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cold start problem

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Old Feb 26, 2004 | 02:37 PM
  #1  
tealman92's Avatar
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From: Ontario, California
Car: 1992 Z28
Engine: 383
Transmission: 700R4
cold start problem

I have a 89 gta auto with new 355 it seems only to happen when the car is cold. It runs really rough and hesitates then when it warms up its fine. It just started doing it since I just got the car fixed it had a bad fuel pressure regulator so I cahnged that and put it 24# injectors any thoughts
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Old Feb 26, 2004 | 07:13 PM
  #2  
Kevin91Z's Avatar
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Joined: Jul 1999
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Did you reprogram the PROM for those larger injectors?
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Old Feb 27, 2004 | 12:01 AM
  #3  
tealman92's Avatar
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Joined: Mar 2002
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From: Ontario, California
Car: 1992 Z28
Engine: 383
Transmission: 700R4
yes it has a custom burned chip specificly for my application I think i found the problem I had 2 plug wires burned on the headers and the fuel pressure needed a bump as it was I was running lean at idle so Ill try that in the morning and see how she does Ill keep you posted
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