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3-87
Problem
Cause
Remedy
Torque conver ter stall
RPM too low
Low engine power.
Mechanical malfunction.
Do engine power test.
Remove and inspect torque converter.
Transmission pressure
l i g h t c o m e s O N w h e n
shifting from forward to
reverse (all other gears
OK)
Low oil level.
Cold oil.
Leak in reverse pack.
Add oil.
Warm oil to specification.
Do transmission pressure, pump flow, and
leakage check.
Transmission pressure
light comes ON for each
shift
Cold oil.
No time delay in monitor.
Restriction in modulation orifice.
Stuck PPC valve.
Low transmission pressure circuit.
Leak in transmission pressure
circuit.
Failed transmission pump.
Clogged filter.
Warm oil to specification.
Do monitor check.
Remove orifice and inspect for restriction and/or
plugging.
Remove and inspect.
Do transmission system pressure test.
Do converter out pressure test.
Do transmission pump flow test.
Inspect filter. Replace.
Summary of Contents for HL955
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