Vibration And/or Low Rumble At Idle Otherwise Drives And Shifts Well.

[ojairon]

I just bought a 1999 RX 300. I notice a slight vibration at idle. Could this be motor mounts?

[chiks]

it is the resonance of the exhaust system. Most RX300 suffer from it. no known fix. but this TSB may work for you. NV011-98

Lexus Supports ASE Certification Page 1 of 2

Title:

IDLE BOOMING/VIBRATION FIELD FIX

Models:

’99 RX 300

Technical Service

Information Bulletin

August 14, 1998

NV011–98

To reduce noise and vibration at idle speeds, a dynamic damper has been added to the

center exhaust pipe for both 4WD and 2WD models.

􀀀 1999 model year RX 300:

2WD manufactured before VIN JT6GF10U*X0007065

4WD manufactured before VIN JT6HF10U*X0015585.

OLD PART NUMBER NEW PART NUMBER PART NAME

17420–20130 same Pipe Assembly, Exhaust, Center

N/A 17581–46060 Damper, Exhaust Pipe

Gasket, Rear

(17451–74060)

Center Pipe

(17420–20130)

Damper

Bracket

Damper

Gasket, Front

(17451–20020)

OP CODE DESCRIPTION TIME OPN T1 T2

NV8024 Install Exhaust Damper 0.2 17581–46060

44 99

170181 R & R Center Pipe Assembly 0.5 17420–20130

Applicable Warranty*:

This repair is covered under the Lexus Basic Warranty. This warranty is in effect for

48 months or 50,000 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.

NVH

Introduction

Affected

Vehicles

Parts

Information

Warranty

Information

[ojairon]

I just bought a 1999 RX 300. I notice a slight vibration at idle. Could this be motor mounts?

Thanks of the information. I will check this out with my mechanic. My car now has 71000 on it so I am out of luck with the warranty.