Dodge Nitro. Manual — part 334

HARSH UPSHIFT OR

DOWNSHIFT

1. Transmission adaptation/calibration.

1. Check for latest level TCM
software. Perform the TCM
adaptation procedure. Refer to
STANDARD PROCEDURE .

2. Electrohydraulic Unit malfunction.

2. Inspect valve body for
sticky/stuck valves. Repair as
needed. If valve motion is free,
replace shift pressure solenoid
and line pressure solenoid and
retest.

3. Damaged or misbuilt clutch.

3. Remove, disassemble and
repair transmission as needed.

EMCC SHUDDER

AND/OR ROUGH SHIFTs

1. Transmission adaptation/calibration.

1. Check for latest level TCM
software. Perform the TCM
adaptation procedure. Refer to
STANDARD PROCEDURE .

2. Fluid condition, contamination or
wrong type.

2. Change fluid per service
information procedures. See
STANDARD PROCEDURE.

3. Electrohydraulic Unit malfunction.

3. Remove Electrohydraulic Unit.
Inspect for sticky/stuck lock up
control valve. If valve motion is
free, replace the lock up solenoid
and retest.

4. Defective torque converter.

4. Replace torque converter.

GRATING OR SCRAPING

NOISE PROPORTIONAL

TO ENGINE SPEED

1. Torque converter bolts contacting
dust shield.

1. Dust shield bent. Replace if
needed. Torque converter bolt
backed out. Replace with new
bolt and torque to proper level.

2. Damaged/broken drive plate.

2. Inspect driveplate. Replace if
needed.

GRATING OR SCRAPING

NOISE PROPORTIONAL

TO TRANSMISSION

OUTPUT SPEED

1. Driveshaft or rear axle noise.

1. Check driveshaft, center
bearing and axle for noise or
contact with other components.

2. Transmission output bearing noise.

2. Replace output bearing and
retest.

3. Internal transmission damage.

3. Remove, disassemble and
repair transmission as needed.

1. Fluid level low.

1. Check and adjust fluid level.
See STANDARD
PROCEDURE.

2. Transmission in limp-home mode.

2. Check TCM for DTCs. Repair
as needed.

3. Filter plugged.

3. Check TC out pressure, if <
10psi, check for plugged filter.

2007 Dodge Nitro R/T

2007 AUTOMATIC TRANSMISSION NAG1 - Service Information - Nitro

HIGH PITCHED

WHINE/NOISE RELATED

TO ENGINE SPEED

Replace if needed.

4. Filter damaged or missing.

4. Check for damaged/missing
filter or cut/missing o-ring.

5. Oil pump bushing worn/damaged.

5. Visually inspect for worn or
damaged pump bushing. Replace
pump assembly if needed.

6. Oil pump gears worn/damaged.

6. Inspect for worn or damaged
pump gears. Replace pump
assembly if needed.

NOISE ONLY IN 1ST OR

5TH GEAR

1. Broken Tab on K1/K2 Thrust
bearing.

Replace K1/K2 Thrust bearing.

FLARES ON THE 1 - 2

SHIFT

1. Failed F1 ORC. See OPERATION.

1. Replace F1 ORC, B1 Retainer
and K1 Retainer.

2. Stuck 1-2/4-5 valve.

2. Split Electrohydraulic Unit and
inspect 1-2/4-5 valves. Remove
debris if present. If valve can't be
freed replace Electrohydraulic
Unit.

BUMPSHIFT ON 2-1

DOWNSHIFT

1. K1 belleville retainer snap ring.

1. K1 Belleville retainer snap
rings may become unseated.
Disassemble trans and re-seat
snap ring. Verify there are no
stuck 1-2/4-5 shift valves in the
Electrohydaulic unit prior to
removing the trans.

FLARES ON THE 2-3

SHIFT

1.K2 Piston Bottomed Out.

1. Replace Input Shaft Assembly.
This issue can be verified by
making immediate repeated shifts
between 2nd and 3rd. If the flare
is eliminated on subsequent shifts
to 3rd, It is likely that this is the
issue.

2. Failed F2 ORC. See OPERATION.

2. Replace F2 ORC, Rear Sun
Gear and Front Sun Gear

3. Stuck 2-3 Valves.

3. Split Electrohydraulic Unit and
inspect 2-3 valves. Remove debris
if present. If valve can't be freed
replace Electrohydraulic Unit.

4. K2 Clutch Slipping.

4. Inspect and if damaged replace
K2 Clutch Discs and Seals.

5. It is possible that when the steel
cover plate was screwed to the
Electrohydraulic Unit, the spring
was pinched thus deforming the
bore and sticking the valve.

