V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

No power to injectors

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Old Mar 4, 2006 | 06:37 AM
  #1  
redbird8628's Avatar
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From: Highlands, NJ
Car: 1986 Firebird
Engine: 3.4 outa 95' bird
Transmission: T5
Axle/Gears: 3.42 open rear
No power to injectors

i finally got to play with the car some more yestrday, and I have saprk, but no power to fuel injectors(checked with noid light). All the wires are good, so i ordered up a remanufactured computer from NAPA, it will be here tuesday.
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Old Mar 4, 2006 | 06:48 AM
  #2  
Dale's Avatar
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From: AR
Car: 1991 Camaro RS Vert
Engine: 350 S-TPI
Transmission: T5
Axle/Gears: GU5/G80/J65
How is ground only to the injectors?
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Old Mar 5, 2006 | 08:39 AM
  #3  
bru333's Avatar
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From: Smithfield, NC
Car: 1987 Camaro SC
Engine: 2.8L MPFI (rebuilt)
Transmission: 700R4 swapped to T5
Axle/Gears: 3.42 open
Re: No power to injectors

Originally posted by redbird8628
All the wires are good, so i ordered up a remanufactured computer from NAPA,
What leads you to believe the computer is bad? You only listed 3 things that you checked (spark, power to inj., wires).
Did you check the injector fuse?
If the ignition module isn't sending a signal to the computer it won't power the injectors.
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Old Mar 5, 2006 | 10:59 AM
  #4  
redbird8628's Avatar
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From: Highlands, NJ
Car: 1986 Firebird
Engine: 3.4 outa 95' bird
Transmission: T5
Axle/Gears: 3.42 open rear
i got some flow charts and im gonna look at it today, it was way to cold out latley, and the ecm wont be in until tuesday, and even then, i dont have to buy it.
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Old Mar 5, 2006 | 05:05 PM
  #5  
2_point8_boy's Avatar
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Joined: Nov 2002
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From: Castaic, CA
Car: 1988 Camaro RS
Engine: 2.8L of Raw POWER!!!
Transmission: Stick Shift
Axle/Gears: 3.42's
Re: Re: No power to injectors

Originally posted by bru333
What leads you to believe the computer is bad? You only listed 3 things that you checked (spark, power to inj., wires).
Did you check the injector fuse?
If the ignition module isn't sending a signal to the computer it won't power the injectors.
The injectors are always powered, just not grounded, as this is done by the ECM.

If you have no power to the injectors, then the ECM isn't going to fix anything. You have to trace the problem in the power side of the cicuit. I guess you have to break out the DMM to test stuff, huh?
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Old Mar 6, 2006 | 10:53 AM
  #6  
redbird8628's Avatar
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From: Highlands, NJ
Car: 1986 Firebird
Engine: 3.4 outa 95' bird
Transmission: T5
Axle/Gears: 3.42 open rear
i think i found my problem, on one of the plugs going into the ecm, the black / white striped wire, im assuming ground was loose. I wiggled it and the fuel pump would come on along with the ses light when key on enine off.
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Old Mar 6, 2006 | 11:15 AM
  #7  
2_point8_boy's Avatar
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From: Castaic, CA
Car: 1988 Camaro RS
Engine: 2.8L of Raw POWER!!!
Transmission: Stick Shift
Axle/Gears: 3.42's
Sounds like a start, that's for sure.
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