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305 TBI problems

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Old Jan 3, 2021 | 01:52 PM
  #1  
Rich89's Avatar
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From: Alabama
Car: 1989 formula
Engine: 305 for now
Transmission: Factory auto
305 TBI problems

I have a 1989 firebird formula 305 tbi, just bought it a few weeks ago not running. Code 54. I bypassed vats with the resistor. Fuel pump doesn't prime with key on but you can hear it run after turning the motor over. I have no spark, and no fuel out of the injectors. I have replaced icm, and coil, still no spark. Tested the pick up coil while cranking over and have no voltage. Swapped out computers as I had one here. I jump the fuel pump relay and the alternator buzzes, I ground out the green and white wire from the relay and fan turns on. Sorry this post is all over the place but I don't know what to do next other than possibly replace the distributor. Input please as I am.lost.


Last edited by Rich89; Jan 3, 2021 at 06:07 PM.
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Old Jan 3, 2021 | 03:04 PM
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Re: 305 TBI problems

Since you didn’t have acv at the pu coil why haven’t you changed it ?
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Old Jan 3, 2021 | 05:07 PM
  #3  
Rich89's Avatar
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From: Alabama
Car: 1989 formula
Engine: 305 for now
Transmission: Factory auto
Re: 305 TBI problems

I'm debating whether I change the pick up coil or just order a new distributor since I have to remove it and take it apart.
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Old Jan 3, 2021 | 05:29 PM
  #4  
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Joined: Jan 2021
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From: Alabama
Car: 1989 formula
Engine: 305 for now
Transmission: Factory auto
Re: 305 TBI problems

Any chance someone here can tell me why I would have power at the tan and white wire in the fuel pump relay?
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Old Jan 4, 2021 | 09:00 PM
  #5  
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From: Alabama
Car: 1989 formula
Engine: 305 for now
Transmission: Factory auto
Re: 305 TBI problems

Update, I replaced the distributor this evening and cars running great.
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