2005 Mustang Windshield Wipers inoperative
Here is what I found : Water leaks were found after reading TSB 07-14-6 "Water Leak-Front Floor Area". I found poorly sealed A-pillar window weather stripping retainer (plastic piece- black)- which holds rubber window weather strip. My car had been in a microburst of weather (winds about 100 mph). About a month later I discovered mildew smell in car and water beneath carpet in right front floor area. Later found rr and lr floor areas wet beneath carpet. Removed carpet, then diagnosed leak a month or two later. Pressurized cabin per TSB and discovered that molding tape above window weather strip retainer was all crooked due to winds and either suction or pressure of winds. When water gets between plastic retainer and body of car, it leaks inside of weather strip, runs down inside of weatherstrip along body welded seam and enters car between carpet and floor, soaking the recycled padding beneath carpet. After much effort of removing many interior parts, I removed window weather strip and retainer on both sides of car. Used 3-M adhesive remover, then replaced foam which I removed from retainer with 3-M super strength molding tape 7/8 inch x 60...three packages of same. This material is not quite as thick as original tape but seems to work.
Did have Smart Junction Box out of car twice to look for leaks into box. None found, but car acted weird when box removed and replaced. Eg. headlamps on with switch off. Also once turn siganls inop, hazards inop, dash computer said no fuel in car and low oil pressure. Service manual says to upload info from SJB and then download info into a new SJB. Not necessary in my car (with no tire pressure monitors) as SJB finally reset itself. One time headlamps were on even after battery disconnected overnight. Still don't understand operation of SJB and exactly how to reset it (or car's main computer??) but eventually everything works fine now.
W/S wipers were also inop. Thought that was due to SJB, but after much trial and error, testing connections, wiring, wiper motor, I finally discovered the problem: My car had been parked under trees which dropped leaves, seeds, pollen. The drain for the cowl area on the driver's side was partially plugged, which may have caused water to soak the wiper motor and motor electronic circuit board. I removed the cowl cover, wiper arms, wiper motor. I removed the circuit board (which has 12 pins to wiring harness). The board has actually only three pins to the motor. I tighened the female side of the pins between the circuit board and motor. The wipers, which had quit altogether twice in the past three months are now working fine. Incidentally, when they did not work at all, the washers did work.
Weeks of part-time diagnosing these two problems and solving them. Thanks to your help and that TSB, I am back in business. There is always something to fix on this car (2005 GT manual) and I had zero problems with my 2005 V-6 auto...but sold that car in May as I prefer stick shift. The other car also had the water leak problem due to the microburst of weather. I sold it to a Ford dealer and they had to figure out the leak for themselves.
Thanks Again, Richard.