A/T - AXOD Harsh Slow Speed 3-2 Gear Downshift
Article No.93-9-12
04/28/93
TRANSMISSION - AXOD - HARSH 3-2 DOWNSHIFTS AT SLOW SPEEDS
LINCOLN-MERCURY:
1988-90 CONTINENTAL
ISSUE:
Harsh 3-2 torque demand downshifts, when turning or accelerating and coasting to a slower speed, normally 15-30 MPH (24-48 KM/H) may be caused by;
^ Fluid levels too low or too high.
^ Throttle Valve (TV) Cable out of adjustment or damaged.
^ Engine or transaxle mounts separated or damaged.
^ Low/intermediate servo piston return spring cocked in its bore.
^ Main control calibration
ACTION:
Check fluid levels, Throttle Valve (TV) cable operation, engine/transaxle mounts, low/intermediate servo piston and main control calibration for proper operation. Refer to the following procedure for service details.
DIAGNOSIS AND SERVICE PROCEDURE
1. Check transaxle fluid levels. Fluid level should be set to the "full" mark with the transaxle and engine at normal operating temperature.
CAUTION:
DO NOT OVERFILL
2. Check TV pressure. TV pressure should be at 12 p.s.i. Adjust TV cable if pressure is not correct. Refer to TSB # 89-15-10 but set to 12 p.s.i.
NOTE:
FOR CORRECT ADJUSTMENT OF THE TV CABLE, IT MAY BE NECESSARY TO REMOVE TV CABLE FROM MOUNTING BRACKET AT THROTTLE BODY. ALSO CHECK THAT THE MOUNTING BRACKET IS NOT BENT. THIS WILL CAUSE INCORRECT TV PRESSURE.
3. Check TV cable for damage. Look for loose crimp joints, slippage between outer black sheath and inner white piece of the TV cable housing in the area under the crimp at the throttle body. This may occur if the outer sheath has been pulled. If TV cable is damaged and/or will not hold the correct TV pressure adjustment, replace it.
4. Check engine/transaxle mounts for fluid leakage, tears or "rattles" (mounts should not make any noise when shaken). Replace if damaged.
NOTE:
ROAD TEST VEHICLE AT THIS POINT. IF CONCERN IS STILL PRESENT GO TO STEP 5.
5. Check the low/intermediate servo piston return spring. It may be cocked in the bore. Install spring retainer (FODZ-7G151-A) over end of low/intermediate servo return spring.
6. Install updated main control with revised calibrations (Refer to TSB # 90-4-11); (FODZ-7A100-B for 88 Continental and E90Y-7A100-B for 89/90 Continental).
NOTE:
EXCHANGE TRANSAXLE UNITS HAVE UPDATED MAIN CONTROLS.
Parts Block
OTHER APPLICABLE ARTICLES:
89-15-10, 90-4-11
WARRANTY STATUS:
Eligible Under Basic Warranty Coverage, Major Component Warranty Coverage
OPERATION DESCRIPTION TIME
930912A Inspect 0.8 Hr.
930912B Replace TV Cable, Inspect 3.3 Hrs.
Trans Mounts And Road Test
930912C Replace TV Cable, Inspect 6.3 Hrs.
And/Or Replace Trans
Mounts And Inspect
Low/inter Servo
930912D Replace TV Cable, Inspect 9.9 Hrs.
And/Or Replace Trans
Mounts, Inspect
Low/Inter Servo And
Remove And
Replace Main Control
DEALER CODING
BASIC PART NO. CONDITION CODE
7A100 07
OASIS CODES:
502000