Testing and Inspection: Wastegate Component Information
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Wastegate: Testing and Inspection
Wastegate
NOTE: Boost pressure must be present
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Boost pressure measurements are made while driving. For safety reasons it is necessary to take along a second person to read the gauge.
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engine oil temperature: minimum: 80°C (176°F)
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no leakage from vacuum connections
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remove kick panel trim on right side of footwell
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remove (ignition) vacuum advance hose from connection electronic ignition control unit
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connect pressure gauge VW 1397 with T-connection, between previously removed vacuum hose and ignition control unit
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place pressure gauge on front passenger seat
NOTE: Do not allow hose to become pinched or restricted in any way when placing gauge inside vehicle
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open shut-off valve on pressure gauge (arrow)
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accelerate vehicle from 35 MPH (56 KPH) at wide open throttle
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manual transmission - 3rd gear
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automatic transmission - 2nd gear
NOTE: Automatic transmission NOT in kickdown mode
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at 55 MPH (88 KPH) close shut-off valve on pressure gauge VW 1397 (arrow) and read pressure on gauge, (correct pressures are based on
altitude)
