A new light on your dashboard? You don’t find out why it doesn’t shut off… It’s normal, an automobile is elaborate and there are multiple factors why a light might come on. In cases where your glow plug light comes on while driving your Fiat Punto, it might reveal some things. On this page, we will do anything we can to help you see things more clearly. First, we will find out how the preheating light on your Fiat Punto operates, and then the different explanations it lights up when you are driving

glow-plug-light-fiat-punto

What is the goal of my Fiat Punto glow plug light?

The main goal of the engine glow plug light, which is generally represented by a yellow coil, is to ensure that your glow plugs are working correctly. In reality, it must light up when you switch on your Fiat Punto 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 vehicle. However, if it comes on while driving, it may suggest multiple issues, we will try to explain the main ones.

What to do if the glow plug light comes on while driving on my Fiat Punto?

A glow light that comes on while driving on your Fiat Punto or at any other time other than when the engine is started is intended to warn you to a problem other than your spark plugs, we will look at this now. Whatever the case, plug in your car to the diagnostic tool will allow you to properly translate the motive for the light up of your glow light.

My Fiat Punto glow light comes on and I’m experiencing a loss of power

The first situation is that you recognize that your glow plug light comes on while driving your Fiat Punto and that you also knowledge a loss of power. In this case, some trouble can describe its lightning. Here is a list of the main factors:

  • Issue of EGR valve, indeed, if you go through 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 Fiat Punto because it is one of the failures of which it is expected to warn you. Have the status of your valve checked
  • Problem 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 performance of the turbo.
  • Problem related to the injection, either an injector that has seized up or the injection pump that is destroyed by filings or other possible foreign bodies that disrupt its proper performance.
  • Finally, the last problem that could lead to a glow indicator light on your Fiat Punto 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 Fiat Punto

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

  • 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, test out the other solutions first because it is not easy to find it alone, we encourage you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • If you need more tutorials on the Fiat Punto, go to our Fiat Punto category.