Replace the mainshaft if the
bushing for the 3rd clutch feed
pipe is loose or damaged.
Excessive shock
or flares on 3-4
upshift or 4-3
downshift
1. A/T clutch
pressure control
solenoid valve B
defective
2. A/T clutch
pressure control
solenoid valve C
defective
3. Foreign material
in separator plate
orifice
4. 3rd accumulator
defective
5. 4th accumulator
defective
6. 3rd clutch
defective
7. 4th clutch
defective
Check for a stored DTC, and
check for loose connections.
Test the solenoid valve function
with the HDS.
Inspect the A/T clutch pressure
control solenoid valve body
gasket, the ATF feed pipes, and
the O-rings for wear and
damage.
Check for a clogged orifice in
the separator plate. If the orifice
is clogged, remove it and clean
the separator plate orifice.
Check the ATF strainer for
debris. If the strainer is clogged
with particles of steel or
aluminum, inspect the ATF
pump. If the ATF pump is OK,
find the damaged components
that caused the debris. If no
cause for contamination is
found, replace the torque
converter.
Inspect the 3rd and 4th
accumulator pistons, the O-
rings, and the springs for wear
and damage in the servo body.
Check the 3rd and 4th clutch
pressures.
Inspect the mainshaft, the
2008 Honda Civic LX
2006-08 TRANSMISSION Automatic Transmission - Civic (Except Hybrid)