240SX L4-2389cc 2.4L SOHC MFI (KA24E) (1989)
Engine Control Module: Customer Interest
Engine Controls - Idle Fluctuation
Classification:
EF&EC91-001
Section:
Emission Control
Reference:
TECHNICAL BULLETIN NTB91-022
Models:
1989-90 240SX
Date:
March 7, 1991
240SX IDLE FLUCTUATION
APPLIED MODEL: 1989-90 240SX (S13)
APPLIED DATE: Federal -
June 8, 1990
Calif. -
All 89-90
APPLIED VINS:
Federal -
JN1HS34P*LW 109709
-
JN1HS36P*LW 153129
Calif. -
All 89-90
SERVICE INFORMATION
Some 1989-90 240SX vehicles produced before the applied date may experience idle fluctuation when coming to a stop (engine warm) or after a warm
restart. If this occurs, perform the following service procedure.
SERVICE PROCEDURE
1.
Verify proper adjustment of the engine control components and idle speed according to Service Manual specifications and adjustment
procedures.
2.
If these components are within specification and self diagnosis indicates code 55 (all clear) in mode III, replace the ECU with the new part listed
below.
PARTS INFORMATION
MODEL
CALIBRATION
NEW PART
FORMER PART
M/T
Federal
2371M-40F08RE
23710-40F05
California
2371M-42F08RE
23710-42F05
A/T
Federal
2371M-4OF68RE
23710-40F65
California
2371M-42F66RE
23710-42F65