Mechanics is a rather Cartesian profession. But if there is indeed a phenomenon that is sometimes difficult to explain, it is an unstable idle or acceleration holes. Whether for a Toyota Mirai, or any other car model. But we are here to help you. Undeniably, the cause can come from a good quantity of components of the engine block, or even electronic. To find the source of the breakdown in your Toyota Mirai, you need to follow a fairly simple method. But before, we will see the symptoms of a slowed down idle.idle-problem-Toyota-Mirai

Idling problem on a Toyota Mirai: symptoms

Un unstable idle close to stall . It is undoubtedly the most frequent malfunction in slow motion. This impression that the engine may stall while driving at normal speed, or that the Toyota Mirai grazes . It even happens that the vehicle stalls. Therefore, it is really dangerous for the motorist. In this case, don't wait too long to worry about it. We invite you to make your own diagnosis through the paragraph below. We can also understand that the Toyota Mirai has a acceleration malfunction . In this case, there is no longer any link with low-speed dysfunction. Losses of power and acceleration holes may appear for many reasons. We must avoid confusing these two different concerns. We invite you to read our posts related to power losses.

Toyota Mirai: developing a diagnostic to understand the origin of idling

We have to start by performing a number of relatively easy checks, before going into more detail.

Idling of the Toyota Mirai: exhaust fumes.

A black smoke escapes from the exhaust. This generally means that the air and fuel mixture is bad. Or that the air filter is clogged. In both situations, an idle malfunction may appear on the Toyota Mirai. A White smoke escapes from the exhaust. This time also it can come from a disturbance. White smoke is usually water vapor. It is therefore possible that it is a malfunction of the intake or of the cylinder head gasket.

Checking the engine block components

As we have seen, an idle malfunction on the Toyota Mirai can come from many components. You will therefore have to take the time to carefully scan the engine block. On the other hand, it remains suggested to be very careful and not to touch too much the components of the engine block, because that could aggravate the problem or divert the origin of the dysfunction. We obviously advise you to go to a mechanic for a more in-depth audit. These are therefore point by point the elements to be examined.

  • The first thing to do is check all of the hoses . These can be drilled, or even detached.
  • We will also have to check the sensors and sensors of your engine block. It is however complicated to check their correct operation. You can find tutorials on youtube, and it usually requires electronic devices.
  • Perform a control of pressures hydraulic. Again, the pressure tests require suitable equipment.

Idle worries are common nonetheless are hard to diagnose. A visual check on the Toyota Mirai gives the opportunity to have a clearer vision, however it is better not to venture into DIY enthusiasts.