Test Method
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the oxygen sensor.
- Connect the gage bar tool kit SA9127E 0-60 in H2O.
- With the engine at normal operation temperature, observe the exhaust back pressure at constant 4,000 RPM for 5 seconds.
- Back pressure must be less than 20.13 in H2O (5.0 kPa).
- Replace the damaged or defective parts.
- Remove the test equipment.
- Install the oxygen sensor and tighten.
Tighten: Tighten the oxygen sensor to 45 N.m (33 lb ft).
IMPORTANT:
If the exhaust pressure exceeds specification, inspect for dents/obstructions. It may be necessary to disconnect the muffler or the pipe before or behind the converter and repeat the test.
IMPORTANT:
Use not silicon anti-seize compound on the threads. It may be necessary to use a scan tool to delete any codes set while performing the pressure test.