Transmission Toast?

BPKOTA98 said:

NO THEY DO NOT HAVE A LIMP MODE! I do this for a living everyday, every single day. There only a couple things that can happen to change the way it shifts. like a failded temp sensor where it kicks it out of 4 gears & locks the converter but it still shifts. limp mode is when the trans does not shift, becuase the computer locks it in one gears. if you can find info for a 42, 44, or 46re in any dodge manual where it says the transmisson goes into limp mode post it up. im looking at directech right now and nothing says anything about a limp mode.

Click to expand...

What type of fluid to use? (more details) - ATF+3 vs. ATF+4
Chrysler TSB# 21-006-01 notes that all current vehicles only use ATF+4 type 9602, part 05013457AA (for quart bottles). The advantages of ATF+4 over +3 include:

Better anti-wear properties
Improved rust/corrosion prevention
Controls oxidation - eliminates deposits
Anti-foaming
Superior low temperature operation
Maintains its friction properties over time
You can use ATF+4 with all older Chrysler transmissions (except as noted below - some Jeeps).

Rich Hutchinson wrote: [In 1989-91] both the manual and the dipstick said Dexron was okay, which is wrong. For non lockup 3 spds, either can be used. For lockup 3 spds up to some date in 1999 either could be used but ATF+3 was prefered. After that date ATF+4 is to be used in all automatics. (Putting in Dextron makes the clutches chatter due to the absence of a much needed friction modifier found in ATF +4 but it won't make it slip. )

The best bet for transmissions made before 1998 is to just use ATF+4. Even if it's not needed, it's better than Dexron.

The Chrysler ATF+4 info center has this statement: “The previous MOPAR ATF+3® formulation was discontinued in 2005 and ATF+4® is recommended for all transmissions filled with ATF+3®.”
http://www.allpar.com/fix/trans.html

