Recirculating Valve For Turbocharger, Checking

Engine code AEB

Special tools and equipment





- V.A.G 1390 Hand vacuum pump

Checking conditions
- Noticeable reduced performance or load change judders

Checking sequence

NOTES: The recirculating valve for turbocharger is located in front of the turbocharger. It is opened by vacuum pressure during the overrun phase and at idling speed.





- Connect hand vacuum pump V.A.G 1390 to vacuum connection on recirculating.
- Operate hand vacuum pump.
- Recirculating valve must open (arrow).
- Operate vent valve on hand vacuum pump.
- Recirculating valve must close (arrow).

If recirculating valve does not open or close:
- Replace recirculating valve for turbocharger.

NOTES: The recirculating valve connections are secured with screw-type clips.