I have a '93 Saturn SL2 1.9L DOHC.When I start it up and it idles down its got a rough idle and rough on acceleration, then let off gas and keep a steady speed and will run fine. Cant figure it out? Thanks for any help.

SOURCE: 1999 Saturn SL2 DOHC Engine - Fuel pump not pumping fuel.

The Saturn Fuel pump relay and fuse is located undar the panes on the passenger side of the center console near the passengers left foot there are two relays there that look identical one is fuel pump relay. Just switch them around they are bot the same and see if the fuel pump runs now also the fuel pump fuse is in there i can't send diaagrams on fixya because their program will not let them go through if you need one email me at [email protected] Please give me a fixya rating if this information is helpful to you

SOURCE: engine diagram for saturn sl2 1998

Try pulling the engine coolant temp sensor, They often crack not sure why but the ceramic tip cracks makes the car hard to start, the car's idle may race while shifting gears, and often smokes. The sensor is on the right side of the engine when looking at it on the head. Easy to change and get too

SOURCE: 1997 saturn sl2 dohc is there a timing belt or chain on it

These engines have a timing chain, not a belt. They also have nylon coated guides under the cover that wear. If you change the chain yourself, or have it done, check the guides as well.

SOURCE: Saturn SL 2002 High Idle

Intake manifold gasket. Leaking where intake meets head.

SOURCE: Car jerks while driving at steady speeds

Did you have the wires replaced also?? If not I would replace both the plugs & the wires all at the same time.You may have carbon tracking on your wires & plugs.What Year is Saturn?? If it's a 91-94 You most likely have a EGR Valve floating due to a weak internal spring.It will cause a surge miss at constant throttle.Hope This Helps!!