Pontiac Fiero 1988 Service Manual page 750

HYDRAULIC DIAGNOSIS 125C-9
CONDITION
INSPECT COMPONENT
FOR C A U S E
2-3 SHIFT SOFT, SLIPS
OR EARLY (Continued)
• Intermediate Servo
• Accumulator Exhaust Check
Valve
• Spacer Plate
• Check Ball #5
• Case Cover
• Direct Clutch
— Piston to case oil seal damaged.
— Servo piston damaged.
— Servo bore in case damaged.
— Not seating in case.
— Plugged or restricted direct clutch feed
orifice.
— Spacer plate or gaskets leaking, damaged
or incorrectly installed.
— Wrong spacer plate.
— Not seating or missing.
— Porosity in direct clutch case cover
passage.
— Incorrect case cover gaskets.
— Driven sprocket support passages inter-
connected, leaking, or restricted.
— Driven sprocket support oil seal rings
damaged or missing.
— Sleeve loose or out of position.
— Check ball leaking.
— Check ball capsule damaged.
— Damaged/missing seals.
— Cracked/damaged housing or piston.
— Missing or incorrect apply ring.
— Wrong number of clutch plates.
NO 2-3 SHIFT OR 2-3
SHIFT DELAYED
• Oil Level
• T.V. Valve
• Manual Linkage
• Governor
• Intermediate Servo
• Accumulator Exhaust Check
Valve
• Case
— Incorrect level.
— Misadjusted, unhooked, bound or broken.
— Misadjusted.
— Cover w o r n .
— Thrust washer missing.
— Governor seal w o r n or cut.
— Governor spring not seated.
— Governor weights binding on pin.
— Ball missing.
— Governor driven gear stripped.
— Piston to case oil seal damaged.
— Servo piston damaged.
— Servo bore in case damaged.
— Servo orifice bleed cup plug missing in
case.
— Not seating in case.
— Direct c l u t c h accumulator cup plug
(3rd oil) leaking or missing.
— Case to governor shaft sleeve missing
or damaged.
— Center gasket leaking.
H 1 2 5 C - 3 5 3
Figure 7 Diagnosis Chart