N:\common\FLOW CHART COVERS\TRANSMISSION DIAGNOSTIC FLOW CHARTS.

doc
3L80, TH400, TH475, TH375
EARLY OR
SOFT SHIFT
Check fluid level
and condition
LATE, HARSH,
OR NO SHIFT
Check vacuum at
modulator - test
drive with kickdown
switch unplugged
ERRATIC
SHIFT Monitor vacuum to modulator and clean governor
LATE OR NO DOWNSHIFT ON COAST DOWN
HARSH DOWNSHIFTS Monitor vacuum at modulator
NO KICKDOWN
SLIPPING, CHATTERING,
SHUDDERING
LEAKS
From bellhousing
Cooler fittings to case
Governor cover
Breather tube
Pan
Fluid foaming
Fluid ok
Fluid burnt
Check filter and intake pipe and o-rings
Monitor vacuum at modulator - check line pressure
Unit failure
Replace governor
If harsh shift only, send valve body
Late - harsh or no shift, clean governor
In rare cases
could be
internal (pump)
problem
Send valve body
In rare cases, could be
modulator or modulator valve
Clean governor Send valve body
Send valve body In rare cases, may be an
internal (pump) problem
Connect test light to wire at
single-wire connector on the left
side of the trans - turn ignition
switch on - push accelerator all the
way to the floor
Test light lights up
Test light doesn't light up
Send valve body
Vehicle problem - check
transmission control fuse at fuse
panel and check kickdown switch
Check fluid level
and condition On diesels, check
vacuum regulator valve
Fluid ok
Fluid burnt Unit failure
Check line pressure and pull pan
Extension housing
Slinging around bellhousing
Just running out Check pump bolts and seal - check for tool gauge in sealing area
Check converter for cracks
Check for cracked case Use sealer (liquid only) on fitting threads
Check bolt torque Make sure cover is flat Reseal
Fluid level over filled Overheating or restricted cooler Internal problem
Check bolt torque Check for warped or bent pan rail
Check seal bushing and for tool gouges in the seal to
housing area - check yoke for wear or burrs
Warranty coverage on
seal for one time only
CONTINUED NEXT PAGE n:\common\pdq\flowtran\3L80 5/2000

3L80, TH400, TH475, TH375 - cont.
Line pressure specs: If kickdown switch is activated,
pressure will be 90 - 110 psi. The
Neutral @ 1000rpm / 55 - 70 psi pressure regulator and boost valves
Drive @ 1000 rpm / 60 - 90 psi are in the pump
Reverse @ 1000 rpm 95 - 150 psi


NOISE
From bellhousing
In all gears except 3rd
In all gears - changes with road speed
Pump or converter failure
Planetary failure
Check driveline Possible internal failure
ENGAGEMENT
PROBLEMS
Check fluid level
and condition
Delayed Check manual valve adjustment
Check VRV
on diesels
Harsh Possible internal problem Check vacuum at modulator -
if ok, check line pressure
Soft or slipping on engagement Internal problem
Fluid burnt Internal problem
n:\common\pdq\flowtran\3L80two 5/2000
Most likely an internal failure
4L60E
EARLY OR
SOFT SHIFT
Pull codes,
check fluid level
and condition
If 95 or 96,
model, check
build date
Built between
8/95 and 2/14/96
See Bulletin #66-71-03 and
repair accordingly
Fluid burnt
LATE, HARSH,
OR NO SHIFT
Pull codes,
check fluid level
and condition
Fluid burnt
Fluid ok
Internal Problem
Sweep TPS and check VSS signal,
check for updated PCM calibrations
If it sets a clip code, check VSS circuit
before replacing unit
Send valve
body
Internal problem
ERRATIC
SHIFT
Pull codes,
check fluid
level and
condition
Fluid burnt
Fluid ok
Internal problem
Check wiring
connectors
Sweep TPS and
check VSS signal
Send valve
body
Internal
problem
LATE OR NO
DOWNSHIFT ON
COAST DOWN
Stuck in 3rd gear
until vehicle is
shut off?
