I installed a new wiper motor. I ran it before installing the wiper arms. it will not stop at zero. it over travels down into the cowling. I try to rest them higher then they stop some where in the middle of the windshield

REMOVAL

1. Raise and support the hood.
2. Remove the windshield wiper pivot arms.
3. Remove the cowl top vent panels.

1. Disconnect the windshield wiper mounting arm and pivot shaft.

1. Remove the access cover from the dash panel.
2. Remove the mounting arm and pivot shaft retaining clip.
3. Disconnect the windshield wiper mounting arm and pivot shaft from the windshield wiper motor.

1. Remove the windshield wiper motor.

1. Disconnect the electrical connector.
2. Remove the three bolts.
3. Remove the windshield wiper motor.

INSTALLATION

1. Install the mounting arm and pivot shaft retaining clip on the windshield wiper mounting arm and pivot shaft.

1. Install the windshield wiper motor.

1. Place the windshield wiper motor in the dash panel.
2. Install the three retaining bolts.
3. Reconnect the electrical connector.

1. Reconnect the windshield wiper mounting arm and pivot shaft.

1. Press on the windshield wiper mounting arm and pivot shaft after it is aligned with the windshield wiper motor.
2. Install the access cover in the dash panel.

1. Install the cowl top vent panels.
2. Install the windshield wiper pivot arms.
3. Adjust the windshield wiper pivot arms.

This is technically for the V6 4.2L but I'm sure those Ford E250's have the same setup for windshield wiper motor. Let me know how it goes.

The wiper motor on a Volkswagen is an electric motor connected through a drive linkage to the wiper arms. Windshield wipers are an integral feature for operating a motor vehicle safely. If your wipers are not functioning, or seem to lack the speed or power they used to have, the wiper motor should be removed and replaced immediately
.

Location

• The wiper motor on a Volkswagen is located directly underneath the plastic cowl cover. The cowl cover is located directly below the windshield.
  

Removal

• Begin by removing the wiper arms by prying off the covers at the base of the arms and removing the nuts that secure the arms to the drive shafts. Label the passenger and driver arms so they can be installed in the same positions. They are not interchangeable. Remove the rubber hood to cowl weather seal. Unscrew the plastic fasteners from the driver's side of the cowl cover, then remove this half of the cover. Remove the fasteners from the passenger's side cowl cover and remove this half of the cover. Disconnect the windshield wiper motor wiring harness by separating the plastic wiring connector. Remove the three bolts that secure the wiper motor to the vehicle's body. Pull the motor slightly away from the body, then remove the nut that connects the motor shaft to wiper linkage. Remove the motor.
  

Installation

• Place the new wiper motor into position in the cowl and reconnect it to the wiper arm linkage. Then reinstall the three retaining bolts. Reconnect the plastic wiring connector to the wiper motor wiring harness. Place the cowl covers into position below the windshield and reinstall the plastic fasteners that retain them. Reinstall the rubber hood to the cowl weather seal. Reinstall the wiper arms in the same position you removed them from, along with the wiper arm retaining nuts and lower wiper arm covers. Turn the windshield wipers on and test for proper operation. If the wiper blades slap against the bodywork surrounding the windshield, loosen the nuts that connect the wiper arms to the shafts and adjust.
  

More Read: OBD2 car diagnostic tool

1. Disconnect the negative battery cable.
2. Remove both wiper arm and blade assemblies.
3. Remove the cowl grille attaching screws and lift the cowl grille slightly.
4. Disconnect the washer nozzle hose and remove the cowl grille assembly.
5. Remove the wiper linkage clip from the motor output arm.
6. Disconnect the wiper motor's wiring connector.
7. Remove the wiper motor's three attaching screws and remove the motor. To install:
   
8. Install the motor and attach the three attaching screws. Tighten to 60-85 inch lbs.
9. Connect wiper motor's wiring connector.
10. Install wiper linkage clip to the motor's output arm.
11. Connect the washer nozzle hose and install the cowl assembly and attaching screws.
12. Install both wiper arm assemblies.
13. Connect the negative battery cable.

Installing the wiper arm connecting clip.