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HARSH ENGAGEMENT
(FROM NEUTRAL TO
DRIVE OR REVERSE)
1. Fluid Level Low 1. Add Fluid
2. Throttle Linkage Misadjusted 2. Adjust linkage - setting may be too long.
3. Mount and Driveline Bolts Loose 3. Check engine mount, transmission mount,
propeller shaft, rear spring to body bolts, rear
control arms, crossmember and axle bolt
torque. Tighten loose bolts and replace
missing bolts.
4. U-Joint Worn/Broken 4. Remove propeller shaft and replace
U-Joint.
5. Axle Backlash Incorrect 5. Check per Service Manual. Correct as
needed.
6. Hydraulic Pressure Incorrect 6. Check pressure. Remove, overhaul or
adjust valve body as needed.
7. Band Misadjusted. 7. Adjust rear band.
8. Valve Body Check Balls Missing. 8. Inspect valve body for proper check ball
installation.
9. Axle Pinion Flange Loose. 9. Replace nut and check pinion threads
before installing new nut. Replace pinion gear
if threads are damaged.
10. Clutch, band or planetary
component damaged.
10. Remove, disassemble and repair
transmission as necessary.
11. Converter Clutch Faulty. 11. Replace converter and flush cooler and
line before installing new converter.
DELAYED ENGAGEMENT
(FROM NEUTRAL TO
DRIVE OR REVERSE)
1. Fluid Level Low. 1. Correct level and check for leaks.
2. Filter Clogged. 2. Change filter.
3. Gearshift Linkage Misadjusted. 3. Adjust linkage and repair linkage if worn or
damaged.
4. Torque Converter Drain Back (Oil
drains from torque converter into
transmission sump)
4. If vehicle moves normally after 5 seconds
after shifting into gear, no repair is necessary.
If longer, inspect pump bushing for wear.
Replace pump house.
5. Rear Band Misadjusted. 5. Adjust band.
DN 42/44RE AUTOMATIC TRANSMISSION 21 - 51
DIAGNOSIS AND TESTING (Continued)
CONDITION POSSIBLE CAUSES CORRECTION
6. Valve Body Filter Plugged. 6. Replace fluid and filter. If oil pan and old
fluid were full of clutch disc material and/or
metal particles, overhaul will be necessary.
7. Oil Pump Gears Worn/Damaged. 7. Remove transmission and replace oil
pump.
8. Governor Circuit and Solenoid Valve
Electrical Fault.
8. Test with DRB scan tool and repair as
required.
9. Hydraulic Pressure Incorrect. 9. Perform pressure test, remove transmission
and repair as needed.
10. Reaction Shaft Seal Rings
Worn/Broken.
10. Remove transmission, remove oil pump
and replace seal rings.
11. Rear Clutch/Input Shaft, Rear
Clutch Seal Rings Damaged.
11. Remove and disassemble transmission
and repair as necessary.
12. Regulator Valve Stuck. 12. Clean.
13. Cooler Plugged. 13. Transfer case failure can plug cooler.
NO DRIVE RANGE
(REVERSE OK)
1. Fluid Level Low. 1. Add fluid and check for leaks if drive is
restored.
2. Gearshift Linkage/Cable Loose/
Misadjusted.
2. Repair or replace linkage components.
3. Rear Clutch Burnt. 3. Remove and disassemble transmission and
rear clutch and seals. Repair/replace worn or
damaged parts as needed.
4. Valve Body Malfunction. 4. Remove and disassemble valve body.
Replace assembly if any valves or bores are
damaged.
5. Transmission Overrunning Clutch
Broken.
5. Remove and disassemble transmission.
Replace overrunning clutch.
6. Input Shaft Seal Rings Worn/
Damaged.
6. Remove and disassemble transmission.
Replace seal rings and any other worn or
damaged parts.