Yes
No
Pull codes, look for 3 - 2
solenoid code
Pull codes, look for
solenoid codes
Send 3 - 2 solenoid
Solenoid codes , send all shift
solenoids
No solenoid codes - send valve
body and Tran X
Ask
Trans
Tech
HARSH
DOWNSHIFTS
Pull codes,
check fluid level
and condition
Fluid burnt
Fluid ok
Internal problem
High pressure may be
caused by a trouble code
Send
valve
body
Possible
vehicle
problem
Internal problem
NO KICKDOWN Pull codes, check fluid
level and condition
Check TPS voltage range and make
sure accelerator linkage has full travel
Send valve body
Ask Trans Tech
SLIPPING, CHATTERING, SHUDDERING
If vehicle was built between
8/95 and 2/14/96, see Bulletin
66-71-03 and repair accordingly
Pull codes,
check fluid level
and condition
Pull pan to
confirm if
internal problem
Ask Trans
Tech
LEAKS
From bellhousing
From vent tube
From servo cover
From governor cover
From pan
Check front seal and pump bushing, check converter for cracks
Fluid level over-filled Internal problem
Servo cover seal, check case for cracks or gouges
Reseal cover, check case for cracks or gouges
Repair, check pan rail for warpage
CONTINUE NEXT PAGE
n:\common\pdq\flowtran\4L60E 4/2000
NOISE
From bellhousing
In all gears except 3rd
In all gears
Pump problem
Planetary failure
Make sure it's not a vehicle problem Ask Trans Tech
ENGAGEMENT
PROBLEMS
Harsh
Soft
Delayed
Harsh, soft, or delayed - fluid burnt
4L60E
CONTINUED
Pull codes
Pull
codes
May be caused by a trouble code Ask Trans Tech
Check linkage
adjustment
Ask Trans Tech
Unit failure
Pressure regulator valve and boost valve are in the pump.
n:\common\pdq\flowtran\4L60E2nd 4/200
4L80E
EARLY OR SOFT SHIFT Pull codes Check line pressure Ask Trans Tech
LATE, HARSH, OR NO SHIFT
Pull codes and check speed sensors Check line pressure Ask Trans
Tech
ERRATIC SHIFT Pull codes and check wiring connections
Monitor shift commands
and shift with a manual
shifter - such as a TRAN X
LATE OR NO DOWNSHIFT ON COUNT DOWN Pull codes
Pull codes Send force motor, boost valve, and pressure
regulator valve (valves are in pump , but are
accessible from pan)
Ask
Trans
Tech
No Kickdown
Check TPS and accelerator linkage travel
SLIPPING, CHATTERING, SHUDDERING Check fluid level and condition, pull
codes, check for sensor related failure
Internal problem
LEAKS
Locate leak, check for cracks or tool
gouges on area of leak, repair as needed
Prone to driveline problem
causing case breakage or cracks
on right side from rear up to vent
NOISE
Make sure it's in the trans
and not in the vehicle
Changes with
engine speed
Changes with
road speed
Pump or input
area failure
Make sure it's not the carrier
bearing or the differential
ENGAGEMENT
PROBLEMS
Pull codes
Soft or
delayed
Harsh
Unplug harness - if still soft or
delayed, has an internal problem,
Force motor (EPC) problem or pressure
regulator and boost valve problem (all parts
accessible by pulling pan)
Pressure regulator valve and boost valve are in the pump. Failsafe is 2nd gear and reverse.
HARSH DOWNSHIFTS
n:\common\pdq\flowtran\4L80E 4/2000
700R4 - 4L60
Early or soft shift Check fluid level
and condition
Fluid ok
Check TV pressure then
check governor Send
Valve body
Late, harsh or
no shift
Check fluid level
and condition
Fluid burnt
Neutrals out
Fluid ok Check TV pressure
then check governor
Possible pump
(internal)
problem
Send valve body
Unit failure
Erratic shift See if TV cable is sticking
binding or dragging
Governor may
be dragging
Valve body
problem
Possible pump
problem (very rare)
Late or no downshift on coast down Governor dragging Valve body problem
Harsh downshifts TV pressure too high or cable sticking Valve body problem
No kickdown Make sure accelerator pedal is reaching wide open throttle TV pressure too low Valve body problem
Slipping, Chattering,
Shuddering
Check fluid level
and condition
Fluid ok
Fluid burnt
Check TV pressure
Unit failure
Leaks
From bellhousing
From governor cover
From vent tube
From servo cover
From pan
Front seal - check pump bushing, check converter for cracks
Possible valve body problem
Servo cover seal - check case for cracks or gouges
Reseal cover - check case, for cracks or gouges
Repair - check pan rail for warpage
Internal problem
From bellhousing
In all gears except 3rd
In all gears
Pump problem
Planetary failure
Gear train or bearing failure
Noise
Engagement
problems
Harsh
Soft
Delayed
Harsh, soft or delayed - fluid burnt Unit failure
In failsafe TV pressure too high Internal problem
Check manual valve adjustment TV pressure too low Internal problem
Check fluid level and condition If fluid is foaming, check filter to pump seal and housing Internal
problem
If unit was just installed and has a
late shift, check pressure. If 110 - 120
PSI, unit is in failsafe. Pull the cable
tight, start engine and adjust pressure
from high down to spec. 700's will do
a 4 - 2 kickdown under 60 MPH.
