You will need to go to Autozone and borrow or buy a tensioner wrench The tensioner wrench fits on to the faceplate nut on the tensioner pully The tensioner wrench is simply pulled clockwise and this releases the tension on the spring-loaded pully and the serpentine belt is then removed with the pressure constantly applied to the tensioner pully so it allows the serpentine belt to be relaxed There is a schematic on the upper inside hood that shows how the serpentine belt is "threaded" through the engine/smogpump/a/c compresser/water pump pully
On the 4.0L engine, you can also do this with an appropriate sized socket (around 5/8, I think) and a breaker bar. Turn the center bolt of the idler pulley COUNTER CLOCKWISE about 1/6 to 1/4 turn, then carefully reach under and behind the pulley to locate the retainer latch (it is a flat piece of spring steel, out of sight on the lower right side behind the idler pulley when facing the engine from the front) and press this toward the tensioner pivot; then slowly release the wrench. The tensioner should then stop on the retainer at a semi-released position so you can remove the wrench. To take the idler off the latch, be sure to rotate it COUNTER CLOCKWISE again until you hear the spring release.
You will need to loosen the tensioner pulley on your 1994 Pontiac Grand Am. The old serpentine belt will come loose and can be removed. Put the new serpentine belt on and tighten the tensioner pulley.
loosen the alternator and it will slide right off Check 2carpros.com for a belt routing diagram.
turn belt tensioner clockwise to loosen there is a special tool you can get as loaner tool
Away from the serpentine belt
The serpentine belt on a 2003 Toyota Rav4 can be loosened by turning the retaining bolt on the idler pulley. The belt can then be shifted inward to loosen.
what is the diagram of a serpentine belt for a dodge shadow 1994
need diagram for 1994 chevy truck serpentine belt?
serpentine belt routing diagram for 1994 dodge spirit
Put the serpentine belt on to the pulleys of your 1994 Chevy engine. Tighten a serpentine belt with the tensioner pulley.
My 1995 Ford Explorer has a diagram in the front of the engine compartment showing how the serpentine belt is routed . Does your Ford Aerostar not have that .
There is only one belt, the serpentine belt. You use a wrench to loosen the spring loaded tensioner and remove and replace, there is no timing belt it has a chain.