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91 formula 305 tpi bad pickup coil? Intermittent stall.

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Old Jul 25, 2020 | 02:18 PM
  #1  
Dirty_Duke's Avatar
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From: Oregon USA
Car: 91 firebird formula ws6
Engine: TPI 305 (R6P)
Transmission: R6P t5 5 speed
Axle/Gears: 3.42:1 Posi Diff
91 formula 305 tpi bad pickup coil? Intermittent stall.

I've already posted about this issue but I got answers like new plugs, wires and cap and rotor but that's all new. I also replaced the icm and the tps and the iac valve. I'm trying to fix a stall that happens when I run high rpms under load ~4.5k rpm and if I keep it in gear it doesn't stall but if i have the clutch in or on neutral right after pushing it a bit hard and let it return to idle speed it just dies. Starts if I pump the gas but runs weird. But it i never push it that high it it won't stall and it idles great and has great timing. Drove it for 200 miles and it was fine if I didn't push it. Could it be fuel related? Or pickup coil? Also pulled a code 42 after the stall.

Thanks in advance for any answers!

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Old Jul 25, 2020 | 03:30 PM
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GeneralDisorder's Avatar
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From: Portland, OR
Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: 91 formula 305 tpi bad pickup coil? Intermittent stall.

What are the BLM and INT values when this occurs? What's the fuel pressure?

GD
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Old Jul 25, 2020 | 09:05 PM
  #3  
Dirty_Duke's Avatar
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From: Oregon USA
Car: 91 firebird formula ws6
Engine: TPI 305 (R6P)
Transmission: R6P t5 5 speed
Axle/Gears: 3.42:1 Posi Diff
Re: 91 formula 305 tpi bad pickup coil? Intermittent stall.

Originally Posted by GeneralDisorder
What are the BLM and INT values when this occurs? What's the fuel pressure?

GD
what's the BLM and INT valve? And we haven't tested fuel pressure since it gave us a code 42 when it wouldn't start without pumping the gas. Could code 42 just be a code from a no start? I also just drove it and didn't push it past 3k rpm and it never died but when I shut it off and went to roll up the windows and turned on the ignition and the check engine light wouldn't turn off and it had the same no start without fuel. I'm kinda stumped.
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Old Jul 25, 2020 | 10:43 PM
  #4  
GeneralDisorder's Avatar
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From: Portland, OR
Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: 91 formula 305 tpi bad pickup coil? Intermittent stall.

You need live data. Without consulting the computer you are just blind.

GD
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Old Jul 26, 2020 | 10:29 AM
  #5  
Dirty_Duke's Avatar
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Joined: Feb 2020
Posts: 126
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From: Oregon USA
Car: 91 firebird formula ws6
Engine: TPI 305 (R6P)
Transmission: R6P t5 5 speed
Axle/Gears: 3.42:1 Posi Diff
Re: 91 formula 305 tpi bad pickup coil? Intermittent stall.

Originally Posted by GeneralDisorder
You need live data. Without consulting the computer you are just blind.

GD
i don't have any device to get live data with, so what would be the best approach?
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