Sonata GL V6-3.0L (1997)
Technical Service Bulletin # 97-40-029
Date: 970901
A/T, TPS, Idle Switch - Poor Driveability
Group: TRANSAXLE
Number: 97A0-029
Date: SEPTEMBER, 1997
Model
1996-97 2.0L SONATA
1995-97 3.0L SONATA
Subject
TRANSAXLE DRIVEABILITY (THROTTLE POSITION SENSOR AND IDLE SWITCH ADJUSTMENT PROCEDURE)
DESCRIPTION:
Correct adjustment of the throttle position sensor (TPS) and idle switch is essential for proper driveability. A TPS or idle switch out of adjustment may
cause one or more of the following driveablity conditions:
^
Park to Reverse or Park to Drive engagement shock
^
Engine speed fluctuation between 1000 - 1700 rpm during slow cruise at light throttle opening or during deceleration
^
Harsh 4-3 downshift shock when decelerating to a stop
^
Harsh 1-2 and 2-3 upshift
^
Rough idle
The idle switch is incorporated in the TPS assembly on the 1996-97 2.0L and 1995-97 3.0L Sonata. To ensure proper adjustment, the idle switch is used
to make the initial adjustment to the assembly. After adjustment, confirm that the falls within the standard value range given in the Shop Manual and this
TSB.
WARRANTY INFORMATION:
Normal warranty operation codes and times apply.
Service Procedure
1.
Ensure that the engine idle, throttle cable and cruise control cable (if equipped) are adjusted properly. Refer to the appropriate Shop Manual for
the adjustment procedure.
2.
Connect the HDS scan tool to the data link connector and turn the ignition switch ON.
3.
From the Menu, select "Transaxle", "Codes and Data Menu" and "Data" screen, then go to "IDLE SW".
4.
Place a 0.025 in (0.65 mm) thick feeler gauge between the fixed Speed Adjusting Screw (SAS) and throttle lever.
