Your problem is probably in the wiper transmission itself. There is a switch that tells what position to stop feeding power to the motor. But if that switch isn't working, the rest of the system does not know what to do, nor exactly when! However, if you have a good concept of timing, what you COULD do, is simply turn the wiper switch off the instant they are at the "lowest point" in their sweep cycle ... at a cost of NOTHING!
Do you know what a wiring diagram is and how to use it to pin point places in a electrical circuit to do testing ? How to use a DVOM - digital volt ohm meter ? Those system may have something in common , a ground ! Here is a web site for free wiring diagrams . http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model an engine size . Under system click on transmiission /transaxle , then under subsystem click on shift interlock . Click the search button . Then click the blue link ! The shift interlock system is a safety system that won't allow the gear selector to be moved from park unless the driver is pushing on the brake pedal !
The door lock is not working. Operate the remote keypad, the driver's armrest door lock switch, and the overhead switch until you hear the latch work, then open the door. If this approach fails, 10A FUSE 11 in the central junction box may be open or the rear electronic module may have failed. Once you have the door open, apply WD-40 to the mechanical parts of the latch to prevent future problems.
Did you check the oil level? After making sure that oil and water are at proper levels, and BATTERY is fully charged, start it again while checking the fuel pressure at the fuel rail. Also check and make sure vacuum line to fuel pressure regulator is good and hooked up.
If it doesn't start,try it with the MAF unhooked. Sometimes a bad MAF sensor will keep them from starting.
Outside chance of a bad alternator too. don-ohio
If you went to a Ford Dealer and they could not establish communication with the onboard computer there is definitely something wrong electronically. All the erratic electronic components' behavior gives me a sense the entire electrical system has some short (or multiple shorts perhaps). You might want to go and replace the wiring harness, rather than troubleshooting where one short, or multiple shorts might be located. Oh, and just thinking out loud here ... By chance, did you buy the Windstar secondhand and the origin was a flood-prone area? The symptoms you mention lead me to believe your vehicle may have been caught in a flood or submerged in water which develops erratic electronic behavior down the road such as you're complaining about.
I had a olds Alero 1999 that the speedometer stuck all the way clockwise. I took the instrument panel out and the lens cover. Don't remember if just by removing it it auto went back to zero or I just moved it slightly and it jumped back but it worked. Try it
Needs to have code reset for abs by a obd2 code reader with abs or find a parts house or shop that will reset it. Brake light coming on did you bleed the master cylinder out by connecting rubber lines to ths plastic insert ******* then acuating the master cylinder til all air is pumped out of master cylinder if that was not done then you will need to bleed all brakes until air is out of system that should turn brake light off
a loud knocking noise indicates major engine failure
the mechanic has a lack of ability so get quotes from accredited service center who have experience on your make of vehicle
many mechanics do not understand that on many vehicles it is a relative simple matter to remove the engine /transmission assembly as a unit to work on them rather than to work in vehicle
This could be hard to diagnose for someone that doesn't know about electronically controlled automotive systems . There are two electronic control modules involved ! (FEM) front electronic control module and the (REM) rear electronic control module . The first step would be to hook up a scan tool to look at input data to the control modules. Corrupt signals to the module ! B+ power an ground circuits problems . The wiring inside the harness from the body to driver door , opening an closing of the door breaks the wires over time . Load testing the circuit will find the problem. Ford 150 Power Door Locks Diagnosis