2007 Dodge Nitro R/T

2007 AUTOMATIC TRANSMISSION NAG1 - Service Information - Nitro

5. 2-3 Shift Pressure Valve Spring
Deformed.

Remove the Electrohydraulic Unit
and remove the steel plate
covering the 2-3 shift pressure
valve. If the valve can't be freely
removed from the bore, the spring
was pinched and the
Electrohydraulic Unit requires
replacement.

6. B1 bushing missing.

6. Replace B1 retainer and input
shaft.

SLIPS ON 2-3 UPSHIFT

1. Transmission adaptation/calibration.

1. Check for latest level TCM
software. Perform the TCM
adaptation procedure. Refer to
STANDARD PROCEDURE .

2. Fluid level low.

2. Check and adjust fluid level.
See STANDARD
PROCEDURE.

3. Filter damaged or missing.

3. Check for damaged/missing
filter or cut/missing o-ring.

4. Valve body malfunction.

4. Check for sticky/stuck 2-3 shift
pressure valve or regulator valve.

5. F2 or B2 clutch damaged.

5. Disassemble transmission,
inspect for damaged F2 or B2
clutch. Repair as needed.

FLARE OR NEUTRALS

ON THE 3-4/4-3 SHIFT

1. Debris sticking the 3-4 Holding
Valve

1. Split Electrohydraulic Unit and
remove the 3-4 Shift Pressure and
3-4 Holding Valves. Flush the
valves and bores with a solvent
such as mineral spirits. (Note:
Debris can be a very small sliver
unnoticable unless flushing onto
filter paper.) Only if the valve can
not be freed should the
Electrohydraulic Unit be replaced.

2. Debris Sticking the 3-4 Shift
Pressure Valve

3. Two Plastic Check Balls in one
pocket.

3. Split the Electrohydraulic Unit
and inspect and verify that there is
only one plastic check ball in each
of the 4 pockets. If there are two
in any pocket, remove one and re-
assemble.

SLIPS, BANGS INTO

GEAR, DELAYED

ENGAGEMENT, VENT

TUBE LEAK

1. Casting Void in the Bell Housing.

1. Disassemble the transmission,
remove the pump and gears from
the bell housing. Inspect the pump
gear face in the bell housing for a
3/16" diameter void between the
pump suction and drainback

2007 Dodge Nitro R/T

2007 AUTOMATIC TRANSMISSION NAG1 - Service Information - Nitro

circuits. If void is present, replace
the bell housing.

SLIPS ON 3-4 UPSHIFT

1. Transmission adaptation/calibration.

1. Check for latest level TCM
software. Perform the TCM
adaptation procedure. Refer to
STANDARD PROCEDURE .

2. Fluid level low.

2. Check and adjust fluid level.
See STANDARD
PROCEDURE.

3. Filter damaged or missing.

3. Check for damaged/missing
filter or cut/missing o-ring.

4. Valve body malfunction.

4. Check for sticky/stuck 3 - 4
shift pressure valve or regulator
valve.

5. K3 or B2 clutch damaged.

5. Disassemble transmission,
inspect for damaged K3 or B2
clutch. Repair as needed.

SLIPS ON 4-5 UPSHIFT

1. Transmission adaptation/calibration.

1. Check for latest level TCM
software. Perform the TCM
adaptation procedure. Refer to
STANDARD PROCEDURE .

2. Fluid level low.

2. Check and adjust fluid level.
See STANDARD
PROCEDURE.

3. Filter damaged or missing.

3. Check for damaged/missing
filter or cut/missing o-ring.

4. Electrohydraulic Unit malfunction.

4. Check for sticky/stuck 1 -2/4- 5
shift pressure valve or regulator
valve.

5. B1 or K1 clutch damaged.

5. Disassemble transmission,
inspect for damaged B1 or K1
clutch. Repair as needed.

IN-GEAR SHUDDER ON

HEAVY ACCELERATION

1. Fluid level low.

1. Check and adjust fluid level.
See STANDARD
PROCEDURE.

2. Filter damaged or missing.

2. Check for damaged/missing
filter or cut/missing o-ring.

NO DRIVE

ENGAGEMENT

FOLLOWING A SHIFT

TO N

1. Customer shifting into N at vehicle
speeds greater than 25 mph and tipping
in on the throttle.

1. Instruct the customer that they
should not shift into N at vehicle
speeds greater 25 mph.

2. Shift system malfunction.

2. Inspect shift system for proper
adjustment or damage. Check
shifter for DTCs. Repair as
needed.

1. Instruct customer that R shifter

2007 Dodge Nitro R/T

2007 AUTOMATIC TRANSMISSION NAG1 - Service Information - Nitro