Volkswagen Workshop Service and Repair Manuals

Special tools, testers and auxiliary items

• ◆ Ignition tester V.A.G 1367
• ◆ Adapter VW 1324
• ◆ T spanner 3231

Checking and adjustment conditions

• ● Oil temperature at least 60 °C.
• ● Cold start accelerator cable must not be pulled.
• ● Electric consumers switched off.

Injection pumps with one-piece injection pump sprocket

Injection pump with two-part sprocket
=>Page 23-37

Idling speed

The rpm can be measured using V.A.G. 1367 ignition tester with the TDC-sender or VW 1324 adapter.

• ‒ → Adjust by turning the idling speed adjusting screw -1-
       Setpoint value: 900±30/min

Note:

If by adjusting the screw on the adjustment lever -1- the idling speed cannot be set below 930 rpm because the adjustment lever -3- is against the stop screw -2- then continue as follows:

• ‒ → Release stop screw -2- for lower idling speed and screw back.
• ‒ Set idling speed at adjusting lever -1- to 900 rpm.
• ‒ Turn stop screw -2- until it contacts the adjusting lever -3- and then lock lock nut.

Checking and if necessary adjusting idling speed boost

• ‒ When pulling the CSA cable out to the first stage the engine speed will increase by approx. 60 rpm.
  With the cable fully pulled out the engine speed must increase to 1050 ± 50 rpm.

If idling speed is not to specification 1050± 50 with cable pulled fully out:

• ‒ → Release stop screw -arrow- and, with CSA cable fully withdrawn, set higher idling speed by turning stop screw to 1050 rpm.
• ‒ Lock stop screw.

Injection pumps with two-part injection pump sprocket

Injection pump with one-part sprocket
=>Page 23-35

Idling speed

The engine speed can also be measured in measured value block of self-diagnosis with fault reader V.A.G 1551.

• ‒ → Adjustment is by turning the idling speed adjustment screw -1-, with the T spanner 3231.
       Specification: 900± 30 rpm

Idling speed boost

When engine is cold or when switching on the air conditioner the idling speed will be increased by the idling speed boost actuator.

• ‒ → With the engine warm, press the stop lever manually to the end position of adjusting screw -2-; rpm must increase to 1050±50 rpm

If idling speed is not to specification 1050± 50 rpm:

• ‒ Release stop screw locking nut -2- and adjust increased idling speed to 1050 rpm by turning the stop screw.
• ‒ Lock stop screw.