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Old 06-25-2009, 11:24 AM   #1
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Location: Charlotte, NC
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Car: 85 firebird
Engine: 3.4L V6
Transmission: auto

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High Idle
Ok well I can't seem to figure out whats the problem with my car. The idle seems to be at 1,500 RPM and is pretty rough. On some days the idle is around 1,000 RPM and feels better but its still high. Any ideas what might be causing this?
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Old 06-25-2009, 05:25 PM   #2
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Join Date: Mar 2000
Location: Littleton, CO USA
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Car: 82 Berlinetta(2)/57 Bel Air
Engine: LS1 (LS1)/LQ4
Transmission: 4L60E (T56)/4L80E
Axle/Gears: 10B 3.73(9" 4.11)/8.2" 4.11

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'84 V6 was carb. There is a high probability that your choke is not opening up completely, leaving the high idle cam engaged. If the choke butterfly is not open completely, the mixture will be too rich, which can cause rough running.
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Old 06-25-2009, 06:19 PM   #3
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Car: 85 firebird
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Re: High Idle
Actually mines fuel injected. 84 was the first year fuel injection was offered.
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Old 06-25-2009, 07:23 PM   #4
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Join Date: Mar 2000
Location: Littleton, CO USA
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Car: 82 Berlinetta(2)/57 Bel Air
Engine: LS1 (LS1)/LQ4
Transmission: 4L60E (T56)/4L80E
Axle/Gears: 10B 3.73(9" 4.11)/8.2" 4.11

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'85 was the first year FI V6 was offered.

Sure you have an '84?
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Old 06-27-2009, 10:42 AM   #5
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Re: High Idle
Weird I guess its an 85 then. Anyways I know for a fact its fuel injected.
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Old 06-27-2009, 04:54 PM   #6
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Car: 1991 Black Z28 G92
Engine: 350 for now
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Re: High Idle
um..... anyone see the "85" in the car info?
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Old 06-27-2009, 04:54 PM
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