Deceleration Shutoff Valve, Checking

Deceleration Shutoff Valve, Checking

Special tools, testers and auxiliary items required







- Hand Vacuum Pump V.A.G 1390

Test conditions
- Performance deficiency or load change shocks
- Vacuum hoses checked for porosity and kinks.

Test sequence

NOTE: Deceleration shutoff valve is located in front of turbocharger. It is opened by vacuum during deceleration and at idle.







- Check through-flow of vacuum connection on intake manifold - arrow - with the Hand Vacuum Pump V.A.G 1390.
- Remove deceleration shutoff valve.







- Connect Hand Vacuum Pump V.A.G 1390 to vacuum connection of deceleration shutoff valve.
- Operate Hand Vacuum Pump V.A.G 1390.
- Deceleration shut-off valve must open - arrow -.
- Operate ventilation valve at Hand Vacuum Pump V.A.G 1390.
- Deceleration shut-off valve must close - arrow -.
If deceleration shutoff valve does not open or does not close, replace valve.

NOTE: Connections of deceleration shutoff valve are to be fastened with screw-type clamps.