The easist thing to do is replace the tensioner. A new one will set you back around $40 and should take you well under an hour to change. Just release the belt and remove off the tensioner, undo the single bolt that holds the tensioner in place, remove, and replace. The hardest part is there isn't a lot of room to get your hand in there so you might have to remove the idler wheel to get more room, but again, this is only held on with one central bolt. Hope this helps.
It's behind the serpentine belt tensioner next to the alternator if it is a 4.0 It is located at the end of the upper radiator hose where the thermostat housing bolts to the intake manifold. (V6 3.0L)
No but sometimes it makes it easier The serpentine belt is easily removed without removing the fan shroud This has to be accomplished by using a tensioner wrench
With a socket wrench-place it over the nut that holds in the tensioner and slowly pusn to the left to loosen
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 .
go to napa auto parts online
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.
To adjust the gear selector on a Ford Aerostar, first, ensure the vehicle is in park and the ignition is off. Locate the adjustment mechanism, usually found near the transmission linkage or the gear selector assembly. You may need to loosen a bolt or screw, then shift the selector through the gears to ensure proper alignment before tightening it back into place. Always consult the vehicle's service manual for specific instructions and torque specifications.
Should be on the bottom of th hood after you prop it up look at the front edge of the hood. If not check the manual. Or google images.
Go to Autozones site and check out their repair and specs section ...it's basic but good. http://www.autozone.com/
I had the same problem, so I took the belt off and washed it in soapy water. I then took a wet, soapy cloth and wiped off all of the pulleys. The squeal in my Aerostar was caused by a leaking power steering pump, which leaked fluid on the belt, causing it to slip and squeal.
Aerostar was created in 1953.
You should have a diagram to the left of the hood latch. In the diagram, it should show the tension pulley that needs to relieved. Tools: long ratchet wrench and socket. It's fairly easy to do.