Is this a drain hose

[night_ryder]

After changing spark plugs, i was finding all the hoses and harness that plug back into the airbox.  I found this hose that goes between the 2,3 throddle bodies and don't remeber taking this off of the air box.  I think it is a drain hose, but wanna make sure.  I have asked a friend of mine, he thinks the same thing.  He is going to check on it but i wanted to see if you guys know what it went to or if it is a drain hose.  

thanks

 

[05BusaLe]

Did you hook up the hose to the bottom of the air box, at the Vac actuator for the internal flapper valve?

 

[night_ryder]

Isn't that hose over by the left side of the frame?

 

[05BusaLe]

Check the fuel pressure regulator (on right side rear of throttle bodys)
Also check intake air pressure switch (on left side rear of throttle bodys)

 

[05BusaLe]

Pic,

 

[night_ryder]

The diagram that u just put up is better than the one i looked at. The air intake pressure switch (A) i have found, but the fuel pressure regulator (B) i don't see where that hose goes by the throttle bodies ( wow i spelled that wrong earlier).

 

[night_ryder]

When would i have pulled this hose off? I don't remember pulling it off when i took the air box off.

 

[night_ryder]

I think i found where that goes but i want to make sure. There is a switch, regulator whatever it is that is attached to the airbox right about the throttle bodies. That has an end that looks like it has something going to that, but i just don't remember pulling it off. I guess i didn't look at all angles when i was taking it apart. I hope that is where that goes and where u were talking about the fuel pressure regulator.

 

[jjmetheny]

The map sensor on the back of the airbox.

 

[night_ryder]

is that where the hose goes?

 

[jjmetheny]

Is anything attached to the map sensor now? If the hose in the pic is attached to all 4 throttle bodies then yes, it goes to the map sensor.

 

[night_ryder]

Hey thanks 05BusaLe and jjmetheny it is the map sensor on the back of the air box and not under the air box.  I appreciate you guys quick response.