A new warning light on your dashboard? You don’t understand why it doesn’t shut off… It’s normal, a vehicle is complicated and there are many motives why a light could occur. If it turns out your glow plug light comes on while driving your Chevrolet Sonic, it might point out several problems. 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 Chevrolet Sonic operates, and then the different explanations it lights up when you are driving

glow-plug-light-chevrolet-sonic

What is the goal of my Chevrolet Sonic glow plug light?

The main purpose of the engine glow plug light, which is in most cases represented by a yellow coil, is to ensure that your glow plugs are working properly. In reality, it must light up when you switch on your Chevrolet Sonic to tell you that they are heating the intake air in your cylinders and must go out after a few minutes when the engine is running. This preheat light is therefore not supposed to stay or come on while driving with your automobile. Nevertheless, if it comes on while driving, it may show multiple troubles, we will try to point out the main ones.

What to do if the glow plug light comes on while driving on my Chevrolet Sonic?

A glow light that comes on while driving on your Chevrolet Sonic or at any other time other than when the engine is started is designed to inform you to a fault other than your spark plugs, we will take a look at this right now. No matter the reason, plug in your car to the diagnostic tool will allow you to accurately understand the explanation for the light up of your glow light.

My Chevrolet Sonic glow light comes on and I’m having a loss of power

The first possibility is that you identify that your glow plug light comes on while driving your Chevrolet Sonic and that you also encounter a loss of power. In this instance, several concerns can demonstrate its presence. Here is a list of the main motives:

  • Problem of EGR valve, in fact, if you undergo a loss of power, it is possible that your EGR valve is clogged, in this instance, it is rational that your preheat light comes on while driving on Chevrolet Sonic because it is one of the issue of which it is meant to warn you. Have the status of your valve tested
  • Problem related to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can lead to turbo boost and a perturbation in the operation of the turbo.
  • Problem related 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 performance.
  • Finally, the last issue that could lead to a glow indicator light on your Chevrolet Sonic 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 Chevrolet Sonic

Finally, we’ll give you the explanations for a glow plug light that comes on on your Chevrolet Sonic without you feeling any difference in power or automobile behaviour. Generally, this is an electronic fault:

  • Glow plug relays or fuses to be replaced, 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 get rid of the issue.
  • You have a false contact somewhere in your electrical circuit, check the other options first because it is not easy to find it alone, we suggest you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • To get more tips on the Chevrolet Sonic, take a look at the Chevrolet Sonic category.