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very high idle on 1990 Buick Regal

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
done check vacum lines,replace throttle control senor,,,is there a idle senor???or what else could be promble..sounds like car ready to blow up idle is so high,,
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