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Car takes 2 seconds to stop running after shut off

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Old Oct 3, 2011 | 02:47 PM
  #1  
JLCustomizing's Avatar
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Joined: Sep 2011
Posts: 126
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From: North Iowa
Car: 1984 Trans Am
Engine: 5.7 Liter V8
Transmission: Auto 700R4
Axle/Gears: Stock
Car takes 2 seconds to stop running after shut off

About 1 out of 3 times when I shut off my 84 t/a it runs for 1-2 seconds then shuts off. Any ideas? Its a 77 chevy 350 block with 305 heads and a 4 barrel quadrajet if that helps.
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Old Oct 3, 2011 | 03:20 PM
  #2  
LS4GXP's Avatar
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Joined: Dec 2009
Posts: 784
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: Car takes 2 seconds to stop running after shut off

Does it feel like its trying to start back up? Grinding noise from the motor?

Sounds to me a bad tune, car diesels on shutdown. Get a tune and it should go away.
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