Jeep cherokee 2000 Service Manual page 1044

21 - 136 AUTOMATIC TRANSMISSION—30RH
DIAGNOSIS AND TESTING (Continued)
CONDITION
SHIFTS DELAYED OR
ERRATIC (SHIFTS ALSO
HARSH AT TIMES)
NO REVERSE (D RANGES
OK)
HAS FIRST/REVERSE
ONLY (NO 1-2 OR 2-3
UPSHIFT)
MOVES IN 2ND OR 3RD
GEAR, ABRUPTLY
DOWNSHIFTS TO LOW
POSSIBLE CAUSES
1. Fluid Level Low/High.
2. Throttle Linkage Misadjusted.
3. Throttle Linkage Binding.
4. Gearshift Linkage/Cable
Misadjusted.
5. Fluid Filter Clogged.
6. Governor Valve Sticking.
7. Governor Seal Rings Worn/
Damaged.
8. Clutch or Servo Failure.
9. Front Band Misadjusted.
10. Pump Suction Passage Leak.
1. Gearshift Linkage/Cable
Misadjusted/Damaged.
2. Park Sprag Sticking.
3. Rear Band Misadjusted/Worn.
4. Valve Body Malfunction.
5. Rear Servo Malfunction.
6. Front Clutch Burnt.
1. Governor Valve, Shaft, Weights or
Body Damaged/Stuck.
2. Valve Body Malfunction.
3. Front Servo/Kickdown Band
Damaged/Burned.
1. Valve Body Malfunction.
2. Governor Valve Sticking.
CORRECTION
1. Correct fluid level and check for leaks if
low.
2. Adjust linkage as described in service
section.
3. Check cable for binding. Check for return
to closed throttle at transmission.
4. Adjust linkage/cable as described in
service section.
5. Replace filter. If filter and fluid contained
clutch material or metal particles, an
overhaul may be necessary. Perform lube
flow test.
6. Inspect, clean or repair.
7. Inspect/replace.
8. Remove valve body and air test clutch,
and band servo operation. Disassemble
and repair transmission as needed.
9. Adjust band.
10. Check for excessive foam on dipstick
after normal driving. Check for loose pump
bolts, defective gasket. Replace pump
assembly if needed.
1. Repair or replace linkage parts as
needed.
2. Inspect and replace as necessary.
3. Adjust band; replace.
4. Remove and service valve body. Replace
valve body if any valves or valve bores are
worn or damaged.
5. Remove and disassemble transmission.
Replace worn/damaged servo parts as
necessary.
6. Remove and disassemble transmission.
Replace worn, damaged clutch parts as
required.
1. Remove governor assembly and clean or
repair as necessary.
2. Stuck 1-2 shift valve or governor plug.
3. Repair/replace.
1. Remove, clean and inspect. Look for
stuck 1-2 valve or governor plug.
2. Remove, clean and inspect. Replace
faulty parts.
XJ