Pontiac Repair: 2003 sunfire, vacuum lines, supply hose

Question
when i turn the air on in the car, air only comes out of pass. vent the center and drivers side is very faint if at all, and thats on high. i was told to check vaccum lines, but not sure where they all are if that is the prob.

Answer
Hi Dan:

well if it's a vacuum issue most of the time the modes will not change and the air will either come out of the floor or the deforst. It's shouldn't be fain on one side and strong on the other unless something is stuck in one of the vents. The vacuum lines are attached to the back of the heater control assembly. usually the supply hose is purple from the engine. take the head out and start the car and see if you have vacuum at the head if so the issue is either with the head not switching the vacuum to the right mode acatuator or like I said something is stuck in one of the doors. if you don't have vacuum then you have to trace that hose back and see where your loosing vacuum between the negine and the heater control head. Good luck :)