A new light on your dashboard? You don’t find out why it doesn’t switch off… It’s typical, an auto is complicated and there are many causes why a light may come on. If it turns out your glow plug light comes on while driving your Buick LaCrosse, it might suggest some problems. In this article, we will do everything we can to help you see things more clearly. First, we will find out how the preheating light on your Buick LaCrosse works, and then the different reasons it lights up when you are driving

glow-plug-light-buick-lacrosse

What is the role of my Buick LaCrosse glow plug light?

The main role of the engine glow plug light, which is in most cases symbolized by a yellow coil, is to make sure that your glow plugs are working effectively. In reality, it must light up when you switch on your Buick LaCrosse 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 expected to stay or come on while driving with your motor vehicle. Nevertheless, if it comes on while driving, it may reveal different troubles, we will try to describe the main ones.

What to do if the glow plug light comes on while driving on my Buick LaCrosse?

A glow light that comes on while driving on your Buick LaCrosse or at any other time other than when the engine is started is intended to alert you to a problem other than your spark plugs, we will take a look at this right now. Whatever the case, a switch to the diagnostic tool will allow you to carefully interpret the motive for the light up of your glow light.

My Buick LaCrosse glow light comes on and I’m encountering a loss of power

The first possibility is that you notice that your glow plug light comes on while driving your Buick LaCrosse and that you also knowledge a loss of power. In such a case, some trouble can explain its presence. Here is a list of the main causes:

  • Problem of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this instance, it is rational that your preheat light comes on while driving on Buick LaCrosse because it is one of the issue of which it is supposed to notify you. Have the status of your valve tested
  • Trouble linked to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can bring about turbo boost and a perturbation in the operation of the turbo.
  • Trouble associated 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 disturb its proper performing.
  • Finally, the last trouble that could lead to a glow indicator light on your Buick LaCrosse coupled with a loss of power, is that your fuel filter is too dirty, you should come to 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 Buick LaCrosse

To conclude, we’ll give you the reasons for a glow plug light that comes on on your Buick LaCrosse without you feeling any difference in power or motor vehicle behaviour. Ordinarily, 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 fix the trouble.
  • You have a false contact somewhere in your electrical circuit, test out the other alternatives first because it is not easy to find it alone, we encourage you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error

    • In the event that you have any further questions about the Buick LaCrosse, do not hesitate to consult our Buick LaCrosse category.