A new light on your dashboard? You don’t understand why it doesn’t switch off… It’s typical, a car is complex and there are various reasons why a light may come on. In the event that your glow plug light comes on while driving your Ford F 550, it might signify some concerns. In this post, we will do everything we can to help you see things more clearly. First, we will find out how the preheating light on your Ford F 550 functions, and then the different causes it lights up when you are driving

glow-plug-light-ford-f-550

What is the purpose of my Ford F 550 glow plug light?

The primary purpose of the engine glow plug light, which is in most cases represented by a yellow coil, is to make sure that your glow plugs are working correctly. In fact, it must light up when you switch on your Ford F 550 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 meant to stay or come on while driving with your automobile. However, if it turns on while driving, it may indicate different issues, we will try to summarize the main ones.

What to do if the glow plug light comes on while driving on my Ford F 550?

A glow light that comes on while driving on your Ford F 550 or at any other time other than when the engine is started is intended to warn you to a fault other than your spark plugs, we will check out this right now. No matter the reason, a switch to the diagnostic tool will allow you to precisely understand the explanation for the light up of your glow light.

My Ford F 550 glow light comes on and I’m having a loss of power

The first situation is that you identify that your glow plug light comes on while driving your Ford F 550 and that you also encounter a loss of power. In this case, some trouble can explain its lightning. Here is a list of the main reasons:

  • Issue 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 expected that your preheat light comes on while driving on Ford F 550 because it is one of the problem of which it is meant to notify you. Have the status of your valve examined
  • Problem linked to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can bring about turbo boost and a perturbation in the performance of the turbo.
  • Problem related to 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 problem that could lead to a glow indicator light on your Ford F 550 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 F 550

To finish , we’ll give you the causes for a glow plug light that comes on on your Ford F 550 without you feeling any difference in power or automobile behaviour. In general, this is an electronic fault:

  • Glow plug relays or fuses to be changed, 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 solve the problem.
  • You have a false contact somewhere in your electrical circuit, check the other options first because it is not easy to find it alone, we recommend you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error

    • If you want more tutorials on the Ford F 550, go to our Ford F 550 category.