Your Volvo XC90 often stalls when the engine is cold, but simply in that situation, and not in any way when the engine is hot, and you have trouble finding its origin? This situation, although less dangerous than an engine that stalls while driving, still needs your attention because it could be the beginning of a more serious problem in the future for your Volvo XC90.
In this article, we will inform you about the different problems you might face when your car stumble 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 solve the problem.

Different motives to stall for a cold engine.

First, we will explore failures related to mechanical problems. The second part will be devoted to electronic problems.

stalls-when-coldvolvo-xc90

1: Mechanical failures on your Volvo XC90

First thing to think about, the idle actuator. Remember, the latter’s role is to control the engine speed. It may be complex for the latter to connect to the engine while the engine is still cold.
Another simpler aspect, but also known in these cases, is that the battery is likely low, and therefore does not have many reserves until the engine has started. This denotes that after “heating” the engine, the battery has stored enough energy to keep your Volvo XC90 on. However, it has difficulty keeping up with autonomy once the engine is switched off. Which would explain 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.
Keep in mind that a simple, heavily dirty part can break up the entire mechanism of your Volvo XC90. Check 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 Volvo XC90

The first important parts are the onboard computer. the MCU (Motor Control Unit) acts as a system for exchanging and dispatching information throughout your vehicle. Electrical signals are received, processed and sent back as information to the several parts of your Volvo XC90.
For example, when you activate 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 taken here the example of the indicator, which would not stop you from driving. If this information was associated to the engine of your Volvo XC90, then in this case it may stall cold.
In addition, let us speak about the calculator. This essential part of your vehicle is a central element 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 problems 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 fire in the correct order and at a specific moment. If the TDC sensor is ruined, it will not send this information to the onboard computer. Therefore ,, as a safety measure, the ECU will stop the ignition system and your Volvo XC90 won’t start.

At last, you may want to verify your alternator.
It is necessary for the engine to start because it switches the battery on, and the engine producesthe electricity needed to keep the battery charged when you drive.
This means that ultimately you could have a battery problem. If your alternator does not provide enough electricity to your battery, it will, consequently, be incapable to keep your Volvo XC90 on.

3: Conclusion on your Volvo XC90 which stalls when cold

As we have come across in these various motives of cold stalling cars, this often leads back to the battery or directly matching parts. However, this may not be the only explanation, do all the required tests to analyze the right functioning of each part. At last, the last thing to think about with Volvo XC90 is to ask yourself this question: have you recently started refuelling at a new gas station? If so, it may be unintentionally degraded due to contact with water or impurities. This would affect your engine, which could start to stall quickly.
However, if this does not appear once your engine is hot, then the impurity of the fuel is exonarated. The problem would be recurrent 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.

Whenever you have any additional questions about the Volvo XC90, do not hesitate to consult our Volvo XC90 category.