A new light on your dashboard? You don’t find out why it doesn’t turn off… It’s normal, a vehicle is complicated and there are multiple causes why a light could occur. In cases where your glow plug light comes on while driving your Ford Ranger, it may point out some concerns. In this article, we will do everything we can to support you see things more clearly. First, we will discover how the preheating light on your Ford Ranger works, and then the different reasons it lights up when you are driving

glow-plug-light-ford-ranger

What is the goal of my Ford Ranger glow plug light?

The primary role of the engine glow plug light, which is most of the time symbolized by a yellow coil, is to guarantee that your glow plugs are working properly. In fact, it must light up when you switch on your Ford Ranger to tell you that they are heating the intake air in your cylinders and must go out after a few moments when the engine is running. This preheat light is therefore not meant to stay or come on while driving with your vehicle. Nevertheless, if it comes on while driving, it may indicate multiple issues, we will try to point out the most important ones.

What to do if the glow plug light comes on while driving on my Ford Ranger?

A glow light that comes on while driving on your Ford Ranger or at any other time other than when the engine is started is designed to warn you to a problem other than your spark plugs, we will look at this right now. In any case, plug in your car to the diagnostic tool will allow you to accurately translate the motive for the light up of your glow light.

My Ford Ranger glow light comes on and I’m encountering a loss of power

The first possibility is that you detect that your glow plug light comes on while driving your Ford Ranger and that you also knowledge a loss of power. In such a case, some complications can demonstrate its lightning. Here is a list of the most important causes:

  • Issue of EGR valve, indeed, if you are affected a loss of power, it is possible that your EGR valve is clogged, in this instance, it is expected that your preheat light comes on while driving on Ford Ranger because it is one of the problem of which it is expected to warn you. Have the status of your valve examined
  • Problem associated with the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can lead to turbo boost and a perturbation in the performance of the turbo.
  • Problem in connection with the injection, either an injector that has seized up or the injection pump that is malfunctioned by filings or other possible foreign bodies that disturb its proper function.
  • Finally, the last problem that could lead to a glow indicator light on your Ford Ranger coupled with a loss of power, is that your fuel filter is too dirty, you should get jerks because of a bad fuel flow in the engine.

My glow plug light comes on or is flashing but no difference on the performance of my Ford Ranger

To finish , we’ll give you the reasons for a glow plug light that comes on on your Ford Ranger without you feeling any difference in power or vehicle behaviour. In general, this is an electronic problem:

  • Glow plug relays or fuses to be swapped out, test and change if necessary.
  • A contactor/potentiometer on one of your pedals (brake, accelerator or clutch) has failed, often a simple de-seizure will be enough to fix the problem.
  • You have a false contact somewhere in your electrical circuit, test out the other alternatives first because it is not easy to find it alone, we advise you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error
  • If you wish more tutorials on the Ford Ranger, go to our Ford Ranger category.