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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 814 (Automatic Transmission - 4R70W, 4R75W) >> Diagnosis And Testing >> Diagnosis By Symptom >> Diagnostic Routines >> Engagement Concern: No Reverse

Engagement Concern: No Reverse

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.
ENGAGEMENT CONCERN: NO REVERSE

Possible Component Reference/Action
202 - ELECTRICAL ROUTINE 
  • No Electrical Concerns
 
302 - HYDRAULIC/MECHANICAL ROUTINE 
Fluid   
  • Incorrect level
  • Adjust fluid to correct level.
  • Condition
  • Inspect condition of fluid.
Shift Linkage   
  • Damaged or incorrectly adjusted
Incorrect Pressures   
  • Low reverse clutch pressure, low reverse band pressure, low line pressure
  • Check pressure at line pressure tap. Refer to the LINE PRESSURE CHART  for specifications. Refer to SPECIAL TESTING PROCEDURES . 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.