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New tpi setup problem

Old Feb 21, 2005 | 05:49 PM
  #1  
Steve Guttu's Avatar
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From: ohio
New tpi setup problem

I just replaced my 305 with a 350, and it has tpi. I replaced the prom and installed fuel pressure regulator. I fired it up for the first time and everytime I start it, it will run for a few seconds and then stall out. Does anybody have an Idea whats wrong?
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Old Feb 21, 2005 | 06:18 PM
  #2  
SMasterson's Avatar
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From: Evansville, IN USA
Car: '89 GMC Pickup
Engine: 383 SBC Stealth Ram
Transmission: 700R4/VIG 3200
Is the replacement PROM AUJP, (four letter code on the MEMCAL)? if so, it has VATS enabled in it.
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Old Feb 21, 2005 | 06:19 PM
  #3  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
VATS wouldn't allow it to start in the first place.

Get a fuel pressure gage on it. Watch what it does before it's started and when it dies.
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Old Feb 21, 2005 | 06:41 PM
  #4  
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From: Evansville, IN USA
Car: '89 GMC Pickup
Engine: 383 SBC Stealth Ram
Transmission: 700R4/VIG 3200
Originally posted by five7kid
VATS wouldn't allow it to start in the first place.

A cold (under 100°) pre '89 will try to start with the cold start injector. Sometimes, even the others will try to start without a VATS signal for whatever reason.

Fuel pressure is a good place to look but he needs to make sure he's got the correct PROM to begin with.
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