Modern automobiles are more and more pre-loaded with new technologies, apart from the comfort of use it can bring, technology as well has the advantage of saving fuel or reducing the pollution released by our automobiles. This is exactly the subject of our article content of the day, we are going to look at the problems of the lambda sensor on GMC Yukon XL , this sensor as well known as oxygen sensor plays an necessary role. To find out, first, we are going to identify what a lambda probe is used for, then, what are the lambda sensor problems on GMC Yukon XL and how to fix them.
What is a lambda role on GMC Yukon XL?
So we start our article with the benefit of a lambda sensor on GMC Yukon XL , we will first see what is the task of this probe and then how it functions.
Role of a lambda sensor on GMC Yukon XL
First produced by Volvo in the 1970s, it began to appear on our cars in the 1990s with the first EURO 1 emission requirements. As well called oxygen sensor on GMC Yukon XL , its task is to control the amount of oxygen in the exhaust gases, this will enable the engine unit to change the air/fuel mixture to reduce the pollution released by the motor vehicle and reduce the car’s fuel consumption.
Lambda sensor operation on GMC Yukon XL
Before describing you the different problems of lambda probe on GMC Yukon XL , we will look a little more in outline at its functioning to allow you to understand exactly how it functions and thus to consider more serenely the correction of a problem associated with it.
As we informed you, a lambda probe has the task of managing the amount of oxygen present in the exhaust gases . One could naively presume that this data is determined upstream of the combustion but it is on the contrary measured at the engine outlet . With the EURO 1 standard there was only one lambda sensor required before the catalyst, but with the arrival of more drastic requirements there are now 2 lambda sensors, one before and one after the catalyst . The benefit is to have more precise data by compiling the two probes. These data are sent to the ECU which will modify the quantity of air and gasoline inserted into the engine unit to improve the combustion .
Lambda sensor problem on GMC Yukon XL
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At last, we are now going to attack the section you are absolutely most enthusiastic about this article, how to proceed if you have a lambda sensor problem on GMC Yukon XL . In a first step we will find out how to find a lambda sensor HS and in a second step how to change it.
How to know if a lambda sensor on GMC Yukon XL is HS
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It is necessary to know that a lambda sensor has generally speaking a lifetime of 150 000 km , this data can differ according to the year of your GMC Yukon XL, your driving, and the good performance of your engine unit. A poorly maintained engine unit that releases unburned gases may forever alter your lambda sensor. One of the clues that can alert you of a defective lambda sensor on GMC Yukon XL may be the engine unit light comes on, if you want to turn off the engine light of your GMC Yukon XL, do not hesitate to consult our dedicated article to see the procedure to follow. The only effective technique to be sure that you have a lambda sensor problem on your GMC Yukon XL and to pass your car to the diagnostic case, for that do not hesitate to seek advice from our guide which explains you GMC Yukon XLhow to read the fault code of a GMC Yukon XL. Take note that if you have problems with one of your lambda sensors, the only remedy to solve them will be to change the defective sensor.
How to change a lambda sensor on GMC Yukon XL?
And finally, we are going to focus on the correction of lambda sensor problems on GMC Yukon XL , by describing how to replace a lambda sensor.
The replacement of a lambda sensor is quite basic to carry out and you will be able to do it yourself with a minimum of tools and mechanical expertise. A lambda sensor is worth between 25 and 50€ , it is better to change the 2 lambda sensors present upstream and downstream of your catalytic converter because if one of them is defective the second one risks to drop you quickly. To replace it, it will be required to put your GMC Yukon XL on candles and at the level of your catalyst unscrew your probes, disconnect them, reconnect them and screw the new ones . Once re-connected, you should not have any more problems with your lambda sensor on GMC Yukon XL.
To find more tips on the GMC Yukon XL, take a look at the GMC Yukon XL category.
