A new warning light on your dashboard? You don’t find out why it doesn’t turn off… It’s normal, an automobile is complex and there are various reasons why a light might occur. If your glow plug light comes on while driving your Jeep Gladiator, it may signal different things. In this article, we will do everything we can to support you see things more clearly. First, we will see how the preheating light on your Jeep Gladiator operates, and then the different explanations it lights up when you are driving

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What is the purpose of my Jeep Gladiator glow plug light?

The main goal of the engine glow plug light, which is most of the time represented by a yellow coil, is to guarantee that your glow plugs are working properly. In reality, it must light up when you switch on your Jeep Gladiator 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 expected to stay or come on while driving with your automobile. Nevertheless, if it turns on while driving, it may indicate several failures, we will try to detail the most important ones.

What to do if the glow plug light comes on while driving on my Jeep Gladiator?

A glow light that comes on while driving on your Jeep Gladiator or at any other time other than when the engine is started is designed to warn you to a fault other than your spark plugs, we will take a look at this now. No matter the reason, connecting your vehicle to the diagnostic tool will allow you to carefully interpret the cause for the light up of your glow light.

My Jeep Gladiator glow light comes on and I’m suffering from a loss of power

The first possibility is that you perceive that your glow plug light comes on while driving your Jeep Gladiator and that you also experience a loss of power. In this instance, different trouble can demonstrate its presence. Here is a list of the most important reasons:

  • Issue of EGR valve, indeed, if you undergo a loss of power, it is possible that your EGR valve is blocked, in this instance, it is rational that your preheat light comes on while driving on Jeep Gladiator because it is one of the issue of which it is expected to alert you. Have the status of your valve checked
  • Problem linked to 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 disturbance in the performance of the turbo.
  • Problem relevant 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 affect its proper functioning.
  • Finally, the last issue that could lead to a glow indicator light on your Jeep Gladiator 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 Jeep Gladiator

Finally, we’ll give you the explanations for a glow plug light that comes on on your Jeep Gladiator without you feeling any difference in power or automobile behaviour. Ordinarily, 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 solve the issue.
  • You have a false contact somewhere in your electrical circuit, test the other solutions 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 you wish more guides on the Jeep Gladiator, go to our Jeep Gladiator category.