n:\common\pdq\flowtrans\700R4-4L60 4/2000
A4LD
EARLY OR
SOFT SHIFT
LATE, HARSH,
OR NO SHIFT
ERRATIC
SHIFT
HARSH
DOWNSHIFTS
NO KICKDOWN
SLIPPING, CHATTERING, SHUDDERING
NOISE
ENGAGEMENT
PROBLEMS
Check fluid
level and
condition
Check for binding throttle valve linkage
and kinked vacuum line to modulator
Check cable adjustment
From bellhousing
Delayed
Harsh
Fluid burnt
Fluid ok
Internal failure
Check throttle valve linkage
adjustment and monitor
vacuum signal at modulator
Send modulator,
valve body, and
governor (install
in that order)
When cold on
the first shift
Check fluid level
and condition
Governor is sticking
* #1 problem *
Check throttle valve linkage
adjustment and vacuum at modulator
Send modulator, governor, and
valve body (install in that order)
Send valve body and governor
(install in that order)
LATE OR NO DOWNSHIFT ON COAST DOWN
Send governor and valve body (install in that order)
Unplug main harness connector - see if vacuum at modulator rises on deceleration Send valve body
Send valve body
Check fluid level and condition
Check shift cable
adjustment and pull pan Internal problem
LEAKS
From pan
From bellhousing
Between main case and bellhousing
Check pump bushing and converter
Retorque pan bolts
Replace unit
Check pan rail for warpage - check case and bolt holes for cracks
Prone to engine - transmission alignment problems -
it is almost always the fault of the engine
See if flex plate is broken - very common problem due to engine -
transmission alignment problems that are usually the fault of the engine
Possible pump problem
Check vacuum at modulator - should be 18 - 20 "
Check shift cable adjustment
Send modulator and valve body (install in that order)
Internal problem
3 - 4 shift and lock-up are commanded by the computer - these two solenoids can set codes -
governor stuck or sticking is a very common problem.
AOD
EARLY OR
SOFT SHIFT
Check fluid level and condition TV pressure too low,
check and adjust
Valve body problem - replace valve body
Late, harsh,
or no shift
TV pressure too high -
check and adjust
Governor stuck or
dragging - clean governor
Valve body problem - replace valve body
ERRATIC
SHIFT
TV cable dragging or sticking -
may need new cable
One gear affected -
send valve body
All gears affected -
clean governor
1st shift late - rest of shifts
stacked - clean governor
LATE OR NO DOWNSHIFT
ON COAST DOWN
Governor sticking - clean governor Shift valve in valve body sticking - send valve body
HARSH
DOWNSHIFTS
TV cable dragging on deceleration - may need new cable
Sticking valve in valve body - send valve body
NO KICKDOWN TV pressure too low - check and adjust Acceleration linkage not achieving wide open throttle -
repair or replace parts as needed
SLIPPING,
CHATTERING,
SHUDDERING
Check fluid
level and
condition
In 1st, 2nd, or reverse -
internal problem
In 3rd and/or 4th gear Check TV pressure
Ok
Low
Clutch or band failure -
internal problem
Clutch or band failure - possibly
caused by vehicle problem or
improper installation
LEAKS
Only after sitting
Leaking from
bellhousing
Only when running
Check front pan bolts
The same as with any
other leaks - check for
gouges or cracks in
area of leak
NOISE
In bellhousing area
In all gears
In all gears except 3rd
Possible pump problem
Possible internal bearing failure
Planetary gear train problem
Engagement
problems Check fluid level
Harsh engagement
Delayed engagement
TV pressure too high - check and adjust
Incorrect manual valve adjustment -
check and adjust
Boost valve or
pressure regulator
valve sticking -
replace valve body
Internal problem
Front pump seal, o-ring or bolts
n:\common\pdq\flowtran\AOD 4/2000
AODE, AODEW, 4R70W
EARLY OR
SOFT SHIFT
LATE, HARSH,
OR NO SHIFT
ERRATIC
SHIFT
LATE OR NO
DOWNSHIFT ON
COAST DOWN
NO KICKDOWN
LEAKS
NOISE
ENGAGEMENT
PROBLEMS
HARSH
DOWNSHIFTS
SLIPPING,
CHATTERING,
SHUDDERING
Pull codes - check fluid level and condition Early shifts Monitor shift commands - most likely a vehicle problem
Check bulletins*
Soft shift Most likely an internal problem
Pull codes - check fluid level and condition
