Name this part...PLEASE!

[Down4aCorona]

My 1982 Regal is having issues down shifting into the passing gear and I noticed the hose that attaches to this is just hanging loose under the car. I can't see anywhere where it looks like it attaches and have no idea what part this is which makes it tough to look up any info. Please advise, THANKS!!!!

 

[foxtrot]

Barometric pressure sensor.

 

[foxtrot]

Also called an intake manifold differential pressure sensor.

 

[xitabl442]

Also called MAP sensor. Hose should go on the bottom.

 

[Down4aCorona]

Where does the other end of the hose not connected to the MAP sensor connect to? Thanks

 

[Danginharl]

Where does the other end of the hose not connected to the MAP sensor connect to? Thanks

Should be connected to manifold vacuum source.

 

[Clone TIE Pilot]

It is a vacuum sensor, it tells the ECM how much vacuum the engine is pulling, so the ECM can figure out how much load is on the engine.

 

[tc1959]

Manifold Absolute pressure sensor. Or MAP it should be connected to a vacuum port on the base of the Carburetor.

 

[Down4aCorona]

Thanks everybody!

 

[Clone TIE Pilot]

Manifold Absolute pressure sensor. Or MAP it should be connected to a vacuum port on the base of the Carburetor.

Some cars used a MAP sensor, some used a vacuum sensor which reads inverse of a MAP sensor. But both do the same job, telling how much load the engine is under to the ECM.