A/T - Delayed Part Throttle Upshift and Harsh Downshift

91chrysler04

NO.: 21-06-91

GROUP: TRANSMISSION

DATE: April 22, 1991


SUBJECT: Delayed Part Throttle UpShift, Harsh Downshift, 1991 AN with 5.2L Engine & A-500 Transmission


1991 (AN) DAKOTA/DAKOTA SPORT/DAKOTA CAB & CHASSIS


SYMPTOM/MNDITION:

Some 1991 Dakota trucks built before MDH 10-16-XX equipped with 5.2L engine and A-500 automatic transmission may exhibit, delayed part throttle upshifts, harsh downshifts and/or a harsh initial engagement (garage shift). This condition may be the result of an interference between the kickdown rod and the exhaust manifold heat control valve anti-rattle spring pin.

Figure 1:

DIAGNOSIS:

With the transmission in PARK, engine OFF, have a helper slowly depress the accelerator pedal to WOT while observing the kickdown rod in the area of the heat control valve anti-rattle spring pin (Figure 1). If the kickdown rod contacts or comes within 1/8 inch of the anti-rattle pin perform the following repair.

If there is sufficient clearance between the kickdown rod and anti-rattle pin repair transmission as required.

NOTE: IF REPAIR REQUIRES ADJUSTMENT OF THE KICKDOWN ROD REPEAT THE DIAGNOSIS STEP TO ENSURE SUFFICIENT CLEARANCE IS MAINTAINED.


PARTS REQUIRED:

1 Kickdown Rod PN 52077985


REPAIR PROCEDURE:

This repair involves replacing and adjusting the kickdown rod.

1. Disconnect the kickdown rod from the throttle body and transmission throttle lever.

2. Install new kickdown rod PN 52077985.

3. Adjust the kickdown linkage as outlined on page 21-36 in your 1991 Dakota Rear Wheel Drive Service Manual, Publication # 81-370-1110.


POLICY: Reimbursable within the provisions of the warranty.


TIME ALLOWANCE:
Labor Operation No. 21-75-26-92 ........................ 0.4 Hrs.


FAILURE CODE: 50 - Improper adjustment