Check bulletins*
Affects one gear
Affects all gears
Possible valve body problem
Monitor computer Possible internal problem
Pull codes - check fluid level and condition
Check bulletins*
Use a shift monitor and manual shifter (Tran X, etc.) to determine
if trans or vehicle related. Trans problem would likely be valve
body related - vehicle problem could be wiring or VSS
Monitor computer signals - most like a valve body problem Possible internal trans problem
Pull codes - check fluid level
and condition - may be high
pressure caused by failsafe
TPS adjustment or
high idle speed are
two possibilities
Possible valve
body problem
Possible internal
trans problem
Check TPS and acceleration linkage range Possible valve body problem
Possible internal trans problem
Pull codes - check fluid level and condition Has a slipping code but fluid is ok Check VSS
Check bulletins*
Most likely an internal trans problem Fluid burnt
From bellhousing
From pan
Other areas
Check pan rail for warpage
When running
Locate source of leak
Only after sitting Try sealer on front pan bolts
Front pump seal - check bushing and converter hub
Pump o-ring - check case for gouges
If slinging around bellhousing, check for cracked converter
Check bolt torque, check for cracks, check for tool gouges
In bellhousing area
In all gears
In all gears except 3rd
Possible pump problem
Drive line noise or internal bearing failure
Planetary gear train problem
Does it have the updated TR/MLPS Pull codes - check fluid level and condition Possible internal problem
*Several bulletins on shift or shudder
complaints requiring PCM being repro-
grammed, also other unique problems.
The 1-2 and 2-3 shift accumulators are in
the case - not in the valve body . Pressure
regulator is in the valve body
n:\common\pdq\flowtran\AODE 4/2000
EARLY OR
SOFT SHIFT
LATE, HARSH,
OR NO SHIFT
ERRATIC
SHIFT
LATE OR NO
DOWNSHIFT ON
COAST DOWN
NO KICKDOWN
LEAKS
NOISE
ENGAGEMENT
PROBLEMS
AXOD
Check fluid level and
condition
Check TV pressure at port above top
cooler line and adjust as needed
Possible valve body problem - if unit
must be removed to access valve
body, do not replace valve body
Check fluid level and
condition
Check TV pressure at port
above top cooler line and
adjust as needed
Stripped governor gear
- possible internal
problem,
Possible valve body problem
- if unit must be removed to
access valve body, do not
replace valve body
TV cable may be sticking
Possible valve body problem - if unit must be removed to
access valve body, do not replace valve body
Possible governor problem
Possible valve body problem - if unit must be removed to access
valve body, do not replace valve body
HARSH
DOWNSHIFTS
Check TV pressure - see if line pressure responds to
throttle signal or if it stays on too high
Possible valve body problem - if unit must be removed to
access valve body, do not replace valve body
TV pressure may be too low
Possible valve body problem - if unit must be removed to
access valve body, do not replace valve body
SLIPPING,
CHATTERING,
SHUDDERING
Check fluid level,
condition, and
TV pressure
Fluid burnt
Fluid and TV ok
Add two
quarts of fluid
Now ok
No help
Drive for 20 minutes and recheck
unit - was not hot enough when
fluid was checked. Fluid
temperature must be 150 -180
degrees to check properly
Internal problem
Side pan
Bottom pan
Channel plate (chain cover) or case
Bellhousing
Repair
Covered under 500 miles
Replace unit
Check stator support (it is soft material) and convertor bushing for seeping - if scored, replace unit
In all gears except 3rd Planetary failure
Changes with engine speed
Changed with road speed
Pump failure or chain and sprockets
Final drive failure
Check fluid level
Harsh
Soft
Check TV pressure
If TV pressure will not respond to adjustment - possible
valve body problem if unit must be removed to access
valve body, do not replace valve body
Make sure unit was 150 -180 degrees
when fluid was checked
Internal problem
Temperature of this trans is very important
when checking fluid level. If not fully warmed
up, fluid will check ok, but will be approx.
