Maxima V6-2960cc 3.0L SOHC MFI (VG30E) (1990)
Technical Service Bulletin # 95021
Date: 950308
MIL ON - DTC 45 (Injector Leak)
Classification:
EF & EC95-05
Section:
Engine Fuel & Emission Control
Reference:
Technical Bulletin NTB95021
Date:
March 8, 1995
POOR ENGINE DRIVEABILITY and/or CHECK ENGINE LIGHT ON (CODE 45- INJECTOR LEAK)
APPLIED VEHICLES:
All Pre-OBD II, CONSULT compatible vehicles
SERVICE INFORMATION
This bulletin outlines procedures and methods to isolate the cause(s) of mixture related driveability incidents. The bulletin also covers incidents where
the check engine light is illuminated and code 45 is stored, but there are no driveability symptoms.
SERVICE PROCEDURE
NOTE:
^
ANY SENSOR INPUT THAT CAN CAUSE A "RICH" FUEL SIGNAL CAN CAUSE AN INJECTOR LEAK CODE.
^
ANY CAUSE FOR EXCESSIVE FUEL PRESSURE CAN CAUSE AN INJECTOR LEAK CODE.
The best way to resolve a Code 45 or driveability incident is to carefully go through ALL the following steps:
1. CONSULT ALPHA TEST
2. MASS AIR FLOW SENSOR TEST
3. FUEL PRESSURE REGULATOR TEST
4. INJECTOR LEAK DOWN TEST
5. ENGINE COOLANT TEMPERATURE SENSOR TEST
6. OXYGEN (02) SENSOR TEST
7. QUALITY CONTROL CHECK
Consult Alpha Test
Note:
The best way to resolve a Code 45 or driveability incident is to carefully go through ALL the steps contained within this bulletin.