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If it is running ragged and eventually stops, it is because the engine idle is too high. It has an idle solonoid that controls the idle speed and sometimes you need to take it out of the throtle body and clean it, If it just idles smoothly as if you didn't turn the key off, it is probably the ignition switch which is on the steering column under the dash. Not where you insert the key. that is simply the lock mechanism.

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โˆ™ 2004-06-09 10:12:38
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Q: Why would a 93 Saturn Sl2 engine keep running after the key is turn off?
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