A new light on your dashboard? You don’t understand why it doesn’t turn off… It’s typical, a car is complex and there are various causes why a light might occur. In cases where your glow plug light comes on while driving your Chevrolet Impala, it might show some concerns. On this page, we will do anything we can to support you see things more clearly. First, we will discover how the preheating light on your Chevrolet Impala functions, and then the different motives it lights up when you are driving

glow-plug-light-chevrolet-impala

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

The primary role of the engine glow plug light, which is generally represented by a yellow coil, is to guarantee that your glow plugs are working effectively. Indeed, it must light up when you switch on your Chevrolet Impala 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 issues, we will try to detail the main ones.

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

A glow light that comes on while driving on your Chevrolet Impala or at any other time other than when the engine is started is designed to warn you to a fault other than your spark plugs, we will check out this now. No matter the reason, plug in your car to the diagnostic tool will allow you to properly understand the reason for the light up of your glow light.

My Chevrolet Impala glow light comes on and I’m experiencing a loss of power

The first situation is that you identify that your glow plug light comes on while driving your Chevrolet Impala and that you also knowledge a loss of power. In such a case, some trouble can describe its lightning. Here is a list of the main causes:

  • Trouble of EGR valve, in fact, if you are affected a loss of power, it is possible that your EGR valve is blocked, in this instance, it is obvious that your preheat light comes on while driving on Chevrolet Impala because it is one of the failures of which it is designed to warn you. Have the status of your valve checked out
  • Problem linked 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 operation of the turbo.
  • Problem linked 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 function.
  • Finally, the last trouble that could lead to a glow indicator light on your Chevrolet Impala 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 Chevrolet Impala

Finally, we’ll give you the motives for a glow plug light that comes on on your Chevrolet Impala without you feeling any difference in power or car behaviour. In most cases, this is an electronic fault:

  • 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 trouble.
  • You have a false contact somewhere in your electrical circuit, test the other solutions first because it is not easy to find it alone, we advise you to go to your repair shop.
  • Faulty injection pressure sensor, ECU error

    • If you wish more guides on the Chevrolet Impala, go to our Chevrolet Impala category.