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