Windshield Wiper Motor
Removal & Installation
To Remove:

1. Remove wiper arms.
   
2. Remove weatherstrip from cowl.
   
3. Remove two cowl vent grille panel screws.
   
4. Remove windshield nozzles and hoses.
   
5. Remove three cowl vent grille panels.
   
6. Disconnect windshield wiper motor electrical connector.
   NOTE: Do not remove crank arm from windshield wiper motor.
   
   
7. Loosen nuts that attach the drive link brackets to the crank arm.
   
8. Remove wiper motor crank arm brackets.
   
   
   
   
   
   
   
   
   
   
   
9. Remove three bolts and windshield wiper motor from vehicle.

To Install:

1. Install windshield wiper motor and three bolts.
   
   
   
   • Torque to: 62 in lbs. (7 Nm)
   
   
2. With right side linkage closest to the windshield wiper motor, install drive
   link brackets to wiper motor crank arm.
   
   
   
   • Torque nuts to: 44 in lbs. (5 Nm)
   
   
3. Connect electrical connector.
   
4. Install nozzles and windshield washer hoses to cowl vent grille.
   
5. Install three cowl vent grille panels and screws to vehicle.
   
6. Install weatherstrip to cowl.
   
7. Install wiper arms.

Front Wiper Motor Removal & Installation

NOTE A new wiper motor assembly comes with the linkage arm installed.

1. Before servicing the vehicle, refer to the Precautions Section.
2. Remove the windshield wiper mounting arm and pivot shaft
   WARNING Do not remove the wiper motor linkage arm from the wiper motor assembly. If the arm is removed, the wiper arms may not park in the correct location.
   NOTE Use a suitable tool to separate the wiper linkage arm from the wiper mounting arm and pivot shaft assembly.
   
3. Remove the 3 bolts and the wiper motor.
   
   
   
   Fig. Wiper motor and linkage
   

To install:

1. Install wiper motor and bolts.
2. Tighten wiper motor bolts to 10 ft. lbs. (13 Nm).
3. Install windshield wiper mounting arm and pivot shaft.
4. Check wiper operation.

Rear Wiper Motor - Removal & Installation

1. Remove the rear pivot arm.
2. Remove the rear wiper motor shaft nut cover
3. Remove the rear wiper motor shaft nut.
4. Open the lift gate window.
5. Remove the rear wiper motor cover trim panel.
6. Disconnect the electrical connector.
7. Remove the 2 rear window wiper motor nuts
8. Remove the rear window wiper motor.
   
   
   Fig. Rear wiper motor view-2008 model shown, other years similar
   

To install:

1. Install rear wiper motor and tighten mounting nuts to 62 inch lbs. (7 Nm).
2. Reconnect the electrical connector.
3. Install wiper motor cover trim panel.
4. Install rear wiper pivot arm tighten nut to 53 inch lbs. (6 Nm).
5. Install shaft nut cover.
   
6. Check wiper operation.

Good luck (remember rated this post).

you have to remove the cowl (panel under wiper arms) by removing the wiper arms and taking off the screws in cowl. The wiper arms need to be pulled away from windshield then you slide the clip at the base over and pry the wipers off. Under the cowl is a screen you remove. Then you can get to the wiper linkage. You can pop off the linkage with a prybar or a big screwdriver. Once it's off you take the bolts holding the motor out unplug the connector and reverse order for installation. The linkages can take some serious manhandling to get back on!

Removal & Installation To Remove:

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Disconnect the battery ground cable.
3. Remove the wiper arms.
4. Remove the 8 plastic retainers and the 6 clips holding the cowl vent screens to the inner panels. Turn the retainers 1⁄4 turn counterclockwise to remove.
5. Remove the cowl vent screens.
6. Disconnect the electrical connector from the wiper motor and remove the 4 bolts that mount the module assembly to the cowl.
7. Remove the windshield wiper module from the vehicle.
8. Rotate the wiper operating arm in a clockwise direction to gain access to the bolt retaining the arm to the motor. WARNING
   Always rotate the wiper operating arm in a clockwise motion or damage to the motor could occur.
   
9. Remove the nut retaining the wiper operating arm to the wiper motor.
10. Remove the three wiper motor-to-wiper module assembly retaining bolts and remove the motor from the vehicle.

To Install:

1. Position the wiper motor on to the module assembly. Install the three wiper motor-to-wiper module assembly retaining bolts. Tighten the bolts to 115-151 in lbs (13-17 Nm).
2. Position the wiper operating arm on the wiper motor output shaft. Install the mounting nut and tighten to 22-29 ft-lbs (30-40 Nm).
3. Position the windshield wiper module onto the cowl. Install the mounting bolts and tighten to 106 in-lbs (12 Nm).
4. Connect the wiper motor electrical connector.
5. Position the cowl vent screens onto the inner panels. Install the 8 plastic retainers and the 6 clips holding the cowl vent screens to the inner panels. Turn the retainers 1⁄4 turn counterclockwise to install.
6. Install the wiper arms.
7. Connect the battery ground cable.
8. Adjust wiper arms if necessary.

