If the shifter is moving from Drive to
Neutral, then I would think the shift cable is in need of adjustment or
the detents are worn out. I would suggest letting a transmission shop
look at it for you.
Check this RECALL for 1993 Jeep Grand Cherokee: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:FLOOR SHIFT
Summary: On certain sport utility vehicles, if a
driver has not placed the shifter lever fully into the "park" position
and leaves the vehicle running, the vehicle may unexpectedly move
rearward after seeming to be stable.
Consequence: Inadvertent movement of the vehicle could result in a crash.
Fix: Dealers will install a secondary detent
system to the floor shifter assembly. DaimlerChrysler sent interim
notices to owners concerning this problem on March 22, 2002. Owner
notification began September 23, 2002. Owners who take their vehicles
to an authorized dealer on an agreed upon service date and do not
receive the free remedy within a reasonable time should contact
DaimlerChrysler at 1-800-853-1403.
I additiona at TSB previous, I suggtes check Neutral Start/Back-Up Light Switch (also called Neutral Safety Switch)
To replace the switch, simply unbolt it from the transmission, disconnect the wires and install a new switch.
Fig. 1: Except on the AW4, the switch is screwed into the side of the transmission (click image for zoom)
Fig. 2: Neutral start/back-up light switch removal on the AW4 (click image fo zoom)
ADJUSTMENT
Except AW-4 Model
The switch is not adjustable on these transmissions.
AW-4 Models
(see Figure 3)
Fig. 3: Neutral start/back-up light switch adjustment
Loosen the adjusting nut
With the transmission in neutral, rotate the switch to align the neutral standard line with the groove on the valve shaft.
Hold the switch in this position and tighten the adjusting bolt to 108 inch lbs. (12 Nm).
Bend the tabbed washer over the retaining nut.
Connect the shift linkage rod.
Connect the switch wiring.
Check the switch operation. The engine should start in
P
and
N
only.
This and other details could find in the Repair Manual: ZJ-1993-Service-Manual-Secc-21-Transmision (if you need this section or another in english, send me a comment with your email).
Hope helps.
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Yes that iformation was great.... Thank you
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