2 quarts low. Final check fluid level often
after at least 20 minutes of driving drive.
n:\common\pdq\flowtran\AXOD 4/2000
C6
EARLY OR
SOFT SHIFT
Check fluid level
and condition
Check vacuum hose
to modulator for
kinks, pinching, or
sucking shut and
trapping valve
Gas engine
Diesel engine Check VRV
Turn
modulator
screw in 2
turns
Replace
valve body
LATE, HARSH,
OR NO SHIFT
Turn kickdown
rod adjusting
screw out
1/8th" inch
Check
vacuum
at
modulator
Gas
engine
Diesel
engine
Check VRV
Turn
modulator
screw 2
turns
Clean
governor
Replace
valve
body
ERRATIC
SHIFT
Check fluid level
and condition
Make sure
kickdown rod or
cable is not binding
Make sure the vacuum hose to
the modulator is not routed where
it could be kinked or pinched
Clean
governor
Replace
valve body
LATE OR NO DOWNSH Clean governor Replace valve body
HARSH
DOWNSHIFTS
Gas engine
Diesel engine Check VRV
Change
modulator
Replace
valve body
NO KICKDOWN Adjust kickdown rod or cable
Throttle linkage not reaching wide open throttle Replace valve body
SLIPPING,
CHATTERING,
SHUDDERING
Check fluid level
and condition
Check
VRV on
diesels
Fluid ok
Fluid burnt
Check pan
Unit failure
If pan is clean, replace
valve body
LEAKS Locate source of leak
Check area for tool
gouges or cracks
If in bellhousing area,
check converter for crack
Repair as needed
NOISE
Whining noise in bellhousing
Clunking noise
Noise in all gears except 3rd
Pump is failing
ENGAGEMENT
PROBLEMS
Check fluid level
and condition
Delayed
Harsh
Check shift
linkage
adjustment
Check
vacuum at
modulator
Internal problem
Check line pressure and
see if it responds to
changes in vacuum
See if valve behind
modulator is stuck, or
it modulator is bad
Replace
valve
body
Very rare for this to be a trans problem, usually in the drive train
Planetary gear train is failing
Check vacuum rise on deceleration
n:\common\pdq\flowtran\C6 4/2000
TRANSMISSION
CHATTERING
OR SHUDDERING
Electronic
AODE, 4R70W, AXODE,
4R44E, 4R55E, 5R55E,
E40D, 4R100, 4L60E,
4T60E, 4T80E, 4L80E,
A604, 41TE, A606, 42LE,
42RE, 46RE, 47RE
Modulator controlled
C3, C4, C5, C6, A4LD,
180, 250, 350, 400, 475
Throttle cable controlled
AOD, AXOD, ATX, 200R4,
700R4, 440T4, TH125,
Chrysler non-electronic
Correct fluid?
Correct level?
Fluid condition?
Correct fluid?
Correct level?
Fluid condition?
Go to Advanced
Diagnosis Sheet after
determining condition
of symptoms by
performing the
following tests
Correct fluid?
Correct level?
Fluid condition?
Shudder in lockup - tap the
brake pedal - shudder
should go away
Shudder on a shift will
shudder when the shift occurs
but not on acceleration
Shudder after a shift will shift ok
most of the time, but will shudder
under a load or on acceleration
On some vehicles, the
wrong fluid or simply worn
out fluid is the only problem
Usually on internal
problem such as a cut
lip seal, o-ring, seal, or
a checkball hanging,
leaking, and in some
cases missing
Just another form of
slipping - can be an
internal problem or can
be caused by external
influences
n:\common\pdq\flowtran\chatter 3/2000
E40D
EARLY OR
SOFT SHIFT
LATE, HARSH,
OR NO SHIFT
ERRATIC
SHIFT
HARSH
DOWNSHIFTS
NO KICKDOWN
SLIPPING, CHATTERING, SHUDDERING
LEAKS
NOISE
ENGAGEMENT
PROBLEMS
Pull codes
Codes
No codes
See Code
Reference Chart
Check F.I.P.I.
