Pickup 2WD V6-180.5 2959cc 3.0L SOHC (3VZ-E) (1989)
Engine Control Module: All Technical Service Bulletins
Engine Control - ECM Modification Improves Driveability
REFERENCE
ENGINE
NUMBER
008 (REVISED)
DATE
09-15-89
MODEL
TRUCK (VN)
TITLE
3VZ-E ENGINE (VN): ECU MODIFICATION
A modified Electronic Control Computer (ECU) for 1988 and early production 1989 V-6 Trucks and 4 Runners, is now in production. This modified
ECU will provide:
-
Smoother acceleration during cold engine operation.
-
Reduced engine ping under light to moderate engine loads.
-
Improved startability after a hot dead soak of 3 to 5 hours.
This modification is applicable to all 1988 and early production 1989 model V6 trucks and 4 Runners.
PRODUCTION EFFECTIVE
PART NUMBER INFORMATION
SERVICING INFORMATION:
Before replacing an ECU, perform a thorough inspection to verify that all engine mechanical, fuel and electrical/electronic systems are operating within
recommended specifications.