Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1999WINDSTAR BASE, VAN CARGO, 3.8 4REPAIR AND DIAGNOSIS (SINGLE PAGE)EXTERNAL PAGESDIFFERENT CARSECTION 406 (AUTOMATIC TRANSMISSION - 4R70W, 4R75W)
1999 Ford Windstar Base, Van Cargo, 3.8 4
Section 406 (Automatic Transmission - 4R70W, 4R75W)
1999 Ford Windstar Base, Van Cargo, 3.8 4SECTION Section 406 (Automatic Transmission - 4R70W, 4R75W)
WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- General Specifications
- Band And Clutch Application Chart A
- Band And Clutch Application Chart B
- Shift Speed Chart
- Stall Speed Chart
- Sensor Resistance Readings
- Selective Thrust Washer - No. 1 Specifications
- Forward Clutch Pack Specifications
- Reverse Clutch Pack Specifications
- Direct Clutch Pack Specifications
- Intermediate Clutch Pack Specifications
- Torque Specifications
- Description And Operation
- Transmission Description
- Identification Tags
- Range Selection
- Shift Patterns
- Disassembled Views
- Bushings, Bearing And Thrust Washer Locator
- Seals, Rings And Gasket Locator
- Main Components And Functions
- Torque Converter
- GEARTRAIN
- Apply Components
- Hydraulic System
- Transmission Electronic Control System
- Notes
- Powertrain Control Module (PCM)
- Air Conditioning (A/C) Clutch
- Brake Pedal Position (BPP) Switch
- Engine Coolant Temperature (ECT) Sensor
- Ignition Coil - Coil On Plug
- Intake Air Temperature (IAT) Sensor
- Mass Air Flow (MAF) Sensor
- Transmission Control Switch (TCS) and Transmission Control Indicator Lamp (TCIL)
- Throttle Position (TP) Sensor
- Digital Transmission Range (TR) Sensor
- Output Shaft Speed (OSS) Sensor
- Turbine Shaft Speed (TSS) Sensor
- Electronic Pressure Control (EPC) Solenoid
- Torque Converter Clutch (TCC) Solenoid
- Shift Solenoid - SSA, SSB
- Transmission Fluid Temperature (TFT) Sensor
- Diagnosis And Testing
- Diagnostic Strategy
- Diagnostic Flow Chart
- Preliminary Inspection
- Road Testing Vehicle
- Shift Point Road Test
- Torque Converter Diagnosis
- Visual Inspection
- Diagnostics
- Output State Control (OSC) Mode
- Transmission Drive Cycle Test
- Diagnostic Trouble Code (DTC) Charts
- Transmission Connector Layouts
- Pinpoint Tests - OSC Equipped Vehicle
- Special Tool(s)
- P0743
- P0750
- P0753
- P0755
- P0758
- P0740
- P1741
- P1742
- P1743
- P0713
- P1711
- P0712
- P1713
- P1783
- P1718
- P1702
- P1704
- P0705
- P0708
- P1705
- P1746, P0960
- P1747, P0962
- P1760
- P0963
- P0748
- P0720
- P0721
- P0722
- P0715
- P0717
- P0718
- P1714
- P1715
- P1740
- P0102, P0103, P1100, P1101
- P0112
- P0113
- P0114
- P0117
- P0118
- P0122, P0123, P1120
- P0300-P0308, P0320, P0340, P1351-P1364
- -
- P1116
- P1124
- P1460
- P1636
- P1703
- P1780
- P0500, P0503, P1502
- U1039
- P0731
- P0732
- P0733
- P0734
- P0741
- P1744
- P1728
- P0781
- P0782
- P0783
- Testing
- Pinpoint Test A: Shift And Torque Converter Clutch Solenoids
- Pinpoint Test B: Transmission Fluid Temperature (TFT) Sensor
- Pinpoint Test C: Digital Transmission Range (TR) Sensor
- Pinpoint Test D: Electrical Pressure Control (EPC) Solenoid
- Pinpoint Test E: Output Shaft Speed (OSS) Sensors
- Pinpoint Test F: Turbine Shaft Speed (TSS) Sensors
- Pinpoint Test G: Solenoid Mechanical Failure
- Shift Solenoids Pre-Diagnosis
- Special Testing Procedures
- Leakage Inspection
- Transmission Fluid Cooler
- Diagnosis By Symptom
- Special Tool(s)
- Diagnosis by Symptom Chart Directions
- Diagnostic Routines
- Engagement Concern: No Forward
- Engagement Concern: No Reverse
- Engagement Concern: Harsh Reverse
- Engagement Concern: Harsh Forward
- Engagement Concern: Delayed/Soft Reverse
- Engagement Concern: Delayed/Soft Forward
- Shift Concerns: Some/All Shifts Missing
- Shift Concerns: Timing Concerns - Early/Late
- Shift Concerns: Timing Concerns - Erratic/Hunting
- Shift Concerns: Feel - Soft/Slipping
- Shift Concerns: Feel - Harsh
- Shift Concerns: No 1st Gear, Engages In Higher Gear
- Shift Concerns: No Manual 1st Gear
- Shift Concerns: No Manual 2nd Gear
- Shift Concerns: 1 - 2 Shift (Automatic)
- Shift Concerns: 2 - 3 Shift (Automatic)
- Shift Concerns: 3 - 4 Shift (Automatic)
- Shift Concerns: 4-3 Shift (Automatic)
- Shift Concerns: 3-2 Shift (Automatic)
- Shift Concerns: 2-1 Shift (Automatic)
- Torque Converter Clutch Operation Concerns: No Apply
- Torque Converter Clutch Operation Concerns: Always Applied/Stalls Vehicle
- Torque Converter Clutch Operation Concerns: Cycling/Shudder/Chatter
- Other Concerns: No Engine Braking In Manual 2nd Or Manual 1st Position
- Other Concerns: Shift Lever Efforts High
- Other Concerns: External Leaks
- Other Concerns: Poor Vehicle Performance
- Other Concerns: Noise/Vibration - Forward Or Reverse
- Other Concerns: Engine Will Not Crank
- Other Concerns: No Park (P) Range
- Other Concerns: Overheating
- General Procedures
- In-Vehicle Repair
- Fluid Pan, Gasket And Filter
- Main Control Valve Body
- Extension Housing Seal
- Extension Housing Gasket
- Electronic Pressure Control (EPC) Solenoid
- Manual Control Lever Shaft And Seal
- Digital Transmission Range (Tr) Sensor
- Reverse Servo Assembly
- Overdrive Servo
- 1 - 2 Accumulator
- 2 - 3 Accumulator
- Transmission Insulator And Retainer
- Output Shaft Speed (OSS) Sensor
- Turbine Shaft Speed (TSS) Sensor
- Removal
- Disassembly
- Disassembly And Assembly Of Subassemblies
- Assembly
- Installation
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.