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  #1  
Old 10-03-2004, 08:56 PM
Mulaka Mulaka is offline
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Help 99 Silv

While sitting at a stop sign or light my truck revs down, lights dim, revs up lights come back to normal, revs down, lights dim, revs up....etc so on and so forth until I take off. Any reasons? No other problems except after it sits over night it idles terribley on first crank, and has a small split second hesitation before accelerating. After that, it does the rev thing sometimes and sometimes it doesn't. Runs great all day after that. I have checked fuel pressure regulator and it's fine, just had new fuel filter, plugs etc...done. Fuel pump doesn'r whine...what could it be?
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Old 10-05-2004, 08:58 AM
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Anyone?
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Old 10-05-2004, 02:19 PM
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Re: Help 99 Silv

My old 88' tarus did the same exact thing, except when it reved down it would stall if i dident give it some gas. I dont know why it did it, that car was just a pice of shit and i was glad to get rid of it.
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Old 10-05-2004, 04:11 PM
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Re: Help 99 Silv

alternator???
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Old 10-05-2004, 04:48 PM
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Re: Help 99 Silv

Idle Air Control Valve?? Not sure if the 99's have one or not???
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