Pontiac 2000 Sunfire

The gear, that is attached to the actuator that moves that window up and down, may be stripped out or the actuator may be getting jammed at a certain point. The only way to really know for sure is to pull the inside door cover off and watch the actuator when you make the window go up and down. DO NOT PUT YOUR FINGERS NEAR THE ACTUATOR WHILE IT IS MOVING. Just take your time and you will be able to figure it out.

http://www.2carpros.com/diagrams/pontiac/sunfire/2002

Here ya go. The tensioner pulley should have a square hole (1/2" or 3/8") to accept a ratchet wrench for levering it enough to slip belt over. Some use a bolt to put a socket or wrench on for moving it about an inch to slip belt on.
Good luck.

Firs check the belt tension, you should have about 1/4 of an inch free play in the belt, that is up and down movement of the belt, also check the fluid level.
Is there any noises from the powersteering pump, like a bubbling noise or a whirring noise?

need to know the engine size and you should have a diagram for the belt routing under the hood. if the belt tensioner is faulty or one of the pulleys have seized .have those repaired first instead of putting on the belt again.9 out 10 it is a faulty part that is why you may have lost the belt.

heres a couple of picture diagrams to help you, the most common area for a leak on these is the cooler line, this is the return line in which it is snaked in a s type shape to cool the power steering oil, these cooler line rots and leaks, so take a look at this first, its located at the bootm of the frame on the left side under the engine,hope this helps.

Theres usually a belt diagram sticker either under the hood or on the body under the hood.

here is a link your belt diagram. pdf files in the right upper corner.


http://www.daycoproducts.com/daycoweb.nsf/cf652a4feb630ad0862571a4005ae40c/a866a821123f887c862571a5006988df!OpenDocument

Hope this helps...

Check your power steering for fluid level.If its ok you most probably have worn track rod ends or bottom ball joints

highley doubt it because you serpentine belt is on a torque pulley, and you should have added ac refrigerant to a nozzle usually covered by a blue cal about the width of a dime, add the refrigerant to that one

on the passenger side all the way in the back on the top of the motor , should be on the belt side on the power steering pump please rate -jeff