Your Ford Focus frequently stalls when the engine is cold, but simply in that situation, and not by any means when the engine is hot, and you have trouble finding its origin? This issue, although less risky than an engine that stalls while driving, nonetheless needs your attention because it could be the start of a more dangerous problem in the future.
In this article, we will tell you about the various problems you might deal with when your car stagger in cold start so that you can react more efficently and not necessarily go to the garage, which often charges a high price for the service and does not always get rid of the problem.

Different reasons to stall for a cold engine.

First, we will discuss failures associated with mechanical problems. The second part will be focused to electronic problems.Stalls-when-cold-ford-focus

1: Mechanical failures on your Ford Focus

First thing to think about, the idle actuator. Once again, the latter’s role is to control the engine speed. It may be complex for the latter to connect to the engine though the engine is still cold.
Another simpler aspect, but also common in these cases, is that the battery is probably low, and therefore does not have many reserves till the engine has started. This means that after “heating” the engine, the battery has accumulated enough energy to keep your Ford Focus on. Even so, it has difficulty preserving autonomy once the engine is switched off. Which would make clear why it only chockes cold.
Also remember to check your dashboard, and if, by any chance, an indicator light is not lit.
Then again, if your car always starts the first time, it is very certain that it does not come from your battery.
If the battery is not concerned, look at some of the parts to be cleaned, such as filters, injection pump, or pressure regulator.
Take into account that a simple, heavily dirty part can affect the entire mechanism of your Ford Focus. Verify all your parts to be able to leave out this type of failure.
Once mechanical breakdowns and fouling have been put aside, let’s try to look for electronic parts that could cause you problems.

2: Electronic failures of your Ford Focus

The first essential parts are the onboard computer. the MCU (Motor Control Unit) acts as a system for exchanging and sending information throughout your vehicle. Electrical signals are received, analysed and sent back as information to the various parts of your Ford Focus.
For example, when you turn on your indicator, your MCU box receives the information, processes it, and then redirects it to your flashing room, which will then light up. We have used here the example of the indicator, which would not prevent you from driving. If this information was associated to the engine of your Ford Focus, then in this case it may stall cold.
What’s more, let us talk about the calculator. This vital part of your vehicle is a central component of a system called an embedded system. This means that it electronically manages the various functions of your vehicle, and therefore the ignition of the engine.
Find out more about this part if you have any questions about it.

Directly linked to your computer, the TDC sensor.

Indeed ,the internal combustion motor must have a precise ignition timing setting to be able for all the cylinders to start in the correct order and at a specific moment. If the TDC sensor is broken, it will not send this information to the onboard computer. As a result, as a safety measure, the ECU will stop the ignition system and your Ford Focus won’t start.

At last, you might want to verify your alternator.
It is necessary for the engine to start because it switches the battery on, and the engine producesthe electricity required to keep the battery charged while you drive.
This means that indirectly you could have a battery problem. If your alternator does not provide enough electricity to your battery, it will, therefore, be unable to keep your Ford Focus on.

3: Conclusion

As we have seen in these various motives of cold stalling cars, this often leads back to the battery or directly related parts. However, this could not be the only explanation, do all the necessary tests to analyze the appropriate functioning of each part. At last, the last thing to think about with Ford Focus is to ask yourself this question: have you fairly recently started refuelling at a new gas station? In this case, it may be inadvertently degraded due to contact with water or impurities. This would impact your engine, which could start to stall quickly.
However, if this does not appear immediately after your engine is hot, then the impurity of the fuel is exonarated. The problem would be repeated no matter if your engine is hot or cold.

Hoping to have been able to enlighten you about the various potential failures, do not give up in your research if you have not yet found.

If you need more guides on the Ford Focus, go to our Ford Focus category.