Overhaul - 42LE Automatic Transmission: Operation
- Models Without Autostick
When gearshift lever is in "OD" (overdrive) position, transaxle will shift through all 4 speeds with torque converter lock-up in Overdrive. When gearshift lever is in "3" position, transaxle uses only 1st, 2nd and 3rd gears with 2nd-to-3rd gear shift delayed until vehicle speed is at least 40 MPH. When operating with gearshift lever in "3" position, torque converter lock-up occurs in 3rd gear for improved transaxle cooling. If engine coolant temperature becomes excessively warm, torque converter lock-up will occur in 2nd gear. When gearshift lever is in "L" position, engine braking is provided for descending grades.
- Models With Autostick (Intrepid, Prowler & 300M)
With gearshift lever in "OD" position, transmission shift schedule is same as non-autostick vehicle. When gearshift lever is moved into "A/S" (autostick) position, transaxle remains in same gear until gearshift lever is moved to left (downshift) or right (upshift). Vehicle can be driven from a complete stop in 1st, 2nd or 3rd gear. Shifting into "OD" position cancels autostick mode and transaxle resumes OD shift schedule. For safety, durability and driveability, some shifts are executed automatically or prevented. See AUTOSTICK OVERRIDE SHIFT SCHEDULE
table.
- All Models
TCM contains a self-diagnostic system which stores a DTC if a transaxle problem is present. DTCs can be retrieved to determine the transaxle problem area. For information on electronic transaxle components, see CHRYSLER 42LE ELECTRONIC CONTROLS article.
AUTOSTICK OVERRIDE SHIFT SCHEDULE
| Shift Sequence |
Condition |
| Automatic Shifts |
| 4-3 Coast |
13 MPH |
| 3-2 Coast |
9 MPH |
| 2-1 Coast |
5 MPH |
| 1-2 Upshift |
| 2.7L & 3.2L |
6300 RPM |
| 3.5L |
6600 RPM |
| 2-3 |
| 2.7L & 3.2L |
6300 RPM |
| 3.5L |
6600 RPM |
| 4-3 Kickdown |
13-47 MPH |
| Overridden Manual Shifts |
| 3-4 |
Less Than 15 MPH |
| 3-2 |
|
| 2-1 |
|
Courtesy of CHRYSLER CORP.