The current is then converted to voltage in the control circuit and output to the ECM/PCM.

The IAT sensor is located in the intake air passage. To diagnose and fix the P0113 2008 Honda Accord code, which indicates an issue with the IAT sensor, you should first review the 'Possible Causes' and visually examine the corresponding wiring harness and connectors. Ensure you check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

You can replace the IAT sensor with a new OE IAT sensor, which is an affordable, directly compatible, and durable option. When choosing an IAT sensor, ensure that you select the correct part number and check your car's make, model, trim, engine, product appearance, and part number.

Frequently asked questions