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you have to adjust the Idle position sensor on the throtle body,it has two small cap screws ,you loosen them and turn the sensor and tighten the screws when you reach the idle speed you want.the motor should be warm so you'll get the idle you want.make shure it's not to slow or the engine will die when you put it in gear.

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โˆ™ 2015-07-15 21:41:37
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Q: How do you adjust the engine speed on a 1993 Buick LeSabre?
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