21 10 01 August 25, 2010 2024061
Rattling Noises from Engine Compartment Area or Exhaust System
Customers may complain of a rattling noise from engine or exhaust area while accelerating from 1800-3000
In order to complete proper diagnosis and ensure that the noise is coming from the turbocharger, use the
1. Ensure that there is no physical internal or external damage to the turbocharger. If damage is observed,
continue diagnosis and repair as necessary. If no damage is observed, proceed to step 2.
2. Test drive the vehicle to duplicate and familiarize yourself with the noise. Noise can typically be duplicated by
driving up a moderate incline, beginning at 35 mph in 4th gear (manual or automatic transmission) and
accelerating through the RPM range of 1800-3000 RPM under moderate to heavy throttle. Obey all local traffic
3. Once you have confirmed and familiarized yourself with the noise, attach a 2 ounce wheel weight to the wastegate actuator rod and take the vehicle for another test drive. If after attaching the weight to the actuator rod the noise is quieter or has changed in pitch, DO NOT replace the turbocharger. Remove the weight
, create a VTA ticket in ElsaWeb and contact the Volkswagen Technical Helpline at 800-555-5555. If after attaching the weight to the actuator rod the noise has not changed, remove the weight and continue diagnosis and repair as necessary.