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Transfer Test

  1. Ensure vehicle shifts from 2WD to 4WD when transfer gear lever is shifted from H2 to H4. Repair or replace transfer case assembly if unit did not shift from 2WD to 4WD.
  2. Shift transfer lever from H4 to L4. Gear changes should occur within specification. If transfer did not change from H4 to L4 gears within specification, No. 4 solenoid, ECU or transfer is defective.
PICKUP 4WD (31X10.5R-15 TIRE) 1988-89 SHIFT SPEEDS (1)

Application MPH
"D" Range (2)
NORM
1st-2nd 30-32
2nd-3rd 60-64
3rd-OD 91-96
3rd-OD (3) 26-28
OD-3rd (3) 19-21
OD-3rd 88-92
3rd-2nd 55-57
2nd-1st 27-29
PWR
1st-2nd 36-38
2nd-3rd 68-72
3rd-OD 107-111
3rd-OD (3) 35-37
OD-3rd (3) 19-21
OD-3rd 103-107
3rd-2nd 64-68
2nd-1st 30-32
"2" Range (2) (NORM or PWR)
1st-2nd 30-32
2nd-3rd 73-78
3rd-2nd 60-62
2nd-1st 27-29
"L" Range (2) (NORM or PWR)
3rd-2nd 17-19
2nd-1st 53-56
(1) Wide open throttle.
(2) Transfer shift position H2 or H4.
(3) Fully closed throttle.
PICKUP 4WD (31X10.5R-15 TIRE) 1988-89 LOCK-UP SPEEDS (1)

Application MPH
"D" Range (2)(3)(4)
NORM
Lock-Up ON in 2nd 24-26
Lock-Up ON in 3rd 30-32
Lock-Up ON in OD 42-44
PWR
Lock-Up ON in 2nd 31-33
Lock-Up ON in 3rd 40-42
Lock-Up ON in OD 54-56
NORM
Lock-Up OFF in 2nd 21-23
Lock-Up OFF in 3rd 27-29
Lock-Up OFF in OD 40-42
PWR
Lock-Up OFF in 2nd 27-29
Lock-Up OFF in 3rd 35-37
Lock-Up OFF in OD 50-52
(1) Throttle valve opening 5%.
(2) There is no lock-up in "2" or "L" range.
(3) Transfer shift position H2 or H4.
(4) Lock-up will be released regardless of lock-up pattern when throttle is completely closed or brake light switch is ON.
PICKUP 4WD (P225/75R-15 TIRE) 1988-89 SHIFT SPEEDS (1)

Application MPH
"D" Range (2)
NORM
1st-2nd 28-30
2nd-3rd 55-59
3rd-OD 85-88
3rd-OD (3) 24-26
OD-3rd (3) 18-20
OD-3rd 81-85
3rd-2nd 50-52
2nd-1st 25-27
PWR
1st-2nd 33-35
2nd-3rd 63-66
3rd-OD 99-103
3rd-OD (3) 33-35
OD-3rd (3) 18-20
OD-3rd 95-99
3rd-2nd 59-63
2nd-1st 27-29
"2" Range (2) (NORM or PWR)
1st-2nd 28-30
2nd-3rd 68-71
3rd-2nd 55-57
2nd-1st 25-27
"L" Range (2) (NORM or PWR)
3rd-2nd 55-57
2nd-1st 31-33
(1) Wide open throttle.
(2) Transfer shift position H2 or H4.
(3) Fully closed throttle.
PICKUP 4WD (P225/75R-15 TIRE) 1988-89 LOCK-UP SPEEDS (1)

Application MPH
"D" Range (2) , (3) , (4)
NORM
Lock-Up ON in 2nd 22-24
Lock-Up ON in 3rd 27-29
Lock-Up ON in OD 39-41
PWR
Lock-Up ON in 2nd 29-31
Lock-Up ON in 3rd 37-39
Lock-Up ON in OD 50-52
NORM
Lock-Up OFF in 2nd 19-21
Lock-Up OFF in 3rd 25-27
Lock-Up OFF in OD 37-39
PWR
Lock-Up OFF in 2nd 25-27
Lock-Up OFF in 3rd 33-35
Lock-Up OFF in OD 46-48
(1) Throttle valve opening 5%.
(2) There is no lock-up in "2" or "L" range.
(3) Transfer shift position H2 or H4.
(4) Lock-up will be released regardless of lock-up pattern when throttle is completely closed or brake light switch is ON.
TROOPER II 1988 SHIFT SPEEDS (1)

