Powertrain - Idle Speed Modified by Replacement ECM
ENGINEEG003-99
Title:
3RZ-FE ECM IDLE SPEED
Models:
'95-'97 Tacoma
April 23, 1999
Introduction
Operating logic of 1995-97 Tacoma ECMs has been revised to improve engine idle smoothness (with transmission in "D" range). By increasing idle speed with A/C compressor "OFF", this change has also narrowed the RPM transition between A/C "OFF" and "ON" engagement:
Affected Vehicles
^ 1995-1997 Tacomas equipped with 3RZ-FE four cylinder engine and automatic transmission.
Part Number Information
OLD PART NUMBER NEW PART NUMBER PART NAME
89661-04060 89661-04061 1995 ECM (Fed. Spec.)
89661-04080 89661-04081 1995 ECM (Cal. Spec.)
89661-04200 89661-04201 1996 ECM (50 States)
89661-04270 89661-04271 1997 ECM (50 States)
Production Change Information
^ No production changes have been made.
^ This change applies only to replacement ECMs available through parts supply.
Warranty Information
Applicable warranty*
This repair 19 covered under the Federal Emission Control Warranty. This warranty is in effect for 96 months or 80,000 miles, whichever occurs first, from the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.