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What is this vacuum line?

PStansberry78

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Edmond, OK
Year, Model & Trim Level
1993 Explorer XL
I found this vacuum line like this when I went to add oil to my truck the other day. It seems obvious where it should hook in, so I did. That day, it started running rough. Surging during acceleration, sputtering out the tailpipe.

What is this line?

picture.php
 


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PStansberry78

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It did that for a couple of days, but seems (relatively) fine today.
 




Maniak

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1992 XLT 4x4
That looks like one of the lines from the evap system. The box with the 2 round things on the top in the pic is the evap canister. One line goes from there to the tank and another line goes from there to a fitting under the throttle body. The one that goes to the throttle body also has a solenoid/valve between the evap canister and TB which opens when the vehicle is warm/running so it can pull fuel vapors from the charcoal canister (evap canister) and burn them off.

~Mark
 




vq5speed

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Yeah it looks like it should plug right into that hose its laying on...
 




BrooklynBay

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