Hum or rev noise when running vehicle

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Hum or rev noise when running vehicle
Device	2002 ES300
Affects part(s)
Needs equipment
Difficulty
Type

Problem description

When listening from outside vehicle noise not herd. Inside vehicle noise is herd from body.

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Possible areas of Problem:

• Possible areas of problem: With stethoscope listen to fuel pressure damper set (on fuel rail). If pulsation is herd suspect damper

Solution

Fuel Pressure Pulsation Damper Assy was the problem

Repair Steps

Replace Fuel Pressure Pulsation Damper