A new light on your dashboard? You don’t figure out why it doesn’t switch off… It’s normal, an automobile is complicated and there are multiple causes why a light might occur. In cases where your glow plug light comes on while driving your Ford Explorer, it may possibly reveal some issues. In this article, we will do anything we can to support you see things more clearly. First, we will discover how the preheating light on your Ford Explorer operates, and then the different causes it lights up when you are driving


What is the purpose of my Ford Explorer glow plug light?

The primary intent of the engine glow plug light, which is in most cases represented by a yellow coil, is to guarantee that your glow plugs are working properly. Indeed, it must light up when you switch on your Ford Explorer to tell you that they are heating the intake air in your cylinders and must go out after a few minutes when the engine is running. This preheat light is therefore not supposed to stay or come on while driving with your motor vehicle. But, if it turns on while driving, it may show several troubles, we will try to point out the main ones.

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

A glow light that comes on while driving on your Ford Explorer or at any other time other than when the engine is started is intended to inform you to a fault other than your spark plugs, we will take a look at this right now. No matter the reason, connecting your vehicle to the diagnostic tool will allow you to properly understand the cause for the light up of your glow light.

My Ford Explorer glow light comes on and I’m suffering from a loss of power

The first probability is that you perceive that your glow plug light comes on while driving your Ford Explorer and that you also experience a loss of power. In this instance, some problems can demonstrate its presence. Here is a list of the main causes:

  • Problem of EGR valve, indeed, if you undergo a loss of power, it is possible that your EGR valve is blocked, in this case, it is obvious that your preheat light comes on while driving on Ford Explorer because it is one of the issue of which it is supposed to warn you. Have the status of your valve checked
  • Problem associated with the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can result in 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 broken by filings or other possible foreign bodies that disturb its proper performing.
  • Finally, the last issue that could lead to a glow indicator light on your Ford Explorer coupled with a loss of power, is that your fuel filter is too dirty, you should feel 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 Explorer

To conclude, we’ll give you the causes for a glow plug light that comes on on your Ford Explorer without you feeling any difference in power or motor vehicle behaviour. In most cases, this is an electronic fault:

  • Glow plug relays or fuses to be changed, test and replace 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 resolve the issue.
  • You have a false contact somewhere in your electrical circuit, test the other alternatives first because it is not easy to find it alone, we recommend you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error
  • If perhaps you have any further questions about the Ford Explorer, do not hesitate to consult our Ford Explorer category.