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car idles high

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Old Mar 25, 2008 | 07:15 PM
  #1  
FalconTi0's Avatar
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car idles high

Hello all, i just bought my first muscle car and it has a 305 carb. when it is in Neutral or park the RPMs stay kinda of high and when i put it from park or neutral, to drive or reverse there is a jerk then all is fine. one person told me (without looking) it had to be the transmission. a couple people looked at it and thought the carburetor needed tunning. I just wanted to hear some thoughts from some people more familiar with muscle cars. thanks ahead of time for your help.
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Old Mar 25, 2008 | 09:56 PM
  #2  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Welcome aboard thirdgen.org.

First, some basic questions:
Is the choke light coming on?
Is the alternator charging properly?

Those questions assume the choke is not opening fully. Have you checked that?
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Old Mar 26, 2008 | 02:10 AM
  #3  
FalconTi0's Avatar
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Re: car idles high

i didnt see the choke light come on and the altenators seems to be working just fine. thank you for the welcome. im a newbie so you will probably see a few simple questions from me in the near future lol.
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Old Mar 26, 2008 | 09:29 AM
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five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
So, does your choke open up all the way after running a few minutes, or does it hang half open?
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Old Mar 26, 2008 | 10:42 AM
  #5  
KJZ28/TA's Avatar
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From: New York
Car: 2002 Camaro
Engine: :(
Transmission: T5
Re: car idles high

I had the same problem. Then after driving like that for months it started to run rough. Brought it in. Found out it needed a new choke.
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Old Mar 26, 2008 | 04:47 PM
  #6  
FalconTi0's Avatar
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Re: car idles high

yea im starting to think it is the choke, im gonna just check that out and if it isn't that i'll probabl have a mechanic check it out. thank you all.
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Old Mar 27, 2008 | 03:37 PM
  #7  
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From: Greenville WI
Car: 91 Firebird
Engine: Turbo 355
Transmission: T-56
Axle/Gears: 3.73:1 7.625" 10 Bolt
Re: car idles high

Welcome. What year is your car? Is the carb stock? Aftermarket or stock ignition? You can set up a signature with all your cars information at the bottom of you post by going to User CP.
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Old Mar 27, 2008 | 05:39 PM
  #8  
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From: El Paso, Texas
Car: '84 Camaro
Engine: 305
Transmission: 700R4
Axle/Gears: stock
Re: car idles high

This may be off the wall - so fair warning:

It doesn't get very cold where I live, so I just took the choke plate out of my carb and have never had any kind of problems. I read where a lot of people have choke-related problems. If you live in warm country - you don't need it!
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Old Mar 27, 2008 | 07:19 PM
  #9  
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Joined: Mar 2008
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From: Mesquite, Tx
Car: 89 Camaro RS
Engine: 350
Transmission: 700r4
Axle/Gears: Stock
Re: car idles high

I dont have a choke on my carb, the only down side is that it will take longer for you to warm up your car. You dont really need a choke as long as you dont mind warming up your car with your foot. Hope this helps you, also you could just turn the idle down.
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Old Mar 27, 2008 | 07:46 PM
  #10  
cameron7710's Avatar
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From: lynnwood,Washington
Car: 1992 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 2.73
Re: car idles high

when my car did somthing simaler it was a vaccum leak no clue if thats ur problem tho
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