Here is the picture of the motor....it is the round object in the middle of the picture that looks like a can and has a square block on the end of it.

You have to remove the cowl vent panel....just under the windshield. $64.00 for a new motor.

Wiper Motor: Service and Repair
Removal
REMOVAL
The front wiper motor comes as a unit with a wiper pivot on each end and mounts to a shaft that holds these two inner pivots.
1. Disconnect and isolate the battery negative cable.
2. Remove the wiper arms.
3. Disconnect the washer hose at the in-line connector located near the air cleaner housing.
4. Lift the cowl grille and disconnect the washer hose grommet from the hole in the wiper module. Pull the washer hose and the grommet
completely through the wiper module tub hole.
5. Remove the cowl grille.
CAUTION: Be careful not to scratch the cowl grille on the corner of the hood.
6. Remove the four brace nuts holding the wiper tub to the lower windshield fence.
7. Remove the four bolts underneath the wiper tub inner brace holding the tub to the bulkhead.
8. Remove all four inner support brace mounting nuts and pull the inner braces just free of the mounting studs.
NOTE: The wiper tub will drop down slightly.
9. Disconnect the driver and passenger side wiper link ends at the inner pivots.
10. Remove the two left wiper motor assembly mounting nuts.
11. Remove the two right wiper motor assembly mounting nuts.
12. Partially lift out the wiper motor assembly out of the wiper tub.
13. Disconnect the wiper motor electrical connector.
14. Remove the wiper motor assembly the rest of the way from the wiper tub and remove from vehicle.
--------------------------------------------------------------------------------------------
Wiper Motor: Service and Repair
Installation
INSTALLATION
1. Install front wiper motor assembly onto wiper tub.
2. Connect the electrical connector to the front wiper motor assembly.
3. Install the four mounting nuts. Tighten nuts to 9 Nm (80 in.lbs.).
4. Push the four inner support braces onto the studs and install the four nuts. Tighten the nuts to 9 Nm (80 in.lbs.).
5. Install the four bolts underneath the wiper tub inner braces that hold the wiper tub to the bulkhead. Tighten the bolts to 17 Nm (150 in.lbs.).
6. Install the four nuts holding the wiper tub to the lower windshield fence line. Tighten nuts to 7 Nm (65 in.lbs.).
7. Apply grease to drive link bushings.
NOTE: Make sure to use Mopar(R) approved grease.
8. Attach the driver and passenger side outer wiper linkage to the inner pivots on the front motor assembly and firmly snap into place.
CAUTION: Do not apply too much force to engage link bushing or damage can occur to the drive link bushing.
9. Position the cowl grille in place.
10. Install the washer hose and grommet into the wiper tub.
NOTE: Be sure to properly seat the washer hose grommet into the bottom of the wiper tub.
11. Connect the washer hose at the in-line connector located by the air cleaner housing.
12. Install the cowl grille.
CAUTION: Be careful not to scratch the cowl grille on the corner of the hood.
13. Connect the battery negative cable.
14. Verify that the wiper motor is in the Park position by cycling the wipers system. When done, remove keys from ignition.
15. Install the wiper arms.
16. Align the wiper arms and tighten nuts to 35 Nm (25 ft.lbs.).
17. Install the wiper arm nut caps.

I have 2007 only. please rate as solved if this is what you needed. good luck.

SECTION 501-16: Wipers and Washers 2007 Freestar/Monterey Workshop Manual REMOVAL AND INSTALLATION Procedure revision date: 04/27/2006
Wiper Motor — Windshield Printable View (104 KB) Removal

1. Remove the windshield wiper arms.

1. NOTE: Disconnect the washer hose before removing the cowl panel grille.
   Remove the pushpin-type retainers and the cowl panel grille.

