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Idle problem

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Old Aug 17, 2006 | 09:58 PM
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Default Idle problem

I have an 80 coupe,350 motor,the car runs great,but when I stop at a light or stop sign ,the idle stays high and gradually comes back to normal after about 15-30 seconds.I rebuilt the carb(Q-Jet) , is this a possible choke setting problem or something else,again the car runs great until you stop.Any thoughts?
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Old Aug 17, 2006 | 10:11 PM
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Standard or auto?
If you tap the throttle does it idle back down?
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Old Aug 17, 2006 | 10:11 PM
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Check the vacuum advance.
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Old Aug 17, 2006 | 10:19 PM
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Default Idle problem

Yes I forgot to include that in my post,it's an auto and yes will sometimes have to tap gas pedal to get it to idle down.
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Old Aug 17, 2006 | 10:28 PM
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Lubricate all the carb/throttle linkage
I know a stronger return spring will fix it but this shouldnt be necessary

This has been a common problem for me no matter which QJet I am running....Sometimes it wont act up for weeks and then it just appears...
Also, make sure your air cleaner is not interfering with any of the linkage.
I have found that newly bushed primary throttle shafts need to be lubricated a few times before they act correctly
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Old Aug 17, 2006 | 10:31 PM
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Thanks for all the input,I'll check all that tomorrow
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