on Diesels
Possible valve
body problem
Possible unit
failure
Pull codes Check speed sensor - check T.P.S. pr gas engine - check F.I.P.L. on diesels Ask Trans Tech
Check fluid level
and condition
Pull codes and check
connections
Send E400 test box, solenoid pack,
and complete valve body
Ask Trans Tech
LATE OR NO DOWNSHIFT ON COAST DOWN Pull codes Send solenoid pack and valve body Ask Trans Tech
Pull codes Send solenoid pack and valve body Ask Trans Tech
Pull codes Most likely an engine problem - T.P.S. on
gas engines - F.I.P.I. on diesel engines
Possible valve body problem Ask Trans Tech
Check fluid level and condition Pull codes Unit failure
From bellhousing
Extension housing seal and bushing area
Slinging around bellhousing
Running front of pump
Converter is most likely cracked
Pump seals, o-ring, or bolts
*On ambulances only* grounding problem causes
electrical arcing between yoke and bushing. Put ground
strap on extension housing and on the differential
From bellhousing
In all gears except 3rd
All gears all the time
Pump problem
Planetary gear train problem
Bearing or bushing failure
Delayed
Harsh
Is line pressure 55-65 in
forward and 74-100 in reverse
Yes
No
Remove engagement spring in valve body
Internal problem
Does it have the new M.L.P.S.? Check TPS or F.I.P.L . voltage - check idle speed Ask Trans Tech
F.I.P.L.- Fuel Injection Pump Lever Sensor - the diesel version of a T.P.S.
n:\common\pdq\flowtran\E40D 4/2000
TRANSMISSION
EARLY SHIFT
Electronic
AODE, 4R70W AXODE,
4R44E, 4R55E, 5R55E,
E40D, 4R100, 4L60E,
4T60E, 4T80E, 4L80E,
A604, 41TE, A606, 42LE,
42RE, 46RE, 47RE
Throttle cable controlled
AOD, AXOD, ATX, 00R4,
700R4, 440T4, TH125,
Chrysler non-electronic
Modulator controlled
C3, C4, C5, C6, A4LD,
180, 250, 350, 400, 475
Pull
codes
Cable
too loose
Vacuum hose pinched,
collapsed, hooked to
wrong source. See if
vacuum drops when
throttle is opened
See Code
Reference
Chart
If just installed,
possible wrong
governor *Wintertime*
Ice in
modulator line
See
Advanced
Diagnosis
Sheet
If just
installed -
possible
wrong
governor
See
Advanced
Diagnosis
Sheet
See
Advanced
Diagnosis
Sheet
n:\common\pdq\flowtran\earlyshi 3/2000
TRANSMISSION
ERRATIC SHIFT
Electronic
AODE, 4R70W, AXODE,
4R44E, 4R55E, 5R55E,
E40D, 4R100, 4L60E,
4T60E, 4T80E, 4L80E,
A604, 41TE, A606, 42LE,
42RE, 46RE, 47RE
Modulator controlled
C3, C4, C5, C6, A4LD,
180, 250, 350, 400, 475
Throttle cable controlled
AOD, AXOD, ATX, 200R4,
700R4, 440T4, TH125,
Chrysler non-electronic
Pull codes
Codes No
codes
See
Code
Reference
Chart
Check
wiring
connections
Cable sticking
or dragging
Governor
sticking or
dragging
Valve body
See
Advanced
Diagnosis
Sheet
Make sure hose
to modulator is in
good shape
Check kickdown
cable or switch
Governor sticking
or dragging
See
Advanced
Diagnosis
Sheet
See
Advanced
Diagnosis
Sheet
Valve body
n:\common\pdq\flowtran\erratic 3/2000
TRANSMISSION
HARSH SHIFT
Electronic
AODE, 4R70W, AXODE,
4R44E, 4R55E, 5R55E,
E40D, 4R100, 4L60E,
4T60E, 4T80E, 4L80E,
A604, 41TE, A606, 42LE,
42RE, 46RE, 47RE
Modulator controlled
C3, C4, C5, C6, A4LD,
180, 250, 350, 400, 475
Throttle cable controlled
AOD, AXOD, ATX, 200R4,
700R4, 440T4, TH125,
Chrysler non-electronic
Pull codes
Codes No
codes
See
Code
Reference
Chart
See Advanced
Diagnosis Sheet
