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’O’rings generating drivability problems

SERVICE INFORMATION
Bulletin Nbr: 232-1734
Date: ........... MARCH 1997
Market: ALL
’O’rings generating drivability problems


Cars affected

Saab 900 M94 onwards with naturally aspirated 4-cylinder engines (B204i/B206i/B234i).

Background

If the ’O’ rings between the resonator and the throttle body have been fitted incorrectly so that they are not seated properly, the engine can draw in air that has not passed through the mass air flow sensor. This can give rise to drivability problems with implications for fault diagnosis.

Action

When any work is done that involves removing the resonator from the throttle body, the following steps must always be taken:


Check the condition of the ’O’ rings and that they are properly seated. Replace any that are deformed.

Grease the ’O’ rings with acid-free petroleum jelly.


Warranty conditions

Standard warranty conditions apply