I have a 2000 Chevy Venture with a broken pulley/wheel in the serpentine belt path. The pulley/wheel in question is at the bottom of what I believe is the tensioner assembly. However the various diag

I suspect that your pump needs replacing. The pulley would only break if the pump is requiring more force to be turned. This would also explain why you have no power steering.

I have a 2001 Chevy venture, and the belt broke. Seems that the A.C. Clutch got stuck and the new belt just squeals very loudly.
Does anyonne know how I can measure how long the belt needs to be while by-passing the A.C.? Thanks

OK, having REAL hard time looking up the diagrams today, however, given that the engine will turn (at the crankshaft) in a clockwise direction, 1) first locate the tensioner pulley(s) {there is usually only one per belt, and they are mounted to a bar/ arm that will move, SEE FIG A} AND the idler pulley(s) for each belt/ pulley track {the path over each set of pulleys as they are away from the engine face} ((e.g. if there are two pulleys on the crankshaft that are face to face, then there would be two tracks for a belt (one each) to go around all of the pulleys on that track)){e.g. #1 in FIG A is one belt track/ path. and # 3 is a different track/ path}



where #2 is the tensioner pulley in this example.

2) starting from the crankshaft, go along the bottom of the pulley towards the left of the engine face to the next pulley, if that pulley is smooth on the round part, then that means that the outside of the serpentine belt goes there, if it is grooved, then the inside of the serpentine belt goes there. and follow the path around the clock (so to speak ) for each path.

Some parts dealers will show you the diagrams for your vehicle, but some won't. the diagram(s) MAY be in your owners manual.
good luck.

There should be a diagram on one of the pulleys. I believe it is the idler pulley.

Sounds like you tesioner failed look for an arm that might have had a pulley on it if it has a 1/2 or 3/8 square hole in it your tensioner lost its pulley. they are available at parts stores and are pretty easy to replace just be sure to double check the belt diagram under the hood to be sure everything is in place.

My sincere apologies for the delayed response.
I am personally going back to answer your unanswered questions.

I do not know if you still need this information, but I am going ahead and answering it anyway. You may want to Print the Diagrams for future use.

I am assuming this "van" is a Chevy Venture?
CLICK on the following LINK. It has the Belt Diagrams you will need.
If you would: Before Clicking: Let me know if this helped you, or if you have any additional information or questions. Feel Free to contact me at FixYa.com!
Again my apologies...
http://www.2carpros.com/car_repair_information/year/2000/make/chevrolet/model/venture/2000_chevrolet_venture_drive_belt_routing_diagram.htm

Firt - study & write down (draw) the belt path,,
and be sure about it..

Then - put a wrench on the nut in the center of the tension pully.. Move the tension pully to loosen the belt.. Pull belt off..

Repeat to put new one on..

Should be pretty easy..

THERE SHOULD BE A HOLE WHERE THE DOWEL PIN GETS INSERTED. I BELIEVE THE PULLEY GOES ABOVE THE TENSIONER. HOPE THIS HELPS. GOOD LUCK. THANK YOU IN ADVANCE FOR AN HONEST RATING AND FOR USING FIX-YA. KEEP ME POSTED PLEASE

PULLEY ALIGNMENT.WITH BELT ON LOOK AT THE PULLEYS FROM THE SIDE.U MUST HAVE A PULLEY THE IS MISSALIGNED