Air is the single most vital element for a running engine, even more so than fuel or oil. Without a flow of fresh, clean air, combustion cannot occur, and your engine cannot work. However, simply ensuring that airflow can reach the intake is not sufficient. The car’s computer needs to know a lot of information about the temperature and quality of air entering the intake. The manifold temperature sensor is in control for determining the temperature of the air, and providing that information to the computer.
The computer will determine the density of the air and adjust the fuel flow to meet that. Depending on the make and model you drive, your car may have more than one manifold temp sensor. For example, if you have a split manifold, you’ll have a sensor for each part. Like all other sensors on your car, the manifold temp sensor is subject to high heat and wear and tear. Electrical problems such as shorts and broken wires augment the list of potential troubles.
Facts to Note:
The manifold temp sensor is not part of any maintenance inspection.
The sensor can fail due to damage to the sensor or the wiring harness.
A failed sensor will activate your Check Engine light.
How to Fix:
The air cleaner is detached for access
The defective manifold temperature sensor is removed
The new manifold temperature is fitted and joined
The air cleaner assembly is reinstalled
The vehicle is started and checked for coolant leaks and sensor operation
Your manifold temp sensor is subject to considerable temperature extremes and will eventually fail. Without this part and the information it provides, the computer cannot determine the density of air entering the intake, resulting in an imbalanced air/fuel mixture. This results in rich or lean operation; both circumstances will damage the engine. If you suspect a problem with the manifold temperature sensor or experience the symptoms, have one of our expert mechanics diagnose the sensor.
Common symptoms indicating you may need to change the Manifold Temperature Sensor:
Check Engine light is on
Intermittent engine operation due to incorrect air/fuel ratio
Importance of this service:
Having an operational manifold temp sensor is critical for vehicle operation. If your Check Engine light is on, or you experience fuel or acceleration related problems, this may be the cause. Because many other problems display similar signs, it is essential to work with your expert mechanics to diagnose the actual issue and make the necessary maintenance.