Is shift timing
late or normal
Late Normal
Check cable
adjustment
or TV
pressure
setting
See Advanced
Diagnosis Sheet
Is shift timing
late or normal
Late Normal
Check
kickdown
cable
Check for
18"
vacuum at
modulator
See Advanced
Diagnosis Sheet
n:\common\pdq\flowtran\harsh 3/2000
TRANSMISSION
HARSH
DOWNSHIFTS
Electronic
AODE, 4R70W, AXODE,
4R44E, 4R55E, 5R55E,
E40D, 4R100, 4L60E,
4T60E, 4T80E, 4L80E,
A604, 41TE, A606, 42LE,
42RE, 46RE, 47RE
Modulator controlled
C3, C4, C5, C6, A4LD,
180, 250, 350, 400, 475
Throttle cable controlled
AOD, AXOD, ATX, 200R4,
700R4, 440T4, TH125,
Chrysler non-electronic
Are upshifts ok
Pull codes
See Code
Reference Chart
Are upshifts ok
See if cable is
sticking or
dragging
Go to
Advanced
Diagnosis
Sheet
Are upshifts ok
Make sure vacuum at
modulator increases on
deceleration
Go to
Advanced
Diagnosis
Sheet
Go to
Advanced
Diagnosis
Sheet

n:\common\pdq\flowtran\harshdow 3/2000
TRANSMISSION
LATE OR
NO SHIFT
Electronic
AODE, 4R70W, AXODE,
4R44E, 4R55E, 5R55E,
E40D, 4R100, 4L60E,
4T60E, 4T80E, 4L80E,
A604, 41TE, A606, 42LE,
42RE, 46RE, 47RE
Modulator controlled
C3, C4, C5, C6, A4LD,
180, 250, 350, 400, 475
Throttle cable controlled
AOD, AXOD, ATX, 200R4,
700R4, 440T4, TH125,
Chrysler non-electronic
Stuck in 1st gear
or in fail safe?
In failsafe Stuck in
1st gear
Check
speed
sensor
Pull codes
Codes No
codes
See
Code
Reference
Chart
See
Advanced
Diagnosis
Sheet
Will it shift when you let
off of the accelerator
Yes No
Cable is
too tight
Stuck or
dragging
governor
Stuck or
dragging
governor
Valve body
(except 440-T4)
See
Advanced
Diagnosis
Sheet
Check kickdown
cable or switch
Stuck or dragging
governor
Valve
body
See
Advanced
Diagnosis
Sheet
Check vacuum to
modulator - needs 18"
n:\common\pdq\flowtran\lateiorno 3/2000
TRANSMISSION
LEAKS
LOCATION OF LEAKS
Pan
Covered by
warranty
under 500
miles
Cooler
lines or
fittings
Loose or
mis-matched
fittings or
cracked
case
Servo
cover or
extension
housing
to case
Not
common
but can
usually be
field
repaired
Rear
seal
Use liquid teflon sealer
only - teflon tape on
fittings is a major
cause of cracked case
or cooler fittings
Warranty coverage
one-time only -
check housing for
gouges and yoke for
burrs, etc.
Bellhousing
When
running
Not
running
Front
pump seal
or pump
o-ring
and/or
pump bolts
On some
units, pan
bolts
provide
into the
bellhousing
area and
can be the
source of
small leaks
Tool gouges and
small cracks can also
be the source of leaks
n:\common\pdq\flowtran\leaks 3/2000
TRANSMISSION
NO DOWNSHIFT
STUCK IN HIGHER GEAR
Electronic
AODE, 4R70W, AXODE,
4R44E, 4R55E, 5R55E,
E40D, 4R100, 4L60E,
4T60E, 4T80E, 4L80E,
A604, 41TE, A606, 42LE,
42RE, 46RE, 47RE
Modulator controlled
C3, C4, C5, C6, A4LD,
180, 250, 350, 400, 475
Throttle cable controlled
AOD, AXOD, ATX, 200R4,
700R4, 440T4, TH125,
Chrysler non-electronic
Most likely in failsafe
so pull codes
Codes No
codes
See Code
Reference
Chart
Check
power to
trans and
computer
See Advanced
Diagnosis Sheet
Will it upshift and
downshift manually
Yes NO
Clean or
replace
governor
Does it
bind up in
reverse
Yes NO
Clutch or
band
welded or
stuck
Valve body
See Advanced
Diagnosis Sheet

n:\common\pdq\flowtran\nodown 3/2000
TRANSMISSION
NOISES
KNOCKING NOISE usually a cracked or broken flexplate - common on
A4LD's and TH350's.
