I have a 1995 F-350 crewcab dually with the fuel injected 460. My question is, there is a vacuum line that comes off of what I think is the flapper door for the heater plenum. The squirrels have eaten almost all of it and I can't figure out where the other end would go. And, is this a dealer item only? Thanks so much for any help. Bill

 

Yes, there is a white vacuum line running to the blend door:


courtesy of subford

 

Yes that is the vacuum line.

 

You can replace the vacuum line with rubber tubing from most any auto parts store. Actually I highly recommend you replace the entire length with it and the rest of the vinyl vacuum lines as well.

 

Will do. Thank you so much for the information. I would've had the entire under hood area torn apart trying to find the other end of that line. Thanks again, Bill