I recently had my engine replaced. Now the truck will not idle unless the " idle sensor valve" is unplugged, the truck will run but is still cutting out. I bought a Haynes manual and it says the Intake manifold vacuum tree needs to have each hose removed and marked. I asked the guy who did the work and he said he just plugged them in and it shouldn't make a difference. The Haynes has no diagram. Could You please direct me where I could find something to show where each vacuum line should go.