Engine - Squealing Noise On Cold Start Up
ENGINEEG003-05
Title:
2UZ-FE ACCESSORY DRIVE
BELT NOISE
Models:
'00 - '05 Tundra & '01 - '05 Sequoia
February 9, 2005
Introduction
Some customers may experience abnormal squeal noise from the engine accessory drive belt area, usually during cold start-up. An improved accessory drive belt has been developed to correct this condition.
Applicable Vehicles
^ 2000 - 2005 model year Tundra vehicles equipped with 2UZ-FE engine produced BEFORE the Production Change Effective VIN shown below.
^ 2001 - 2005 model year Sequoia vehicles equipped with 2UZ-FE engine produced BEFORE the Production Change Effective VIN shown below.
Production Change Information
Parts Information
Warranty Information
Applicable Warranty*:
This repair is covered under the Toyota Comprehensive Warranty. This warranty is in effect for 36 months or 36,000 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.
Repair Procedure
Replace the accessory drive belt with the improved part.
1. Remove existing accessory drive belt.
A. Using a breaker bar or ratchet with a 14 mm socket, apply counterclockwise force on the accessory drive belt tensioner to release tension and remove the accessory drive belt.
HINT:
The pulley bolt for the belt tensioner has a left hand thread.
B. Using the accessory drive belt routing label located on the passenger side of the radiator core support as a guide, install the new accessory drive belt.
2. Check belt tensioner operation.
A. Check that the belt tensioner moves downward when the drive belt is pressed down at the points indicated in the illustration with approximately 98 N (10 kgf, 22.0 lbf) of force.
B. Ensure proper alignment of the belt with the ribbed grooves of each pulley.
C. Check by hand to ensure that the belt has not slipped out of the groove on the bottom of each pulley.
D. Check that the arrow mark on the belt tensioner falls within area "A" of the scale (see illustration).
E. If the arrow mark falls outside area "A," the drive belt is incorrect.
HINT:
When a new belt is installed, it should lie within area "B." If not, the drive belt is incorrect.