A new light on your dashboard? You don’t find out why it doesn’t switch off… It’s typical, an automobile is complicated and there are various motives why a light may come on. In cases where your glow plug light comes on while driving your Alfa Romeo 147, it may possibly signify some concerns. 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 Alfa Romeo 147 operates, and then the different explanations it lights up when you are driving

glow-plug-light-alfa-romeo-147

What is the purpose of my Alfa Romeo 147 glow plug light?

The primary intent of the engine glow plug light, which is in most cases represented by a yellow coil, is to guarantee that your glow plugs are working properly. In fact, it must light up when you switch on your Alfa Romeo 147 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 motor vehicle. Nevertheless, if it turns on while driving, it may indicate different issues, we will try to explain the most important ones.

What to do if the glow plug light comes on while driving on my Alfa Romeo 147?

A glow light that comes on while driving on your Alfa Romeo 147 or at any other time other than when the engine is started is intended to alert you to a fault other than your spark plugs, we will check out this now. In any case, a switch to the diagnostic tool will allow you to carefully understand the cause for the light up of your glow light.

My Alfa Romeo 147 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 Alfa Romeo 147 and that you also encounter a loss of power. In such a case, some concerns can explain its presence. Here is a list of the most important motives:

  • Trouble of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this case, it is rational that your preheat light comes on while driving on Alfa Romeo 147 because it is one of the failures of which it is supposed to alert you. Have the status of your valve checked
  • Issue related 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.
  • Issue associated with the injection, either an injector that has seized up or the injection pump that is malfunctioned by filings or other possible foreign bodies that disrupt its proper operation.
  • Finally, the last issue that could lead to a glow indicator light on your Alfa Romeo 147 coupled with a loss of power, is that your fuel filter is too dirty, you should experience 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 147

To conclude, we’ll give you the explanations for a glow plug light that comes on on your Alfa Romeo 147 without you feeling any difference in power or motor vehicle behaviour. In most cases, this is an electronic fault:

  • Glow plug relays or fuses to be swapped out, 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, check the other solutions first because it is not easy to find it alone, we encourage you to go to your technician.
  • Faulty injection pressure sensor, ECU error

    • If you have any additional questions about the Alfa Romeo 147, do not hesitate to consult our Alfa Romeo 147 category.