Possibly one of the cylinders is misfiring. Try a tune-up and/or check the cylinder compression of all 4 cylinders.
No
No.
Fron the engine bay
It isn't. You've been misinformed.
How do I replace the water pump in my 1994 Saturn SL2 series standard twin cam.
usually but not always
See saturnfans.com
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.
5W30
Inside the fuel tank.
Yes. The '95 and '92 Saturns used the same single and twin cam engines.
What is the firing order on a 1993 saturn sl2 twin cam?