Application MPH
"D" Range (2)
NORM
1st-2nd 29-31
2nd-3rd 56-61
3rd-OD 85-89
3rd-OD (3) 23-26
OD-3rd (3) 17-21
OD-3rd 81-86
3rd-2nd 50-53
2nd-1st 25-28
PWR
1st-2nd 34-36
2nd-3rd 63-68
3rd-OD 99-104
3rd-OD (3) 33-35
OD-3rd (3) 17-21
OD-3rd 96-101
3rd-2nd 59-64
2nd-1st 27-30
"2" Range (2) (NORM or PWR)
1st-2nd 29-31
2nd-3rd 68-73
3rd-2nd 54-68
2nd-1st 23-26
"L" Range (2) (NORM or PWR, 2nd-1st) 31-34
(1) Wide open throttle.
(2) Transfer shift position H2 or H4.
(3) Fully closed throttle.
TROOPER II 1988 LOCK-UP SPEEDS (1)

Application MPH
"D" Range (2) , (3) , (4)
NORM
Lock-Up ON in OD 39-42
Lock-Up OFF in OD 37-39
PWR
Lock-Up ON in OD 50-52
Lock-Up OFF in OD 46-48
(1) Throttle valve opening 5%.
(2) There is no lock-up in "2" or "L" range.
(3) Transfer shift position H2 or H4.
(4) Lock-up will be released regardless of lock-up pattern when throttle is completely closed or brake light switch is ON.
TROOPER & TROOPER II (P235/75R15 TIRE) 1989-90 SHIFT SPEEDS (1)

Application MPH
"D" Range (2)
NORM
1st-2nd 27-29
2nd-3rd 54-56
3rd-OD 81-85
3rd-OD (3) 20-23
OD-3rd (3) 15-17
OD-3rd 78-81
3rd-2nd 49-51
2nd-1st 24-26
PWR
1st-2nd 32-34
2nd-3rd 61-63
3rd-OD 95-99
3rd-OD (3) 31-33
OD-3rd (3) 15-17
OD-3rd 92-95
3rd-2nd 56-61
2nd-1st 27-28
"2" Range (2) (NORM or PWR)
1st-2nd 27-29
2nd-3rd 66-69
3rd-2nd 54-55
2nd-1st 24-26
"L" Range (2) (NORM or PWR)
3rd-2nd 84-87
2nd-1st 46-50
(1) Wide open throttle.
(2) Transfer shift position H2 or H4.
(3) Fully closed throttle.
TROOPER & TROOPER II (P235/75R15 TIRE) 1989-90 LOCK-UP SPEEDS (1)

Application MPH
"D" Range (2) , (3) , (4)
NORM
Lock-Up ON in OD 37-40
Lock-Up OFF in OD 34-37
PWR
Lock-Up ON in OD 49-51
Lock-Up OFF in OD 44-47
(1) Throttle valve opening 5%.
(2) There is no lock-up in "2" or "L" range.
(3) Transfer shift position H2 or H4.
(4) Lock-up will be released regardless of lock-up pattern when throttle is completely closed or brake light switch is ON.
TROOPER & TROOPER II (31X10.50 TIRE) 1989-90 SHIFT SPEEDS (1)

Application MPH
"D" Range (2)
NORM
1st-2nd 27-29
2nd-3rd 54-58
3rd-OD 83-86
3rd-OD (3) 22-24
OD-3rd (3) 17-19
OD-3rd 79-83
3rd-2nd 49-51
2nd-1st 25-26
PWR
1st-2nd 32-34
2nd-3rd 61-65
3rd-OD 96-100
3rd-OD (3) 31-33
OD-3rd (3) 17-19
OD-3rd 93-97
3rd-2nd 58-62
2nd-1st 27-29
"2" Range (2) (NORM or PWR)
1st-2nd 27-29
2nd-3rd 66-69
3rd-2nd 53-55
2nd-1st 25-26
"L" Range (2) (NORM or PWR)
3rd-2nd 53-55
2nd-1st 29-31
(1) Wide open throttle.
(2) Transfer shift position H2 or H4.
(3) Fully closed throttle.
TROOPER & TROOPER II (31X10.50 TIRE) 1989-90 LOCK-UP SPEEDS (1)

Application MPH
"D" Range (2) , (3) , (4)
NORM
Lock-Up ON in OD 38-40
Lock-Up OFF in OD 35-37
PWR
Lock-Up ON in OD 48-50
Lock-Up OFF in OD 44-46
(1) Throttle valve opening 5%.
(2) There is no lock-up in "2" or "L" range.
(3) Transfer shift position H2 or H4.
(4) Lock-up will be released regardless of lock-up pattern when throttle is completely closed or brake light switch is ON.
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