What causes no fuel injector pulse?
When these fuses blow, the system they support stops working, and the engine stops running. As a result, there is no injector pulse while craking. In case of that, there is no injector pulse or spark, which means that if your ECU has failed in operating in this case you have to get your ECU changed or visit an expert.
What causes no injector pulse and no spark?
With no spark and no injector pulse, you could have a bad crank sensor or a bad IC module, or there could be a problem with the wiring in between them…..
What would cause no power to the fuel injectors?
No power to the fuel injectors can be caused by a few things. If the relays, fuses, and computer all check out then I would move on to looking at the engine management and fuel system. A no start condition can also be caused by a faulty fuel pump, or any of the associated components.
What part turns the fuel injectors on and off?
The amount of fuel injected is controlled by a flap valve located in the engine’s air intake. The flap sits beneath the control unit and rises and falls in response to airflow – as you open the throttle, the ‘suck’ from the cylinders increases the airflow and the flap rises.
Does crank sensor control injectors?
The crank position sensor also manages fuel injector function in vehicles with distributorless ignition systems. A failed crank position sensor may not trigger fuel injectors at all which will result in a no-start condition for the vehicle.
What tells the fuel injectors to open?
The ECU is the brain of the operation. It uses engine RPM and signals from different sensors to meter the fuel. It does this by telling the fuel injectors when and how long to fire. The ECU often controls other functions like the fuel pump and ignition timing.
What gives power to the fuel injectors?
The (PCM) uses the trigger signal from the crankshaft position sensor; and/or camshaft position sensor to pulse the injectors.