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|19.01.2005: Front O2 sensor|
You need to raise the front of the car to do the job (I used ramps).
First, unscrew the front O2 sensor using an open ended 7/8" wrench.
A bit of solvent would not hurt first. You might try to attempt the rear
O2 sensor too, but there's very little clearance around it, so it's
easier to take care of it later.
The downpipe installation procedure for a 1996 Saab 900 (also applies to the
1999-2002 9-3 models). The pipe is supplied by
It is a 3" aluminized steel downpipe with a Magnaflow high flow
- ramps or jack stands;
- 13 mm socket or wrench: downpipe to turbo nuts, exhaust clamp bolts
(a 1/2" worked better in my case due to a tighter fit);
- 7/8" open end wrench: O2 sensors;
- flat screwdriver: to release the tab on the O2 sensor connector;
- a heavy tool or a length of pipe to bend exhaust hangers;
- wire brush: to clean the joint between the flex pipe and the cat;
- exhaust sealant: to seal the joint between the flex pipe and the cat;
- torque wrench.