If a MAP sensor has a catastrophic failure the computer should ignore the signal and assign a set value to that input. This will turn on the check engine light and put the vehicle in what is referred to as a "limp home mode". With that said I have seen a few isolated cases where the map sensor was melted and the 5 volt refferance signal was going straight to ground. In the cases I'm referencing the vehicle would start and run for a few seconds then stall. I have seen this condition twice on a 7.3L powerstroke diesel in E350's.
Yes....the MAP sensor tells the computer the amount of pressure or vacuum in the engine. This changes with throttle opening....etc. If the sensor is bad the settings will be bad. The MAP sensor can be tested for free at AutoZone.....and you can just take it in. They don't need it on the car.
engine will stall out and run very bad.
no it only helps to controle the air
YES it does. It should be close to intake.
The MAP sensor - another frequent cause of stalling or non-starting. This measures the air pressure in the manifold. You can test it - if your car won't start, just unplug the electrical connection from the MAP sensor. If it starts, replace the sensor. MAP sensor details. (It may act as though the fuel pump is not working properly - starting, then quickly dying).
misfire ? could be a bad tps sensor or map sensor or maf sensor lol
A bad map sensor can cause a computer code, that would trigger the light. Run a list of computer codes to see what shows as a problem.
It sounds like the MAP sensor is bad. Make sure there is no cracks or holes in the vacuum line and if it is fine, replace the MAP sensor.
The location of the map sensor depends on what year of which model car you are asking about.
I would suspect the map sensor is bad.
MAP sensor going bad will cause that exact symptom, try unplugging the MAP sensor, if the vehicle will run with it unplugged then you know the MAP sensor is bad. My 88 Dodge Aries did the exact same thing.
The MAP sensor is on top of the throttle body. as you are looking at the engine from the front of the car, it is on the right side of the engine. The sensor says "MAP Sensor" on the top of it. very convenient.