7. Front Planetary Failed Broken. 7. Remove and repair.
NO DRIVE OR REVERSE
(VEHICLE WILL NOT
MOVE)
1. Fluid Level Low. 1. Add fluid and check for leaks if drive is
restored.
2. Gearshift Linkage/Cable Loose/
Misadjusted.
2. Inspect, adjust and reassemble linkage as
needed. Replace worn/damaged parts.
3. U-Joint/Axle/Transfer Case Broken. 3. Perform preliminary inspection procedure
for vehicle that will not move. Refer to
procedure in diagnosis section.
4. Filter Plugged. 4. Remove and disassemble transmission.
Repair or replace failed components as
needed. Replace filter. If filter and fluid
contained clutch material or metal particles,
an overhaul may be necessary. Perform lube
flow test. Flush oil. Replace cooler as
necessary.
5. Oil Pump Damaged. 5. Perform pressure test to confirm low
pressure. Replace pump body assembly if
necessary.
21 - 52 42/44RE AUTOMATIC TRANSMISSION DN
DIAGNOSIS AND TESTING (Continued)
CONDITION POSSIBLE CAUSES CORRECTION
6. Valve Body Malfunctioned. 6. Check and inspect valve body. Replace
valve body (as assembly) if any valve or bore
is damaged. Clean and reassemble correctly
if all parts are in good condition.
7. Transmission Internal Component
Damaged.
7. Remove and disassemble transmission.
Repair or replace failed components as
needed.
8. Park Sprag not Releasing - Check
Stall Speed, Worn/Damaged/Stuck.
8. Remove, disassemble, repair.
9. Torque Converter Damage. 9. Inspect and replace as required.
SHIFTS DELAYED OR
ERRATIC (SHIFTS ALSO
HARSH AT TIMES)
1. Fluid Level Low/High. 1. Correct fluid level and check for leaks if
low.
2. Fluid Filter Clogged. 2. Replace filter. If filter and fluid contained
clutch material or metal particles, an overhaul
may be necessary. Perform lube flow test.
3. Throttle Linkage Misadjusted. 3. Adjust linkage as described in service
section.
4. Throttle Linkage Binding. 4. Check cable for binding. Check for return
to closed throttle at transmission.
5. Gearshift Linkage/Cable
Misadjusted.
5. Adjust linkage/cable as described in service
section.
6. Clutch or Servo Failure. 6. Remove valve body and air test clutch, and
band servo operation. Disassemble and repair
transmission as needed.
7. Governor Circuit Electrical Fault. 7. Test using DRB scan tool and repair as
required.
8. Front Band Misadjusted. 8. Adjust band.
9. Pump Suction Passage Leak. 9. Check for excessive foam on dipstick after
normal driving. Check for loose pump bolts,
defective gasket. Replace pump assembly if
needed.
NO REVERSE (D RANGES
OK)
1. Gearshift Linkage/Cable
Misadjusted/Damaged.
1. Repair or replace linkage parts as needed.
2. Park Sprag Sticking. 2. Replace overdrive annulus gear.
3. Rear Band Misadjusted/Worn. 3. Adjust band; replace.
4. Valve Body Malfunction. 4. Remove and service valve body. Replace
valve body if any valves or valve bores are
worn or damaged.
5. Rear Servo Malfunction. 5. Remove and disassemble transmission.
Replace worn/damaged servo parts as
necessary.
6. Direct Clutch in Overdrive Worn 6. Disassemble overdrive. Replace worn or
damaged parts.
7. Front Clutch Burnt. 7. Remove and disassemble transmission.
Replace worn, damaged clutch parts as
required.
DN 42/44RE AUTOMATIC TRANSMISSION 21 - 53
DIAGNOSIS AND TESTING (Continued)
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.

