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1991 Z28 TPI

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Old Jun 12, 2019 | 08:24 PM
  #1  
Kenny Quintero's Avatar
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1991 Z28 TPI

Hello Everyone!,

I just picked up a 91 Z28 from my neighborhood as a project. The car has an issue accelerating. It runs and starts and you can give it a bit of gas before it bugs down and tries to cut off... If you push on the gas like you normally would it wants to shut down. If you kind of easy the pedal little by little it kinds of let you accelerate some up to 3500 RPM no higher than that. Is not missing either that I can tell. The car will not drive since you can't accelerate. Things d=one so far flushed the gas tank, new fuel filter, new plugs, new alternator, ANY help tracking this bug would be awesome! Thx!
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Old Jun 12, 2019 | 08:31 PM
  #2  
Tuned Performance's Avatar
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: 1991 Z28 TPI

What’s your fuel pressure at ?
Have you ohmed your injectors cold and hot ?
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Old Jun 13, 2019 | 06:34 AM
  #3  
mcgarnicle's Avatar
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From: erlangen, Germany
Car: 1991 Z28 1LE
Engine: LS1
Transmission: T56
Axle/Gears: 3.42
Re: 1991 Z28 TPI

Catalytic converter may be plugged. Much exhaust coming out of the tail pipe? Could also be fuel pressure and/or injectors like Tuned Performance mentioned, or distributor problem i.e. ICM, pickup coil etc.
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