As soon as you descend below a particular speed your car begins to slow down and sometimes even the engine stops for no apparent reason?
It seems obvious that this is abnormal. In this article we will try to give an answer so that you can see more clearly before perhaps going to the garage and get a steep bill to fix your Nissan Xterra.
However, if this happens while driving at rather high speeds, do not take any more unnecessary risks. Call a professional urgently. Imagine that this happens to you on the ring road or highway….
First thing to consider, and it may seem strange, but it has happened to some people before: Do you get fuel all the time at the same pump for your Nissan Xterra? If so, it could come from there. Try changing gas pumps, and observe what happens. This is improbable but it doesn’t cost much to try it. The fuel you get from here may contain dirt or impurities that harm your Nissan Xterra’s engine.
If nothing changes, let’s look at the more technical causes you are confronted with on your Nissan Xterra.


Electronic part of your Nissan Xterra :

The first element is the MCU (Motor Control Unit) box. You may want to know what this piece is. In a few words , it is a metal box made of a multitude of electronic elements whose role is to receive electrical signals, developing these data, and sending information to the various parts of your Nissan Xterra. It is a base to manage your car’s information.
As you have understood, if it were to fail to function properly, the consequences could be serious for your Nissan Xterra. A motor that stops can be a symptom.
Apart from that, look at the engine speed sensor side, or the onboard computer. It is a platform for exchanging calculations and is therefore essential to the engine.

Another potentially targeted box is the built-in systems interface, which centralizes all the information from the multiple sensors throughout your vehicle. It functions as a relay platform for all your calculators. It is equivalent in some ways to a computer motherboard. So you understand the importance of this on your Nissan Xterra.
As to sensors, also consider your TDC sensor.Its role is to send information to the calculators regarding the position of the pistons in order to determine the engine speed, which will then determine the fuel injection.
Last but not least, consider your alternator, which would no longer allow your Nissan Xterra to be powered. Same concern if it came from the ignition coil.
Finally, because this case is much rarer, it might occur that a wire or connection is harmed, and your computer could no longer perform properly.
So here’s for the electronic causes. Let’s now look at the mechanics on your Nissan Xterra.

Mechanical part of your Nissan Xterra :

First, only a clogged filter can disrupt the life of your engine. Bear in mind to clean it regularly. The injection pump, or also the pressure regulator, are also parts to be checked.
The idle actuator could also very well be involved .
Its role is to control the engine speed as part of the overall idle control of the engine management system. Thereforedirectly impacting the engine .
Another factor, more rare but also possible, is Neiman’s contactor. It is what allows to secure the steering wheel for safety when the ignition is turned off. It is related to the engine so a failure may well also have implications on the Nissan Xterra’s engine.

Here are the main causes, whether electronic or mechanical, that could result in your Nissan Xterra to slow down.
In a few words, first check the simplest things, dirty pieces, then identify about the electronic parts that may be involved.
If you were about to start repairing on your own, be really cautious on what you do, there is no substitute for the expertise of a professional.

To discover more tips on the Nissan Xterra, take a look at the Nissan Xterra category.