You have found yourself repeatedly stalling with your Ford Fusion when you try to start the car and you don’t know why. Even if your car starts after several tests, it is important to look into the problem so as to solve the breakdown as soon as possible, in order to avoid a more serious problem.
The idea of this article is to assist you to you see things more visibly and try to understand what might cause trouble. We will focus on the various likely breakdowns you may encounter so that you can solve them easily and avoid more problems on your Ford Fusion.


Reasons for stalling at start-up

We will structure this article into two separate paragraphs, one dealing with mechanical causes, and the other with electronic causes.

1: Mechanical origins on your Ford Fusion that makes you stall

In this section, we will see the different parts that might lead to you to stall at start-up if they are weakened.
The idle actuator: The role of the idle actuator is to regulate the air in the engine when it is idling so that it does not choke or stall. If you ever think that your engine is slightly browsing before stalling, it is very certain that the idle actuator is involved.
Battery: If your car starts normally and then stalls a little later, it’s nothing to do with the battery. It will be concerned if your Ford Fusion starts to stall immediately after switching it on.
In that case, verify the battery carefully.
Also, simply look at your dashboard to get information thanks to the the lights that may be on.
Also, keep in mind to manually check the cleanliness of the parts of your Ford Fusion. Indeed, a thorough cleaning of the parts (filters, injection pump, pressure regulator) could help you out of situations that would have seemed much more delicate, and avoid your Ford Fusion to stall. This is often the cause of other various breakdowns.

2: Electronic origins on your Ford Fusion

We will see here the potential electronic failures that could cause you problems, but in general the causes are very frequently, as we have mentioned, of mechanical origin.
BSM box: This is the information exchange platform of your Ford Fusion. It is improbable that this is the case because ithe BSM box is rather reliable. The majority of breakdowns related to this box are cars that stall while driving.
BSI box: The BSI box allows to centralize the information and to translate all these different languages for the global management of the vehicle functions. This could be the motive not if your Ford Fusion stalls at start up, but if your Ford Fusion does not start at all.
Calculator: This is the central element of a system called an “embedded system”. The main function of an ECU is to deliver the right “weight” of fuel with each engine piston stroke. Several embedded systems electronically manage the various functions of the vehicle. There are between 30 and 80 on each car! Be careful with this part as some professionals tend to blame this part because they are incapable to find the genuine failure. One defective sensor on your Ford Fusion would be enough to put the blame on the ECU . Request the advice of a second professional if you are ever asked to replace this part because it is expensive and not necessarily the cause for a Ford Fusion to stall at start-up.

TDC sensor: Its role is to determine the speed at which your Ford Fusion is operating so that the fuel is sent correctly. It could be in poor condition, or simply dirty. Check its condition in order to draw conclusions and discover if this is the reason for your Ford Fusion to stall at start-up.
Alternator: Logically, this one should be out of the question, because thanks to it the battery starts the car. However, it may be slightly damaged and the alternator may not be able to recharge the battery, which does not supply the car. It therefore manages to light up but goes out just as quickly.

3: Conclusion on your Ford Fusion

So here are the different parts that could affect your Ford Fusion and make it stall at start-up. What you have to keep in mind is that it is important to make sure that the parts are right and clean on your Ford Fusion. Then, do extensive research on each part if necessary to really understand their usefulness and diagnosis. Do not hesitate to call on the advice of several professionals so that you do not rely on just one person.

If you want more guides on the Ford Fusion, go to our Ford Fusion category.