Could someone tell me what this is?

[Diverjer]

While looking for possible lose connections or poor grounds I found this by the brake booster, I know this clamp isn't a factory clamp.  I am the second owner, so don't know what was done.  I couldn't find anyplace where this would go, looks like it just hangs around?   I did pull it up some to get a better picture and it has another piece of foam that is green behind the black one.

 

[CamGTP]

That's the EVAP vent filter thing. Looks like your's has already been replaced at some point in it's life. The factory put them on a clip above the transmission using hard plastic lines that you have to break when you replaces the pieces in the repair kit. Someone must have used regular hose and extended it way out into the engine bay so the dust and dirt would not get in there again.

 

These are the parts in the kit.

 

[Diverjer]

Thanks,so that is the thing that connects to a charcoal canister to vent fuel vapors.  Not sure why we have to worry about a few fuel vapors out here in wide open country?  Think I read somewhere where if you overfill fuel tank, it can plug up the canister.   The government has already hinted our cattle are polluting the country with vapors of a different nature. 

[tbarn]

Does not "vent" fuel vapors. It is the clean air intake for the evap system.

[Diverjer]

Thanks, I haven't a clue how the evap system works, but can see why they would want an air intake up where it's at now and not under the truck.   We are on gravel roads around here.   The guy that had it before me was a big time row crop farmer.  When I changed the cabin air filter it had milo and soybeans in it along with lots of weeds.   Think I will clean those foam pieces and put a wire tie around so they won't fall out.