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Air filter change Volkswagen Transporter T4 1990 - 2003 Diesel 1.9

OnDemand step-by-step maintenance & repair BETA

Volkswagen
Transporter T4
1990 - 2003  | 1.9 Air filter change

  • time 5 to 45 minutes
  • difficulty 1

Circular-type air cleaner housing

1 The air filter element is located in the air cleaner housing, which is situated on the right-hand side of the engine compartment.
2 Release the upper air cleaner housing retaining clip (see illustration).
Release the upper air cleaner housing retaining clip
3 Push the locking handle down and unhook it from the air cleaner housing (see illustration).
Push the locking handle down and unhook it from the air cleaner housing
4 Lift the air cleaner housing up and manipulate it out from its location (see illustration).
Lift the air cleaner housing up and manipulate it out from its location
5 Lift out the element, noting its direction of fitting, and wipe out the housing (see illustration).
Lift out the element and wipe out the housing
6 If carrying out a routine service, the element must be renewed regardless of its apparent condition.
7 If you are checking the element for any other reason, inspect its lower surface; if it is oily or very dirty, renew the element. If it is only moderately dusty, it can be re-used by blowing it clean with compressed air.
8 Fit the new element using a reversal of the removal procedure. Ensure that the plastic lug on the end of the filter element locates in the retainer element. With the housing in position, pull the locking handle up until it engages.

Square-type air cleaner housing

9 The air filter element is located in the air cleaner housing, which is situated on the right-hand side of the engine compartment.
10 Release the hose clip and disconnect the air outlet duct from the air cleaner cover (see illustration).
Release the hose clip and disconnect the air outlet duct from the air cleaner cover
11 On TDi engines, disconnect the wiring connector from the airflow meter located on the air cleaner cover (see illustration) .
Disconnect the wiring connector from the airflow meter located on the air cleaner cover
12 Lift the two clips and release the wiring harness from the air cleaner cover (see illustration) .
Lift the two clips (arrowed) and release the wiring harness from the air cleaner cover
13 Release the two catches securing the air cleaner cover to the housing. Lift the cover up, disengage it from the housing and manipulate it out from the engine compartment (see illustrations).
Release the front catch...
...and the rear catch...
...then lift the cover up and manipulate it out from the engine compartment
14 Lift out the element, noting its direction of fitting, and wipe out the housing (see illustration).
Lift out the element and wipe out the housing
15 If carrying out a routine service, the element must be renewed regardless of its apparent condition.
16 If you are checking the element for any other reason, inspect its lower surface; if it is oily or very dirty, renew the element. If it is only moderately dusty, it can be re-used by blowing it clean with compressed air.
17 Fit the new element using a reversal of the removal procedure.
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