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Compression Check: Customer Interest
Engine - Reduced Performance/Turbo DTC's Set

Bulletin Number: 219-2494

Reduced performance and diagnostic trouble codes for the turbo control valve.

Cars Affected:
Saab 9-5 M98 - 
Saab 9-3 (9400) M98-03
Saab 9-3 (9440) M03-

Background

Analyses of returned turbochargers have revealed that the source if the fault is often in other components rather than the turbo itself. Normally faults are
in the by-pass diaphragm, the wastegate unit or in the control function for the turbo. This can give rise to low boost pressure, reduced performance and
diagnostic trouble codes being generated. To avoid the turbo being replaced unnecessarily a more thorough analysis needs to be performed, in
accordance with the following.

Symptom description

Low boost pressure, reduced performance

Procedure

Before a possible turbo replacement, the system must be checked in accordance with the following checklist. This list must be enclosed with the turbo in
the event of any claim.

To perform the test measurements, Tech2, 30 14 883 Pressure/vacuum pump and 83 93 514 Boost pressure gauge are required.

1.

Enter the information shown.

Engine, Cooling and Exhaust > Engine > Compression Check > System Information > Technical Service Bulletins > Customer Interest for Compression Check: > 219-2494 > Mar > 05 > Engine - Reduced Performance/Turbo DTC's Set

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