Dodge Durango (DN). Manual — part 47

CONDITION

POSSIBLE CAUSES

CORRECTION

HAS FIRST/REVERSE
ONLY (NO 1-2 OR 2-3
UPSHIFT)

1. Governor Circuit Electrical Fault.

1. Test using DRB scan tool and repair as
required.

2. Valve Body Malfunction.

2. Repair stuck 1-2 shift valve or governor
plug.

3. Front Servo/Kickdown Band
Damaged/Burned.

3. Repair/replace.

MOVES IN 2ND OR 3RD
GEAR, ABRUPTLY
DOWNSHIFTS TO LOW

1. Valve Body Malfunction.

1. Remove, clean and inspect. Look for stuck
1-2 valve or governor plug.

2. Governor Valve Sticking.

2. Remove, clean and inspect. Replace faulty
parts.

NO LOW GEAR (MOVES IN
2ND OR 3RD GEAR ONLY)

1. Governor Valve Sticking.

1. Remove governor, clean, inspect and repair
as required.

2. Governor Circuit Electrical Fault.

2. Test with DRB scan tool and repair as
required.

3. Valve Body Malfunction.

3. Remove, clean and inspect. Look for
sticking 1-2 shift valve, 2-3 shift valve,
governor plug or broken springs.

4. Front Servo Piston Cocked in Bore.

4. Inspect servo and repair as required.

5. Front Band Linkage Malfunction

5. Inspect linkage and look for bind in linkage.

NO KICKDOWN OR
NORMAL DOWNSHIFT

1. Throttle Linkage Misadjusted.

1. Adjust linkage.

2. Accelerator Pedal Travel Restricted.

2. Verify floor mat is not under pedal, repair
worn accelerator cable or bent brackets.

3. Valve Body Hydraulic Pressures Too
High or Too Low Due to Valve Body
Malfunction or Incorrect Hydraulic
Control Pressure Adjustments.

3. Perform hydraulic pressure tests to
determine cause and repair as required.
Correct valve body pressure adjustments as
required.

4. Governor Circuit Electrical Fault.

4. Test with DRB scan tool and repair as
required.

5. Valve Body Malfunction.

5. Perform hydraulic pressure tests to
determine cause and repair as required.
Correct valve body pressure adjustments as
required.

6. TPS Malfunction.

6. Replace sensor, check with DRB scan tool.

7. PCM Malfunction.

7. Check with DRB scan tool and replace if
required.

8. Valve Body Malfunction.

8. Repair sticking 1-2, 2-3 shift valves,
governor plugs, 3-4 solenoid, 3-4 shift valve,
3-4 timing valve.

STUCK IN LOW GEAR
(WILL NOT UPSHIFT)

1. Throttle Linkage Misadjusted/Stuck.

1. Adjust linkage and repair linkage if worn or
damaged. Check for binding cable or missing
return spring.

2. Gearshift Linkage Misadjusted.

2. Adjust linkage and repair linkage if worn or
damaged.

3. Governor Component Electrical
Fault.

3. Check operating pressures and test with
DRB scan tool, repair faulty component.

21 - 54

42/44RE AUTOMATIC TRANSMISSION

DN

DIAGNOSIS AND TESTING (Continued)

CONDITION

POSSIBLE CAUSES

CORRECTION

4. Front Band Out of Adjustment.

4. Adjust Band.

5. Clutch or Servo Malfunction.

5. Air pressure check operation of clutches
and bands. Repair faulty component.

CREEPS IN NEUTRAL

1. Gearshift Linkage Misadjusted.

1. Adjust linkage.

2. Rear Clutch Dragging/Warped.

2. Disassemble and repair.

3. Valve Body Malfunction.

3. Perform hydraulic pressure test to
determine cause and repair as required.

BUZZING NOISE

1. Fluid Level Low

1. Add fluid and check for leaks.

2. Shift Cable Misassembled.

2. Route cable away from engine and bell
housing.

3. Valve Body Misassembled.

3. Remove, disassemble, inspect valve body.
Reassemble correctly if necessary. Replace
assembly if valves or springs are damaged.
Check for loose bolts or screws.

