A new warning light on your dashboard? You don’t understand why it doesn’t shut off… It’s normal, an auto is elaborate and there are various factors why a light could occur. In cases where your glow plug light comes on while driving your Jeep Wrangler, it may signify several problems. In this article, we will do everything we can to support you see things more clearly. First, we will find out how the preheating light on your Jeep Wrangler functions, and then the different causes it lights up when you are driving

glow-plug-light-jeep-wrangler

What is the goal of my Jeep Wrangler glow plug light?

The main intent of the engine glow plug light, which is in most cases symbolized by a yellow coil, is to ensure that your glow plugs are working effectively. In fact, it must light up when you switch on your Jeep Wrangler 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 expected to stay or come on while driving with your car. Nevertheless, if it turns on while driving, it may suggest multiple failures, we will try to explain the main ones.

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

A glow light that comes on while driving on your Jeep Wrangler 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 check out this right now. Whatever the case, a switch to the diagnostic tool will allow you to accurately interpret the motive for the light up of your glow light.

My Jeep Wrangler glow light comes on and I’m experiencing a loss of power

The first situation is that you notice that your glow plug light comes on while driving your Jeep Wrangler and that you also knowledge a loss of power. In such a case, several concerns can describe its lightning. Here is a list of the main factors:

  • Trouble of EGR valve, in reality, if you go through a loss of power, it is possible that your EGR valve is blocked, in such a case, it is rational that your preheat light comes on while driving on Jeep Wrangler because it is one of the issue of which it is designed to notify you. Have the status of your valve looked at
  • 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 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 problem that could lead to a glow indicator light on your Jeep Wrangler 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 Jeep Wrangler

To finish , we’ll give you the causes for a glow plug light that comes on on your Jeep Wrangler without you feeling any difference in power or car behaviour. Ordinarily, this is an electronic fault:

  • Glow plug relays or fuses to be replaced, 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 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 suggest you to go to your technician.
  • Faulty injection pressure sensor, ECU error
  • To find more tips on the Jeep Wrangler, take a look at the Jeep Wrangler category.