How to update gpcm flow rates when replacing injectors?
⇒ If any injectors are replaced, go to Reprogram Injector Flow Rates parameter and enter the flow rate number of the new injector to the corresponding cylinder. The flow rate numbers will automatically update both control modules. ⇒ If the ECM was replaced, go to Copy GPCM Flow Rates to ECM parameter and reprogram the ECM.
Where is the injector information stored in the ECM?
The control functions for the fuel injection system are integrated in the engine control module (ECM). Each injector’s flow rate information and cylinder position are stored in the memory of both the glow plug control module (GPCM) and the ECM.
When do you change the fuel injector flow rate?
The fuel injector flow rate programming must be done when any of the following procedures are performed: The ECM is replaced. The GPCM is replaced. Any fuel injectors are replaced. If the ECM does not communicate, the flow rate information can be retrieved from the GPCM.
What should I do if my fuel injector is clogged?
Clogged Injectors. Although there is some quality “pour in fuel tank” injector cleaner that might help to keep your fuel injectors in good shape the only true and tested way to clean fuel injectors properly are and have always been to do it outside the engine and with the proper cleaning equipment.
How does the engine control module ( ECM ) work?
The ECM takes the information from the engine’s various sensors, and uses that information to calculate and tune engine spark and fuel for maximum power and efficiency. The ECM plays a crucial role in newer vehicles, where many (if not all) of the essential functions of the car are controlled by the ECM.
How does a bad ECM affect fuel economy?
Poor Fuel Economy. A faulty ECM disallows your engine from knowing how much fuel to burn in the combustion process. Typically, the vehicle consumes more fuel than it should in this situation. You’ll end up paying more for gas than you would with a functioning ECM. The ECM plays a vital role in engine performance.
What happens if your ECM is not working?
A faulty ECM disallows your engine from knowing how much fuel to burn in the combustion process. Typically, the vehicle consumes more fuel than it should in this situation. You’ll end up paying more for gas than you would with a functioning ECM. The ECM plays a vital role in engine performance.
How do you know when to replace a fuel injector?
Another effective test is to measure the pressure loss in the fuel rail when each injector is fired and pulses for a set period of time. Use an electronic injector pulse tester for this. As each injector is energized, a fuel pressure gauge is observed to monitor the drop in fuel pressure.