How do i fix my high rpm miss on a sl2 motor - 1999 Saturn SL

Could be bad ignition module as they have a low rpm section and a high rpm section. Low side may be failing as it heats up. Hard to test for this as parts store testers may not see the problem.

Coil pack is famous on these cars try another coilpack two types multiplug oval or square

it might not be the starter it could just be a relay i would check the relay and if it is just clicking when you try to start it then that is probubly it if not maybe you have a bad batery

your idle air control motor is messed up needs replaced first test with a voltmeter also check make sure you dont have no vacumm leaks pop the hood listen for a loud sucking noise check all vacumm lines make sure not came unplugged then check aic

My car was doing this pretty bad and I changed the engine coolant temp sensor and it fixed my problem. Hope this helps!!

Trans or trans controller.

change your O2 sensor.

Disconnect connector at blower under pass side of dash.Check for power & ground with the blower switch in the #4 speed (High).Most Likely a blower motor if all 4 speeds are out.If high works but no other speeds,you need a blower resistor.Blower easy to change 3 screws & one connector.hope this helps

Check the intake manifold gaskets for leaks. It also could be the Idle speed control motor

Pin point the dead hole and check that injector.