PCM is located on the driver side, under the dash. You have to remove the dashboard that is held down by 2 screws, located in the middle, and clips.
Left.
No.
No
One kind of spark plugs that is recommended for a 1999 Saturn SL2 manual with a 1.9 twin cam engine are ones made by Bosch. Another good brand would be ones made by NGK.
In the twin cams i have worked on, the guilty one is either a broken cam, or a bent valve.Something like that should be consulted by your local repair shop.
Fron the engine bay
See saturnfans.com
usually but not always
Inside the fuel tank.
5W30
Saturns 91-02 are distributorless engines and therefore have no ignition timing adjustments.
How do I replace the water pump in my 1994 Saturn SL2 series standard twin cam.