Why do I need a Noid light on my fuel injector?
The fuel injector Noid light test is done in conjunction with several other tests to find the root cause of the misfire or No Start your vehicle is experiencing. All fuel injectors need power and a switching signal from the fuel injection computer.
What to do if your fuel injector is not working?
Replace the fuel injector if its not working. Connect a test light to the negative terminal of the vehicle’s battery, then press the probe into the wire leading into each fuel injector. If the test light comes on, power is flowing to each injector.
Why does the fuel injector light not flash?
The noid light does not flash at all when cranking the engine over; check for fuel injector pulse at multiple cylinders as you may just have an issue with that specific circuit. If there is no pulse on all cylinders; check to see if the fuel injector is getting power with the key on and cranking.
Why is the Noid light not flashing on and off?
If the Noid light DID NOT flash on and off; this result indicates the the fuel injector is either NOT getting power or that the fuel injection computer is NOT providing a fuel injector pulse signal to activate it. With this result; you have confirmed that the electrical part of the fuel injector circuit is at fault.
The noid light does not flash at all when cranking the engine over; check for fuel injector pulse at multiple cylinders as you may just have an issue with that specific circuit. If there is no pulse on all cylinders; check to see if the fuel injector is getting power with the key on and cranking.
Why is there no pulse on fuel injector?
If still no injector pulse, then the computer is not pulsing the injectors open for some reason and more testing will be needed. 4) Again, you want the Noid light to blink consistently when cranking the engine over. This is a good signal.
What does the Noid light on a fuel injector mean?
If it was, this result indicates that the fuel injector is getting power. Also, that the fuel injection computer is providing a fuel injector pulse signal to activate it. As a result, these test results eliminate the electrical end of the fuel injector circuit; as the cause of the problem or misfire.
How can you tell if a fuel injector is bad?
You will be able to see if a certain fuel injector is getting a signal to fire. So, all fuel injectors need power and a switching signal, from the fuel injection computer. This tool helps you to visually confirm that the fuel injector is getting both. A fuel injector noid light test, will not tell you that the fuel injector is bad.