A new light on your dashboard? You don’t figure out why it doesn’t shut off… It’s normal, a vehicle is elaborate and there are multiple causes why a light may come on. In the event that your glow plug light comes on while driving your Jeep Cherokee, it may possibly reveal several concerns. In this post, we will do everything we can to help you see things more clearly. First, we will see how the preheating light on your Jeep Cherokee operates, and then the different explanations it lights up when you are driving

glow-plug-light-jeep-cherokee

What is the purpose of my Jeep Cherokee 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 ensure that your glow plugs are working effectively. Indeed, it must light up when you switch on your Jeep Cherokee 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 automobile. But, if it turns on while driving, it may reveal several troubles, we will try to describe the main ones.

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

A glow light that comes on while driving on your Jeep Cherokee or at any other time other than when the engine is started is designed to alert you to a fault other than your spark plugs, we will look at this right now. No matter the reason, plug in your car to the diagnostic tool will allow you to precisely translate the cause for the light up of your glow light.

My Jeep Cherokee 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 Jeep Cherokee and that you also knowledge a loss of power. In this instance, several trouble can explain its presence. Here is a list of the main causes:

  • Issue of EGR valve, in fact, if you undergo a loss of power, it is possible that your EGR valve is blocked, in such a case, it is obvious that your preheat light comes on while driving on Jeep Cherokee because it is one of the failures of which it is intended to notify you. Have the status of your valve inspected
  • Problem related to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can bring about turbo boost and a disturbance in the operation of the turbo.
  • Problem relevant to the injection, either an injector that has seized up or the injection pump that is damaged by filings or other possible foreign bodies that disturb its proper functioning.
  • Finally, the last problem that could lead to a glow indicator light on your Jeep Cherokee coupled with a loss of power, is that your fuel filter is too dirty, you should come to 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 Cherokee

Finally, we’ll give you the explanations for a glow plug light that comes on on your Jeep Cherokee 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 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 resolve the problem.
  • You have a false contact somewhere in your electrical circuit, check the other solutions first because it is not easy to find it alone, we recommend you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error
  • To get more tips on the Jeep Cherokee, take a look at the Jeep Cherokee category.