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Chris (aka- Moose)
Chris (aka- Moose), Ford Technician
Category: Ford
Satisfied Customers: 34651
Experience:  16 years experience with Ford.
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4r70w ford trans.has no reverse and no overdrive.

Customer Reply

Customer: replied 6 years ago.
trans worked fine with no problems , then next day it bangs into high gear .does this 2-3 times .make stop and take off it works fine. then next stop it freewheels in high gear and when i stop to check it out ,i put in reverse and no reverse.pull pan, fluid is clean and no debris. help!
Expert:  Chris (aka- Moose) replied 6 years ago.
So the transmission will not move at all in any gears?
Customer: replied 6 years ago.
put transmission in drive and it shifts through foward gears 1 2 3 just fine, then when it shifts into 4th it just freewheels.when it first started acting up it would shift into 4th with a clunk and had reverse,then it shifted fine 1 2 3 4 without clunk and had reverse, then it shifted 1 2 3 and freeweeled in 4th . stopped and tried to back up it has no reverse, but it still will shift 1 2 3.we drove it 50 miles home in 3rd. I have past experience with older tansmission rebuilds as the c 4 , c6 ,727 chrysler and 350 and 400 turbo but no experience with the electronic shift models. pulled pan and there is no debris and fluid is not burnt expedition is just out of warranty in november and has 36,000 miles on it.
Expert:  Chris (aka- Moose) replied 6 years ago.

Hello I'm Chris a Ford Employee and Certified Engine/Transmission Specialist.

Thanks for asking your question. I am eager to get your vehicle back up and running correct, I am here to help you out for a small fee far less than a dealership and easier on the wallet, so if this information is of aid PLEASE PRESS ACCEPT and help me out financially by paying the small fee. Please reply if further discussion is needed.


Here is what ford says.

Engagement Concern: No Reverse
Possible ComponentReference/Action
202 - ELECTRICAL ROUTINE

· No Electrical Concerns

302 - HYDRAULIC/MECHANICAL ROUTINE
Fluid

· Incorrect level

· Adjust fluid to correct level.

· Condition

· Inspect the condition of the fluid. Carry out Check Fluid Level and Condition Check; refer to Preliminary Inspection in this section.

Shift Linkage

· Damaged or incorrectly adjusted

· Inspect and repair as required. Verify transmission shift cable adjustment; refer to Section 307-05. Adjust transmission shift cable as necessary. After repairing transmission shift cable, verify that the digital TR sensor is correctly adjusted. Adjust the digital TR sensor as necessary.

Incorrect Pressures

· Low reverse clutch pressure, low reverse band pressure, low line pressure

· Check pressure at line pressure tap; refer to Special Testing Procedures in this section for specification. If pressures are low, check the following components: oil filter and seal assembly, main controls, reverse servo, pump assembly, reverse clutch assembly.

Fluid Filter and Seal Assembly

· Plugged, damaged

· Install a new filter and seal assembly.

Main Controls

· No. 6 shuttle ball, manual valve, main regulator valve, 1-2 accumulator seals stuck or damaged

· Inspect for damage. Repair as required.

· Loose bolts

· Tighten bolts to specifications.

· Gasket damaged

· Inspect for damage and install a new gasket.

Low/Reverse Servo

· Seals (piston and cover) damaged

· Inspect for damage. Repair as required.

· Servo cover retaining ring damaged

· Anchor pins (case) damaged

Pump Assembly

· Loose bolts

· Tighten bolts to specifications.

· Porosity/cross leaks/ball missing or leaking, plugged hole

· Inspect pump assembly. Install new as required.

· Gasket damaged

· Inspect for damage and install a new gasket.

· No. 1 and 2 seal rings damaged

· Inspect for damage. Repair as required.

Reverse Clutch Assembly

· Seals, piston damaged

· Inspect for damage. Repair as required.

· Check ball missing or damaged

· Friction elements damaged or worn

Low/Reverse Band

· Band, servo, anchor pins damaged or worn

· Inspect for damage. Repair as required.

 

 

Shift Concerns: 3-4 Shift (Automatic)
Possible ComponentReference/Action
222 - ELECTRICAL ROUTINE
Powertrain Control System

· Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, OSS, transmission control switch (TCS)

· Carry out Self-Test. Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual for diagnosis and testing of the Powertrain Control System. Go To Pinpoint Test A or Go To Pinpoint Test E. Repair as required. Clear DTCs, road test and repeat Self-Test.

· Engine driveability concerns

· Refer to Routine 253.

322 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage, Digital TR Sensor

· Damaged or incorrectly adjusted

· Inspect and repair as required. Verify transmission shift cable adjustment; refer to Section 307-05. Adjust transmission shift cable as necessary. After repairing transmission shift cable, verify that the digital TR sensor is correctly adjusted. Adjust the digital TR sensor as necessary.

Incorrect Pressures

· Forward clutch pressure, direct clutch pressure, line pressure

· Check line, direct and forward clutch pressures at appropriate taps; refer to Special Testing Procedures in this section for specification. If pressures are out of specification, check main controls.

Main Controls

· 3-4 shift valve, solenoid pressure regulator valve, OD servo regulator, 3-4 capacity modulator valve, 1-2 and 2-3 shift valves stuck, damaged or assembled incorrectly

· Inspect for damage. Repair as required.

· Bolts not tightened to specifications

· Tighten bolts to specifications.

· SSA or SSB malfunction

· Activate solenoid using scan tool. If solenoid operation cannot be felt when placing hand on solenoid, install a new solenoid. Inspect O-rings for damage. Repair as required.

· Gaskets damaged

· Inspect for damage and install a new gasket.

· OD servo rod and piston cushion spring or seals damaged

· Inspect for damage. Repair as required.

· Worn or damaged OD servo anchor pins

· Inspect for damage. Repair as required.

· No. 2, No. 4, No. 7 and No. 9 check balls damaged or missing

· Inspect for damage. Repair as required.

· Solenoid screen blocked or damaged

· Clean or install a new screen.

Pump

· Porosity/cross leaks, balls missing, damaged or leaking

· Inspect for porosity/leaks, balls missing. Install a new pump as required.

· Gaskets damaged

· Inspect for damage. Install new gaskets as required.

OD Band

· OD band and reverse clutch drum assembly damaged, worn or assembled incorrectly

· Inspect for damage. Repair as required.

· Intermediate one-way clutch assembly damaged

· Inspect for damage. Repair as required.

Forward Clutch Assembly

· Seals or piston damaged

· Inspect for damage. Repair as required.

· Friction elements worn or damaged

· Inspect for damage. Repair as required.

· Check ball stuck, damaged or not seating correctly

· Inspect for damage. Repair as required.

Input Shaft

· Seals damaged

· Inspect for damage. Repair as required.

 

Here is what I say.

graphic

If you have been what you call a good ford customer at the ford dealer, then they will sometimes help with after warranty assistance.

Chris (aka- Moose), Ford Technician
Category: Ford
Satisfied Customers: 34651
Experience: 16 years experience with Ford.
Chris (aka- Moose) and 8 other Ford Specialists are ready to help you
Customer: replied 6 years ago.
I think you are right. Thanks alot,It had me puzzled
Expert:  Chris (aka- Moose) replied 6 years ago.
Your welcome

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Chris (aka- Moose)
Chris (aka- Moose)
Ford Mechanic
34651 Satisfied Customers
16 years experience with Ford.