WHINING NOISE FROM THE BELLHOUSING usually indicates a failing pump or
input area bearing.
WHINING NOISE IN REVERSE is usally normal due to power flow through the
gear train.

WHINING OR GRINDING NOISE IN ALL GEARS EXCEPT 3RD GEAR
is a sure sign of planetary component failure.


STRANGE AND UNUSUAL NOISES usually have strange and unusual causes -
see Advanced Diagnosis Sheet.


WHINING NOISE IN ALL GEARS can be a sign of bearing failure, especially
in the output shaft area.
n:\common\pdq\flowtran\noises 3/2000
TRANSMISSION
NO KICKDOWN
Electronic
AODE, 4R70W, AXODE,
4R44E, 4R55E, 5R55E,
E40D, 4R100, 4L60E,
4T60E, 4T80E, 4L80E,
A604, 41TE, A606, 42LE,
42RE, 46RE, 47RE
Modulator controlled
C3, C4, C5, C6, A4LD,
180, 250, 350, 400, 475
Throttle cable controlled
AOD, AXOD, ATX, 200R4,
700R4, 440T4, TH125,
Chrysler non-electronic
Pull Codes
See Code
Reference
Chart
Check
TPS
Operating
Range
See
Advanced
Diagnosis
Sheet
Check
cable or TV
Pressure
adjustment
See
Advanced
Diagnosis
Sheet
Check detent
cable or
kickdown
switch
See
Advanced
Diagnosis
Sheet
n:\common\pdq\flowtran\nokick 3/2000

TRANSMISSION
SLIPPING
Electronic
AODE, 4R70W, AXODE,
4R44E, 4R55E, 5R55E,
E40D, 4R100, 4L60E,
4T60E, 4T80E, 4L80E,
A604, 41TE, A606, 42LE,
42RE, 46RE, 47RE
Modulator controlled
C3, C4, C5, C6, A4LD,
180, 250, 350, 400, 475
Throttle cable controlled
AOD, AXOD, ATX, 200R4,
700R4, 440T4, TH125,
Chrysler non-electronic
Pull codes
See
Code
Reference
Chart
Find out which gear(s)
and go to Advanced
Diagnosis Sheet
Some people confuse a late shift with slipping. Slipping should
be considered as an incorrect gear ratio after a shift, or the clutch
pack or band not allowing full power transfer.
n:\common\pdq\flowtran\slipping 3/2000
TRANSMISSION
SOFT OR
SOGGY SHIFT
Electronic
AODE, 4R70W, AXODE,
4R44E, 4R55E, 5R55E,
E40D, 4R100, 4L60E,
4T60E, 4T80E, 4L80E,
A604, 41TE, A606, 42LE,
42RE, 46RE, 47RE
Modulator controlled
C3, C4, C5, C6, A4LD,
180, 250, 350, 400, 475
Throttle cable controlled
AOD, AXOD, ATX, 200R4,
700R4, 440T4, TH125,
Chrysler non-electronic
Fluid level and
condition and
pull codes
Codes No
codes
See
Code
Reference
Chart
If fluid is
burnt,
check
Code
Reference
Chart for
sensor
related
failure
See Advanced
Diagnosis Sheet
Fluid level
and condition
Fluid ok Fluid burnt
See
Advanced
Diagnosis
Sheet
See
Advanced
Diagnosis
Sheet. Unit
will most
likely need
to be
replaced
Fluid level
and condition
Fluid ok Fluid burnt
See
Advanced
Diagnosis
Sheet
See
Advanced
Diagnosis
Sheet. Unit
will most
likely need
to be
replaced
n:\common\pdq\flowtran\softor 3/2000
TRANSMISSION
VIBRATION
Make sure it's not a
shuddering or
chattering problem
Conditions
Changes with
engine speed
Changes with
road speed
Most likely
a driveline
problem
Will it vibrate in
neutral when you
rev the engine
Yes No
Possible
engine
mis-fire on
malfunction
under a load
or possible
mount
problem
Make sure trans
was ordered for
the correct
engine size -
some externally
balanced engines
have weights on
the converter
On some
vehicles, it is
possible to
unbolt the
converter and run
the engine - this
is a very good
way to confirm
diagnosis
n:\common\pdq\flowtran\vibrastio 3/2000