Achieva V6-3300 3.3L (1992)
Valve Body: Customer Interest
A/T - Erratic Shift, 2ND/3RD Starts, No TCC or Slipping
NUMBER:
92-T-95
CORP.REF.NO: 277122
DATE:
June 1992
SECTION:
7A, 4T60, 4T60-E
SUBJECT:
ERRATIC SHIFT, 2ND/3RD STARTS, NO TCC OR SLIPPING CONDITION
- PLASTIC SHOT LODGED IN SPACER PLATE
MODELS/YEARS:
ALL 1992 WITH 4T60 AND 4T60E
CONDITION:
Some vehicles equipped with a 1992 HYDRA-MATIC 4T60 (RPO ME9) or 1992 HYDRAMATIC 4T60-E (RPO M13) transaxle built on or before
April 1, 1992 (Julian Date 092) may exhibit erratic shifts, 2nd gear starts, 3rd gear starts, no TCC, or a slipping condition.
CAUSE:
The above condition may be caused by plastic shot lodged in a spacer plate orifice causing a restriction to that passage. The condition is dependent on
location and degree of shot entrapment. The transaxle may have been assembled with shot stuck between the casting walls or hub surface of the channel
plate and eventually forced into the spacer plate. The shot is originally yellow or white in color but may become translucent when exposed to normal
transaxle operating temperatures. The plastic shot may also become pliable and conform to the diameter of the orifice. These two factors make the
condition very hard to identify, especially when inspecting the smaller orifice in the spacer plate.
CORRECTION:
Begin with the "Quick Check Procedure" ("Automatic Transaxle Diagnosis" section of the 1992 Service Manual) which provides a general outline of
how to properly diagnose a HYDRA-MATIC 4T60/4T60-E transaxle. This procedure will aid the technician in choosing the proper path to diagnose the
symptom by describing the basic checks and then referencing the location of the specific diagnostic checks. This will ensure the vehicle has been
properly diagnosed and no unnecessary repairs are performed.
If it is suspected the transaxle contains this concern, it is essential that the channel plate and spacer plate be inspected 100 percent. This can be
accomplished by the following procedure: NOTE: Make certain the work area is adequate and CLEAN for the layout and inspection of components.
