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Shutting off and no start

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Old Mar 5, 2014 | 06:32 PM
  #1  
Tigerfan13's Avatar
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Joined: Oct 2013
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Car: 86 Iroc Z
Engine: 350
Transmission: 700r4
Shutting off and no start

Got a 86 iroc, after car gets warm it does not want to start back. Now it is also shutting off after running and not starting back. Thought it may be ignition module, replaced it and still doing the same thing. I have also swapped computers and that did not help. Any help would be appreciated.
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Old Mar 5, 2014 | 07:44 PM
  #2  
vetteoz's Avatar
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Shutting off and no start

Originally Posted by Tigerfan13
after car gets warm it does not want to start back.
Now it is also shutting off after running and not starting back.
When it won't start confirm strong spark at the plug
Pull some plugs out.

Wet plug ; generally no spark
Dry plug ; no fuel
Not uncommon for old injectors will fail when they heat up , do the injector resistance test ( when cold and when hot )

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Old Mar 5, 2014 | 07:58 PM
  #3  
Tigerfan13's Avatar
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Car: 86 Iroc Z
Engine: 350
Transmission: 700r4
Re: Shutting off and no start

I'll give it a shot, I'll let u know how it goes. Thanks
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Old Mar 9, 2014 | 02:15 PM
  #4  
Tigerfan13's Avatar
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Joined: Oct 2013
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Car: 86 Iroc Z
Engine: 350
Transmission: 700r4
Re: Shutting off and no start

Turned out to be tps sensor, somehow it got bumped and was off
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Old Mar 9, 2014 | 05:06 PM
  #5  
vetteoz's Avatar
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20 Year Member
iTrader: (13)
 
Joined: Apr 2005
Posts: 7,736
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Shutting off and no start

Originally Posted by Tigerfan13
Turned out to be tps sensor,
1st thing to do when you have problems

https://www.thirdgen.org/forums/tech...s-dumbies.html
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Old Mar 9, 2014 | 08:28 PM
  #6  
Tigerfan13's Avatar
Thread Starter
Junior Member
 
Joined: Oct 2013
Posts: 7
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Car: 86 Iroc Z
Engine: 350
Transmission: 700r4
Re: Shutting off and no start

That wasn't the only problem, got a bad wire somewhere behind distributor and a mess with the grounds, is there a diagram or something that shows the ground locations
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Old Mar 9, 2014 | 10:19 PM
  #7  
vetteoz's Avatar
Supreme Member
20 Year Member
iTrader: (13)
 
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Shutting off and no start

https://www.thirdgen.org/forums/tpi/...locations.html
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