WTF is this??
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One hose connects to line running to gas tank, one fat hose goes to your throttlebody, and one skinny one goes the the EVAP purge solenoid/sensor. It's the sensor on the back of the intake manifold to the right of the brake booster nipple.
It relieves extra fuel vapor from the gas tank and reroutes it to the intake manifold so that it doesn't all vent into the atmosphere when you open the tank.
It will cause a CEL if removed in an OBD2 car, but I don't believe it will on OBD1.
It will cause a CEL if removed in an OBD2 car, but I don't believe it will on OBD1.




