A new warning light on your dashboard? You don’t find out why it doesn’t turn off… It’s typical, a vehicle is complicated and there are various reasons why a light may come on. In the event that your glow plug light comes on while driving your Alfa Romeo Giulia, it might show several things. 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 Alfa Romeo Giulia functions, and then the different reasons it lights up when you are driving


What is the goal of my Alfa Romeo Giulia glow plug light?

The primary role of the engine glow plug light, which is generally represented by a yellow coil, is to assure that your glow plugs are working effectively. In reality, it must light up when you switch on your Alfa Romeo Giulia 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 motor vehicle. However, if it comes on while driving, it may suggest several failures, we will try to detail the main ones.

What to do if the glow plug light comes on while driving on my Alfa Romeo Giulia?

A glow light that comes on while driving on your Alfa Romeo Giulia or at any other time other than when the engine is started is meant to alert you to a problem other than your spark plugs, we will check out this now. In any case, connecting your vehicle to the diagnostic tool will allow you to accurately understand the motive for the light up of your glow light.

My Alfa Romeo Giulia glow light comes on and I’m going through a loss of power

The first possibility is that you recognize that your glow plug light comes on while driving your Alfa Romeo Giulia and that you also knowledge a loss of power. In this case, several concerns can explain its lightning. Here is a list of the main reasons:

  • Problem of EGR valve, in fact, if you are affected a loss of power, it is possible that your EGR valve is clogged, in this instance, it is obvious that your preheat light comes on while driving on Alfa Romeo Giulia because it is one of the failures of which it is intended to alert you. Have the status of your valve looked at
  • Issue linked to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can result in turbo boost and a perturbation in the operation of the turbo.
  • Issue in connection with the injection, either an injector that has seized up or the injection pump that is destroyed 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 Alfa Romeo Giulia 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 Alfa Romeo Giulia

To conclude, we’ll give you the reasons for a glow plug light that comes on on your Alfa Romeo Giulia without you feeling any difference in power or motor vehicle behaviour. Generally, this is an electronic problem:

  • Glow plug relays or fuses to be swapped out, 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 alternatives first because it is not easy to find it alone, we encourage you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error
  • To find more tips on the Alfa Romeo Giulia, take a look at the Alfa Romeo Giulia category.