I have taken the air pump off of my 1995 Ford f150. The problem I am having is which vacuum lines to kill and which not to kill, any answers?

 

You can take out the diverter valve, and remove the vacuum lines all the way to the TAB and TAD. Leave their electrical connections plugged in, but it won't throw a code if the vacuum lines are unhooked. You can also take out the rake from the head and plug the holes. 1/4" NPT plugs I think, with Loctite. The steel line running down to the exhaust can also come out and get plugged.

 

Also, your cats are going to go bad soon without the air pump. It makes them work more efficiently, and without it they will get plugged. You should see about gutting them or removing them sometime soon.

 

Did you just buy a smaller serpentine belt to run through the drive system, or is there a bracket/idler pulley kit out there?