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What would cause engine to stall when stopping at red light?

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Old Sep 2, 2004 | 08:47 PM
  #1  
doc's Avatar
doc
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Joined: Jul 1999
Posts: 2,149
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From: Mims, Florida
Car: '87 IROCZ
Engine: 395 ZZ4
Transmission: ProBuilt 700R4
Axle/Gears: 9 bolt 3.70s
What would cause engine to stall when stopping at red light?

I finally got my 395 cu in stroker in and am doing some tuning I have the 165 ECM using a modified 6E definition file. Check out the signature for other info on the engine.

Does anyone have a suggestion of why it stalls out? I have gone thru the intake stuff and have located and elimenated the vacuum leaks.
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Old Sep 2, 2004 | 09:22 PM
  #2  
8Mike9's Avatar
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Joined: Jul 1999
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From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
I'd keep on eye on IAC counts when you close the throttle coming to a stop.

Most likely it is in the tuning, might get better luck on the PROM board, since it probably ran okay with the other motor?
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Old Sep 2, 2004 | 10:02 PM
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From: parishville NY upstate
Car: 86 IROC-Z
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.42s/posi/disc
prolly not it but it could be your torque converter not unlocking all the way.
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