Chrysler Conquest 1988 Service Manual page 1176

21-54
AUTOMATIC TRANSMISSION
- Troubleshooting
&l
Drive in different
throttle conditions
JAT182
JAT18E
DRIVE RANGE I .~
Manually shift the selector lever to range "D", and note shift -1
quality. Drive the ca.r through all automatic shifts and in aIf gear
ranges. Note shift quality and timing [km/h (MPH)], and check '-
whether torque converter is- locked up or not
at 'specified
speed. Check forslippage, noke, or other abnormal conditions. --
If necessary, drive the test sequence under different throttle -i
opening (e.g. light,~ medium or full throttle).
Check overdrive range for slippage, noise, or other abnormal
conditions. Maintain.a constant speed of 56 to 64 km/h (35 to
40 MPH) on a level surface and turn the O.D. switch on the I
console "ON" and- "OFF". The transmission should upshift :
rmmediately when the switch IS turned "ON", and downshift :
immediately when the swatch is turned "OFF".
Because the shock is very low and is not notrceable when the _
torque converter:is locked up, it is difficult to confrrm whether
the torque converter IS locked up or not. So please check the ~z
engine rpm with tachometer while the car is driving to confirm ~~
it. If the torque converter
IS
locked up the engine rpm is .~-
decreased 290--to -400 rpm at the same time. ..
Lock-up zone: Refer to Shift Schedule on page 21-56.
RANGE "2" -r
Manually shift the -selector -lever to range I',". Check for ~_
slippage, hesita.tion or abnormal condition. The transmission ~1
should remain in 2nd gear regardless of car speed or engine
revolutions. Note results. _
RANGE "L"
Manually shift the selector -lever to range I'L". Note shift ~
quality. It should, however, downshift immediately to 2nd gear 1
and downshift again to lstgear as road speed decreases.
Accelerate and. decelerate in 1st gear to determjne engine -:
revolutions. Note results. ~;~
The transmission should not shift rnto 1 st gear-trom mWD'r range I~:
If the car road speed is above approxrmately 50 km/Ii30 MPH).
Record line pressure at each range and at each throttle vacuum .
in accordance withy the pressure testing desdrjbed below. _