4. Pump Passages Leaking

4. Check pump for porous casting, scores on
mating surfaces and excess rotor clearance.
Repair as required. Loose pump bolts.

5. Cooling System Cooler Plugged.

5. Flow check cooler circuit. Repair as
needed.

6. Overrunning Clutch Damaged.

6. Replace clutch.

SLIPS IN REVERSE ONLY

1. Fluid Level Low.

1. Add fluid and check for leaks.

2. Gearshift Linkage Misadjusted.

2. Adjust linkage.

3. Rear Band Misadjusted.

3. Adjust band.

4. Rear Band Worn.

4. Replace as required.

5. Overdrive Direct Clutch Worn.

5. Disassemble overdrive. Repair as needed.

6. Hydraulic Pressure Too Low.

6. Perform hydraulic pressure tests to
determine cause.

7. Rear Servo Leaking.

7. Air pressure check clutch-servo operation
and repair as required.

8. Band Linkage Binding.

8. Inspect and repair as required.

SLIPS IN FORWARD DRIVE
RANGES

1. Fluid Level Low.

1. Add fluid and check for leaks.

2. Fluid Foaming.

2. Check for high oil level, bad pump gasket
or seals, dirt between pump halves and loose
pump bolts. Replace pump if necessary.

3. Throttle Linkage Misadjusted.

3. Adjust linkage.

4. Gearshift Linkage Misadjusted.

4. Adjust linkage.

5. Rear Clutch Worn.

5. Inspect and replace as needed.

6. Low Hydraulic Pressure Due to
Worn Pump, Incorrect Control
Pressure Adjustments, Valve Body
Warpage or Malfunction, Sticking,
Leaking Seal Rings, Clutch Seals
Leaking, Servo Leaks, Clogged Filter
or Cooler Lines

6. Perform hydraulic and air pressure tests to
determine cause.

7. Rear Clutch Malfunction, Leaking
Seals or Worn Plates.

7. Air pressure check clutch-servo operation
and repair as required.

DN

42/44RE AUTOMATIC TRANSMISSION

21 - 55

DIAGNOSIS AND TESTING (Continued)

CONDITION

POSSIBLE CAUSES

CORRECTION

8. Overrunning Clutch Worn, Not
Holding (Slips in 1 Only).

8. Replace Clutch.

SLIPS IN LOW GEAR “D”
ONLY, BUT NO IN 1
POSITION

Overrunning Clutch Faulty.

Replace overrunning clutch.

GROWLING, GRATING OR
SCRAPING NOISES

1. Drive Plate Broken.

1. Replace.

2. Torque Converter Bolts Hitting Dust
Shield.

2. Dust shield bent. Replace or repair.

3. Planetary Gear Set Broken/Seized.

3. Check for debris in oil pan and repair as
required.

4. Overrunning Clutch Worn/Broken.

4. Inspect and check for debris in oil pan.
Repair as required.

5. Oil Pump Components Scored/
Binding.

5. Remove, inspect and repair as required.

6. Output Shaft Bearing or Bushing
Damaged.

6. Remove, inspect and repair as required.

7. Clutch Operation Faulty.

7. Perform air pressure check and repair as
required.

8. Front and Rear Bands Misadjusted.

8. Adjust bands.

DRAGS OR LOCKS UP

1. Fluid Level Low.

1. Check and adjust level.

2. Clutch Dragging/Failed

2. Air pressure check clutch operation and
repair as required.

3. Front or Rear Band Misadjusted.

3. Adjust bands.

4. Case Leaks Internally.

4. Check for leakage between passages in
case.

5. Servo Band or Linkage Malfunction.

5. Air pressure check servo operation and
repair as required.

6. Overrunning Clutch Worn.

6. Remove and inspect clutch. Repair as
required.

7. Planetary Gears Broken.

7. Remove, inspect and repair as required
(look for debris in oil pan).

8. Converter Clutch Dragging.

8. Check for plugged cooler. Perform flow
check. Inspect pump for excessive side
clearance. Replace pump as required.

NO 4-3 DOWNSHIFT

1. Circuit Wiring and/or Connectors
Shorted.

1. Test wiring and connectors with test lamp
and volt/ohmmeter. Repair wiring as
necessary. Replace connectors and/or
harnesses as required.

