What causes a 1973 monte carlo to idle so hard when in park or on steping on breaks?

1973 CHEVROLET MONTE CARLO
10,000 MILES
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PRICESHAE
  • MEMBER
  • 1 POST
I could be driving down the highway, pull in the parking lot or traffic light my car idles real hard. So I would have to reach my foot behind the gas peddle and left it up to calm it down. what could be the problem that's causing it to idle like that?
Feb 12, 2012 at 5:28 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Try adjusting the A/F mix and idle speed, clean EGR and PCV valves
Feb 12, 2012 at 5:55 PM
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