Question about 2003 Saturn ION
When the engine is cold there is a vibration in the engine and the MIL indicator/light flashes off and on ( like it is firing on 3 cylinders ) after the engine warms up. The MIL indicator/light goes out & the vibration goes away. The engine won't crank up now.
The vibration is a sparkplug that is misfiring. I would start by replacing the spark plugs. Also just in case add a can of dry gas to eliminate any possible water problems.
Posted on Jan 23, 2015
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Posted on Jan 02, 2017
SOURCE: 2005 saturn ion
I am not a mechanic and have had no problems with my 2005 Ion-2 but at msn/autos I see that these can exhibit a starting problem because of the ignition switch which they recommend replacing. The part is around $40 & the labor is 1 hr.
Posted on Feb 20, 2009
One is front of the cat, and one after the cat of the exhaust.
The OBD Scanner should tell you which bank is producing the error.
Bank one is the front one.
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Posted on Feb 21, 2009
that is your 'check engine' light.if it stays on, one or more sensors on your engine has sent a 'trouble code' to the on-board computer.a diagnostic code reader needs to be connected to it to determine the cause.
Posted on Oct 03, 2009
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Feb 24, 2016 | Saturn Cars & Trucks
The MIL turns OFF after the engine is started if a diagnostic fault is not present.
The MIL remains illuminated after the engine is started if the control module detects a fault. A diagnostic trouble code (DTC) is stored any time the control module illuminates the MIL due to an emissions related fault. The MIL turns OFF after three consecutive ignition cycles in which a Test Passed has been reported for the diagnostic test that originally caused the MIL to illuminate.
The MIL flashes if the control module detects a misfire condition which could damage the catalytic converter.
When the MIL is illuminated and the engine stalls, the MIL will remain illuminated as long as the ignition is ON.
When the MIL is not illuminated and the engine stalls, the MIL will not illuminate until the ignition is cycled OFF and then ON.
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