2. PCM Malfunction.

2. Check PCM operation with DRB scan tool.
Replace PCM only if faulty.

3. TPS Malfunction

3. Check TPS with DRB scan tool at PCM.

4. Lockup Solenoid Not Venting.

4. Remove valve body and replace solenoid
assembly if plugged or shorted.

5. Overdrive Solenoid Not Venting.

5. Remove valve body and replace solenoid if
plugged or shorted.

6. Valve Body Valve Sticking.

6. Repair stuck 3-4 shift valve or lockup
timing valve.

21 - 56

42/44RE AUTOMATIC TRANSMISSION

DN

DIAGNOSIS AND TESTING (Continued)

CONDITION

POSSIBLE CAUSES

CORRECTION

NO 4-3 DOWNSHIFT WHEN
CONTROL SWITCH IS
TURNED OFF

1. Control Switch Open/Shorted.

1. Test and replace switch if faulty.

2. Overdrive Solenoid Connector
Shorted.

2. Test solenoids and replace if seized or
shorted.

3. PCM Malfunction.

3. Test with DRB scan tool. Replace PCM if
faulty.

4. Valve Body Stuck Valves.

4. Repair stuck 3-4, lockup or lockup timing
valve.

CLUNK NOISE FROM
DRIVELINE ON CLOSED
THROTTLE 4-3
DOWNSHIFT

1. Transmission Fluid Low.

1. Add Fluid.

2. Throttle Cable Misadjusted.

2. Adjust cable.

3. Overdrive Clutch Select Spacer
Wrong Spacer.

3. Replace overdrive piston thrust plate
spacer.

3-4 UPSHIFT OCCURS
IMMEDIATELY AFTER 2-3
SHIFT

1. Overdrive Solenoid Connector or
Wiring Shorted.

1. Test connector and wiring for loose
connections, shorts or ground and repair as
needed.

2. TPS Malfunction.

2. Test TPS and replace as necessary. Check
with DRB scan tool.

3. PCM Malfunction.

3. Test PCM with DRB scan tool and replace
controller if faulty.

4. Overdrive Solenoid Malfunction.

4. Replace solenoid.

5. Valve Body Malfunction.

5. Remove, disassemble, clean and inspect
valve body components. Make sure all valves
and plugs slide freely in bores. Polish valves
with crocus cloth if needed.

WHINE/NOISE RELATED
TO ENGINE SPEED

1. Fluid Level Low.

1. Add fluid and check for leaks.

2. Shift Cable Incorrect Routing.

2. Check shift cable for correct routing.
Should not touch engine or bell housing.

NO 3-4 UPSHIFT

1. Dash O/D Switch In OFF Position.

1. Turn control switch to ON position.

2. Overdrive Circuit Fuse Blown.

2. Replace fuse. Determine why fuse failed
and repair as necessary (i.e., shorts or
grounds in circuit).

3. O/D Switch Wire Shorted/Open Cut.

3. Check wires/connections with 12V test
lamp and voltmeter. Repair damaged or loose
wire/connection as necessary.

4. Distance or Coolant Sensor
Malfunction.

4. Check with DRB scan tool and repair or
replace as necessary.

5. TPS Malfunction.

5. Check with DRB scan tool and replace if
necessary.

6. Neutral Switch to PCM Wire
Shorted/Cut.

6. Test switch as described in service section
and replace if necessary. Engine no start.

7. PCM Malfunction.

7. Check with DRB scan tool and replace if
necessary.

8. Overdrive Solenoid Shorted/Open.

8. Replace solenoid if shorted or open and
repair loose or damaged wires (DRB scan
tool).

9. Solenoid Feed Orifice in Valve Body
Blocked.

9. Remove, disassemble, and clean valve
body thoroughly. Check feed orifice.

DN

42/44RE AUTOMATIC TRANSMISSION

21 - 57

DIAGNOSIS AND TESTING (Continued)