Click to expand...

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)
CONDITION POSSIBLE CAUSES CORRECTION
10. Overdrive Clutch Failed. 10. Disassemble overdrive and repair as
needed.
11. Hydraulic Pressure Low. 11. Pressure test transmission to determine
cause.
12. Valve Body Valve Stuck. 12. Repair stuck 3-4 shift valve, 3-4 timing
valve.
13. O/D Piston Incorrect Spacer. 13. Remove unit, check end play and install
correct spacer.
14. Overdrive Piston Seal Failure. 14. Replace both seals.
15. O/D Check Valve/Orifice Failed. 15. Check for free movement and secure
assembly (in piston retainer). Check ball
bleed orifice.

Click to expand...

SLIPS IN OVERDRIVE
FOURTH GEAR
1. Fluid Level Low. 1. Add fluid and check for leaks.
2. Overdrive Clutch Pack Worn. 2. Remove overdrive unit and rebuild clutch
pack.
3. Overdrive Piston Retainer Bleed
Orifice Blown Out.
3. Disassemble transmission, remove retainer
and replace orifice.
4. Overdrive Piston or Seal
Malfunction.
4. Remove overdrive unit. Replace seals if
worn. Replace piston if damaged. If piston
retainer is damaged, remove and disassemble
the transmission.
5. 3-4 Shift Valve, Timing Valve or
Accumulator Malfunction.
5. Remove and overhaul valve body. Replace
accumulator seals. Make sure all valves
operate freely in bores and do not bind or
stick. Make sure valve body screws are
correctly tightened and separator plates are
properly positioned.
6. Overdrive Unit Thrust Bearing
Failure.
6. Disassemble overdrive unit and replace
thrust bearing (NO. 1 thrust bearing is
between overdrive piston and clutch hub; NO.
2 thrust bearing is between the planetary gear
and the direct clutch spring plate; NO. 3 thrust
bearing is between overrunning clutch hub
and output shaft).
7. O/D Check Valve/Bleed Orifice
Failure.
7. Check for function/secure orifice insert in
O/D piston retainer.
DELAYED 3-4 UPSHIFT
(SLOW TO ENGAGE)
1. Fluid Level Low. 1. Add fluid and check for leaks.
2. Throttle Valve Cable Misadjusted. 2. Adjust throttle valve cable.
3. Overdrive Clutch Pack Worn/Burnt. 3. Remove unit and rebuild clutch pack.
4. TPS Faulty. 4. Test with DRB scan tool and replace as
necessary
5. Overdrive Clutch Bleed Orifice
Plugged.
5. Disassemble transmission and replace
orifice.
6. Overdrive Solenoid or Wiring
Shorted/Open.
6. Test solenoid and check wiring for
loose/corroded connections or shorts/grounds.
Replace solenoid if faulty and repair wiring if
necessary.
21 - 58 42/44RE AUTOMATIC TRANSMISSION DN
DIAGNOSIS AND TESTING (Continued)
CONDITION POSSIBLE CAUSES CORRECTION
7. Overdrive Excess Clearance 7. Remove unit. Measure end play and select
proper spacer.
8. O/D Check Valve Missing or Stuck. 8. Check for presence of check valve. Repair
or replace as required.
TORQUE CONVERTER
LOCKS UP IN SECOND
AND/OR THIRD GEAR
Lockup Solenoid, Relay or Wiring
Shorted/Open.
Test solenoid, relay and wiring for continuity,
shorts or grounds. Replace solenoid and relay
if faulty. Repair wiring and connectors as
necessary.
HARSH 1-2, 2-3, 3-4 OR 3-2
SHIFTS
Lockup Solenoid Malfunction. Remove valve body and replace solenoid
assembly.
NO START IN PARK OR
NEUTRAL
1. Gearshift Linkage/Cable
Misadjusted.
1. Adjust linkage/cable.
2. Neutral Switch Wire Open/Cut. 2. Check continuity with test lamp. Repair as
required.
3. Neutral Switch Faulty. 3. Refer to service section for test and
replacement procedure.
4. Neutral Switch Connect Faulty. 4. Connectors spread open. Repair.
5. Valve Body Manual Lever Assembly
Bent/Worn/Broken.
5. Inspect lever assembly and replace if
damaged.
NO REVERSE (OR SLIPS
IN REVERSE)
1. Direct Clutch Pack (front clutch)
Worn.
1. Disassemble unit and rebuild clutch pack.
2. Rear Band Misadjusted. 2. Adjust band.
3. Front Clutch Malfunctioned/Burned. 3. Air-pressure test clutch operation. Remove
and rebuild if necessary.
4. Overdrive Thrust Bearing Failure. 4. Disassemble geartrain and replace
bearings.
5. Direct Clutch Spring Collapsed/
Broken.
5. Remove and disassemble unit. Check
clutch position and replace spring.
OIL LEAKS. 1. Fluid Lines and Fittings Loose/
Leaks/Damaged.
1. Tighten fittings. If leaks persist, replace
fittings and lines if necessary.
2. Fill Tube (where tube enters case)
Leaks/Damaged.
2. Replace tube seal. Inspect tube for cracks
in fill tube.
3. Pressure Port Plug Loose
Loose/Damaged.
3. Tighten to correct torque. Replace plug or
reseal if leak persists.
4. Pan Gasket Leaks. 4. Tighten pan screws (150 in. lbs.). If leaks
persist, replace gasket.
5. Valve Body Manual Lever Shaft Seal
Leaks/Worn.
5. Replace shaft seal.
6. Rear Bearing Access Plate Leaks. 6. Replace gasket. Tighten screws.
7. Gasket Damaged or Bolts are
Loose.
7. Replace bolts or gasket or tighten both.
8. Adapter/Extension Gasket Damaged
Leaks/Damaged.
8. Replace gasket.
9. Neutral Switch Leaks/Damaged. 9. Replace switch and gasket.
DN 42/44RE AUTOMATIC TRANSMISSION 21 - 59
DIAGNOSIS AND TESTING (Continued)
CONDITION POSSIBLE CAUSES CORRECTION
10. Converter Housing Area Leaks. 10. Check for leaks at seal caused by worn
seal or burr on converter hub (cutting seal),
worn bushing, missing oil return, oil in front
pump housing or hole plugged. Check for
leaks past O-ring seal on pump or past
pump-to-case bolts; pump housing porous, oil
coming out vent due to overfill or leak past
front band shaft access plug.
11. Pump Seal Leaks/Worn/Damaged. 11. Replace seal.
12. Torque Converter Weld Leak/
Cracked Hub.
12. Replace converter.
13. Case Porosity Leaks. 13. Replace case.
NOISY OPERATION IN
FOURTH GEAR ONLY
1. Overdrive Clutch Discs, Plates or
Snap Rings Damaged.
1. Remove unit and rebuild clutch pack.
2. Overdrive Piston or Planetary Thrust
Bearing Damaged.
2. Remove and disassemble unit. Replace
either thrust bearing if damaged.
3. Output Shaft Bearings Scored/
Damaged.
3. Remove and disassemble unit. Replace
either bearing if damaged.
4. Planetary Gears Worn/Chipped. 4. Remove and overhaul overdrive unit.
5. Overdrive Unit Overrunning Clutch
Rollers Worn/Scored.
5. Remove and overhaul overdrive unit

Click to expand...