pressure sensor on top of gas tank

[justin0469]

when looking through pics on the install of a walbro 255, i noticed that none of the pics showed a pressure sensor on top of that piece that the pump is attached to. mine has one. whats the difference?

 

[Defiant]

Can you get a pic? There's a pressure vent with an inversion valve on it. I don't know of a pressure "sensor" up there.

 

[justin0469]

ill try to get a pic tomorrow, but it looks EXACTLY like the MDP sensor and is directly screwed into the top of the plate.

pic of MDP sensor:

You must be logged in to view this image or video.

like i said tomorrow i will get an actual pic of the one im talkin about but thats what the sensor looks like

 

[TurboMike]

97+ cars have a tank pressure sensor as per OBD2 rules. Thats why so many 97+ cars (any cars, not just DSMs) get a check engine light if their gas cap is not screwed on all way after getting some gas.