What would cause a 93 Buick Lesabre to idle high sometimes as if someone had the gas...

  • Thread starter Thread starter Marcos C
  • Start date Start date
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Marcos C

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...petal to the floor? The car only idles high sometimes and idles down went driving as if its going to cut off. It doesnt matter if its cold or hot outside. If I took my foot off the brake and put it in drive it would take off doing about 45mph. I replace the pvc valve and check the vac any ideas.
 
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