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idle problem at night

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Old Dec 12, 2006 | 09:39 AM
  #1  
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911cindi
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Joined: Dec 2006
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Default idle problem at night

Need help trying to find why ,my 88 Mustang 5.0 w/MAF , when I turn the lights on at night my RPM bounces from 500-900 and the motor acts like it wants to cut off. It seams to run fine during the day. ?? Open for suggestions.[]
Old Dec 12, 2006 | 01:59 PM
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GreyStang
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Default RE: idle problem at night

Is your voltage regulator in good shape? When you rev the engine at night do the leadlights get brighter/dimmer with the revving?
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