1. Remove the washer hose grommet from the cowl panel and position aside the washer hose.

1. If equipped, remove the A/C air inlet filter.

1. Remove the 9 cowl panel bolts and position aside the cowl panel.

1. Disconnect the windshield wiper motor electrical connector.

1. Remove the cowl panel from the vehicle.

1. Remove the 4 bolts and the windshield wiper motor.

Installation

1. Position the wiper pivot arms on the windshield wiper motor and install the bolt.
   • Tighten to 15 Nm (11 lb-ft).

1. Install the 3 windshield wiper-to-cowl panel bolts.
   • Tighten to 15 Nm (11 lb-ft).

1. Position the cowl panel in the vehicle and connect the windshield wiper motor electrical connector.

1. Install the washer hose and grommet in the cowl panel.

1. Install the 9 cowl panel bolts.
   • Tighten to 6 Nm (53 lb-in).

1. If equipped, install the A/C air inlet filter.

1. Position the cowl panel grille in the vehicle and connect the washer hose.

1. Install the pushpins.

1. Install the windshield arms and nuts.
   • Tighten to 27 Nm (20 lb-ft).

1. Cycle and park the windshield wipers to check for correct alignment.

I just solved this problem last night with my '05 Impala, and ultimately the solution was what newton5083 stated above.  Yet, it may also be this (I found it online somewhere):
You have bent or broken the "park tab" on the windshield wiper motor bracket. The correct way to fix this is to remove the wiper arms, wiper linkage and wiper motor from the wiper motor bracket, and install a new bracket.
I just bent the tab back into place a couple times for our daughters 2005 Impala but it kept getting bent down again when they didn't take the time to make sure the wipers were not frozen to the windshield, or tried running the wipers to remove heavy snow on the windshield. So yesterday I fabricated a small piece of metal and bolted that to the bracket in the same place the tab stop was.
If someone wants to access this bracket and tab-
1. Use a ½ inch or 13mm socket & ratchet or wrench to remove nuts on wiper arms.
2. They may make a special tool to remove the arms, I used a screwdriver and hammer to tap bottom of the arm to wedge them apart from the spindle.
3. Two small button-looking clips hold the drivers side cowl cover in place under the windshield. These are two-piece clips, pry up the center, than the outer piece.
4. Unclip the washer hose from cowl cover, than pull out plastic cover.
5. There is a smaller plastic cover with on plastic button head holding that cover in place. Gently pry under that clip to remove that cover.
6. Now you can see the wiper trans and bracket. You should see a small tab on that bracket that looks pushed down and bent or possible a square small hole with some torn off metal where the tab broke off.
7. Remove small plastic cover over the wiper transmission and you can see a small spring-loaded arm underneath the wiper transmission assembly.
8. You need to find something to pry that tab back up so when the wipers are running that spring loaded little arm just snaps past the tab running clockwise. It's when you shut off the wipers that the wiper transmission assembly reverses rotation counter clockwise and the small spring loaded arm underneath hits that tab stop, than the wipers will go all the way down and shut off as they should.
Once that tab stop gets bent out of the way the little spring loaded arm has nothing to stop the wiper transmission assembly so it keeps traveling counter clockwise until some other stop shuts the wipers off straight up on the windshield.

There is a revised bracket part # which is supposed to be more durable, GM part #12368639. Here is a copy of the TSB which points out this problem:
Bulletin No.: 05-08-43-003A
Date: March 10, 2005
TECHNICAL
Subject:
Windshield Wipers Park in Up Position (Replace Windshield Wiper Motor Bracket)
Models:
2005 Chevrolet Impala, Monte Carlo
Supercede:
This bulletin is being revised to make a correction to the Parts Information. Please discard Corporate Bulletin Number 05-08-43-003 (Section 08-Body and Accessories).

Condition
Some customers may comment that the windshield wipers park in the out wipe (vertical) position.
Cause
This condition may be caused by a bent park tab on the windshield wiper motor bracket.

Correction
To correct this condition, replace the wiper motor bracket. It will be necessary to transfer the following parts listed below to the new bracket.
^ Wiper transmission
^ Wiper motor crank arm
^ Wiper motor
1. Remove the windshield wiper motor drive system module.
2. Remove the windshield wiper transmission from the windshield wiper motor bracket.
3. Remove the wiper motor crank arm from the windshield wiper motor.
4. Remove the windshield wiper motor from the bracket.
5. Install the windshield wiper motor to the new bracket.
6. Install the wiper motor crank arm to the windshield wiper motor.
7. Install the windshield wiper transmission to the windshield wiper motor bracket.
8. Install the windshield wiper motor drive system module.

A TSB is not a recall, if vehicle is still under warranty the dealer should be repaired for free. If not, you'll have to pay for the repairs.