What does the MAP sensor do on a Duramax?

The manifold absolute pressure (MAP) sensor measures the pressure inside of the intake manifold, which corresponds to turbocharger boost pressure. This is one of many parameters used to determine fuel injection rates, thus a faulty MAP sensor can have a significant impact on performance and fuel economy.

Where is MAP sensor on Duramax diesel?

front air intake manifold tube
4. On the LBZ & LMM engine the MAP Sensor is located on the front air intake manifold tube on the front of the engine as shown in the picture to the right.

How often should MAP sensor be replaced?

Unlike a lot of the other parts in your car, you’re not going to have to worry about replacing your MAP sensor very often, if ever. Generally speaking, MAP sensors are designed to last for as long as you have your car. Most will eventually start to give out on you if you put more than 150,000 miles on your car.

How do you clean a MAP sensor?

Clean the outer surface of the MAP sensor using electric parts cleaner. Place the MAP sensor on a flat surface with the sensor facing upward. Spray a dry rag with electrical parts cleaner. Gently scrub the rest of the sensor with the rag, taking care not to scrub the sensor itself.

How do you clean a map sensor?

Is it OK to drive with a bad MAP sensor?

It is not advisable to drive your vehicle with the MAP (manifold absolute pressure) sensor disconnected. With the MAP sensor disconnected, the fuel delivery will be excessive and could cause harm to the engine and exhaust system (catalytic converters).

Is MAP sensor same as MAF sensor?

While a MAF sensor is always located before the throttle body, a MAP sensor can usually be found attached to the intake manifold. In a MAP sensor-only setup, however, it needs to be located after the throttle body (and usually inside the intake manifold) to be able to measure both vacuum and positive air pressures.