“Only the finest ingredients…” reads the packaging for the authentic Italian marinara sauce. Any decent chef knows that it’s all about the way the ingredients come together that truly shapes the desired end result – a great taste. Well, the same can be said for the mixture of oxygen and gasoline that your engine burns.

This combination must be “just right” in order for the engine to run efficiently while producing as few emissions as possible. Your Volvo 740 oxygen sensor is the chef of your car’s exhaust system.

As exhaust gases make their way out of the exhaust pipe, the oxygen sensor analyzes and records this data. It then sends this information to the engine’s computer, and the computer analyzes the received data and subsequently adjusts the mixture by allowing for more oxygen or for more fuel, depending on the results. The Volvo 740 oxygen sensor detects whether this mixture is delicately balanced, or instead is too rich, or conversely, too lean. Both of these levels are harmful, but in different ways. When the mixture is too rich it means that there is too much fuel present in the mix, and this unburned fuel causes more pollution. If the mixture is too lean it means that there is too much oxygen present in the mix, causing excess nitrogen-oxide pollution, as well as adversely affecting engine performance and even damage. When things so delicately “hang in the balance,” it’s vital to know exactly what’s going on, and a properly functioning Volvo 740 oxygen sensor is key in getting that done.We have the oxygen sensor your car needs, as well as a host of other valuable parts for your Volvo.