A new warning light on your dashboard? You don’t find out why it doesn’t turn off… It’s normal, a car is complicated and there are many motives why a light could occur. In the event that your glow plug light comes on while driving your Buick Envision, it might show different issues. On this page, we will do anything we can to support you see things more clearly. First, we will find out how the preheating light on your Buick Envision works, and then the different explanations it lights up when you are driving

glow-plug-light-buick-envision

What is the goal of my Buick Envision glow plug light?

The main purpose of the engine glow plug light, which is most of the time symbolized by a yellow coil, is to ensure that your glow plugs are working effectively. In fact, it must light up when you switch on your Buick Envision 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. But, if it turns on while driving, it may reveal different issues, we will try to describe the most important ones.

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

A glow light that comes on while driving on your Buick Envision 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 look at this right now. In any case, a switch to the diagnostic tool will allow you to precisely understand the motive for the light up of your glow light.

My Buick Envision glow light comes on and I’m having a loss of power

The first probability is that you identify that your glow plug light comes on while driving your Buick Envision and that you also experience a loss of power. In this instance, different trouble can demonstrate its lightning. Here is a list of the most important motives:

  • Problem of EGR valve, indeed, if you undergo a loss of power, it is possible that your EGR valve is clogged, in such a case, it is logical that your preheat light comes on while driving on Buick Envision because it is one of the failures of which it is expected to warn you. Have the status of your valve looked at
  • Trouble related 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 relevant 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 affect its proper performance.
  • Finally, the last issue that could lead to a glow indicator light on your Buick Envision coupled with a loss of power, is that your fuel filter is too dirty, you should get 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 Envision

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

  • 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 get rid of the issue.
  • You have a false contact somewhere in your electrical circuit, test the other alternatives 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 want more guides on the Buick Envision, go to our Buick Envision category.