Diagram for a serpentine belt

Question edited for clarity.
Question moved to model category

https://www.google.com/search?q=2001+A8+Quattro+4.2.+serpentine+belt+diagram

hi Robert.
this link will show you some diagrams might help you out.
Belt diagram for 2008 pacifica 3 8 serpentine routing Google Search
or this might help you as well.
Belt diagram for 2008 pacifica 3 8 serpentine routing Google Search

there should be a decal under the hood somewhere that shows the belt routing. if its gone you can probably go to the library and find a book of your car that will show the routing and you can either draw a picture or take a photo of it.

Pop the hood of the car and locate the serpentine belt routing diagram. The diagram on the 2003 Chevrolet Impala is on top of the fan shroud. The diagram will be a picture of all of the accessory pulleys and how the serpentine belt is routed among the pulleys. This diagram will give you the exact direction for routing the new belt onto the pulleys. If you cannot find a serpentine belt routing diagram, take a notepad and pen and draw out the exact routing diagram of the old belt across the pulleys.

2 Locate the serpentine belt tensioner. It is located below the alternator on the left front side of the engine. The tensioner on the 3.4 liter, 3.5 liter and the 3.9 liter engines will require a 3/8 ratchet to release the belt tensioner. The 3.8 liter engine will require a ratchet and a 15 mm socket for the belt tensioner. Rotate the belt tensioner clockwise to loosen and remove the belt from the belt tensioner pulley.

3 Slide the old belt from the belt tensioner pulley. Remove the belt from the remaining pulleys and pull the belt from the engine compartment.

4 Route the new belt across the crankshaft pulley first. The crankshaft pulley is the big pulley on the bottom of the engine in the center. Then route the serpentine belt across the remaining pulleys as directed by the serpentine belt routing diagram. Leave the belt tensioner pulley for last.

5 Rotate the belt tensioner clockwise again to relieve the tension and slide the new belt across the top of the belt tensioner pulley. Release the belt tensioner and the belt will tighten up as the tensioner applies pressure to the belt. Make sure the new belt is properly seated in all the pulleys.

6 Crank the engine and inspect the belt again to make sure that it stays seated in the pulleys.

Read more: How to Replace a Serpentine Belt on a 2003 Chevrolet Impala ' eHow.co.uk http://www.ehow.co.uk/how_6120665_replace-belt-2003-chevrolet-impala.html#ixzz1Yi6QLAjb

Try this site Dayco Belts, click this link and go through the menu to find your year, model and engine size. On the last page you will find a link to "Routing" this link will show a picture of you cars belt routing.

Hi, first, keep this diagram around as you will need it to route the serpentine belt when you reinstall it. There may also be a diagram under the hood by the radiator.
Next, follow this link and watch the video that shows you how to replace a serpentine belt...
http://www.wonderhowto.com/how-to/video/how-to-inspect-and-replace-your-car-s-serpentine-belt-267229/
Take care

Go to daycoproducts.com. Click on car and trucks, then belts, then serpentine belts, then go to the right side of the page and click on "belt routing guide" find your vehcle and get the illistration number. Then, close that page and go to "belt routing illistrations" and find the illistration for your car. // '); }// ]]> ' + ((i == 0) ? ads_feedback_html : '') + '' + '' + '' + google_ads[i].line1 + '' + '' + '' + makeBoldAdWords(google_ads[i].line2) + ' ' + makeBoldAdWords(google_ads[i].line3) + '' + '' + '' + google_ads[i].visible_url + '' + '' + '' + '' + 'Ads by Google' + '' + '
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You didn't list your motor size so please pick the applicable diagram:


Accessory serpentine belt routing—4.8L, 5.3L & 6.0L engines


Accessory serpentine belt routing—5.7L engines with A/C


Accessory serpentine belt routing—5.7L engines without A/C


Accessory serpentine belt routing—6.5L Diesel engines


Accessory serpentine belt routing—7.4L engines


Accessory serpentine belt routing—8.1L engines

Are you using the old belt or a new one? Just make sure the belt is the right one. There is only one right way to route the belt. There should be a diagram of the belt routing on the fan shroud or hood. If you can't find it, I've had some luck doing an internet search for the right routing diagram.

This is the belt routing diagram for a Chrysler NY Salon 3.3L 1993
model. Hope it helps you. Gregg.