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1991 Trans am starting problems

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Old May 23, 2022 | 02:36 AM
  #1  
goalieforlife's Avatar
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From: Newfoundland, Canada
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
1991 Trans am starting problems

My 1991 GTA 5.0 tpi car would not start. However unplugging the cooling sensor and then the car would start but immediately cut out after firing up.

So i replaced the temperature sensor but the same problems persists. Any idea on whats causing this. Is the pigtail bad, another sensor?

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Old May 23, 2022 | 11:59 AM
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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 Trans am starting problems

Any codes for cts high or low ?
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Old May 23, 2022 | 12:58 PM
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goalieforlife's Avatar
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From: Newfoundland, Canada
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: 1991 Trans am starting problems

no check engine codes.. the car won't start long enuf to display any
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Old May 23, 2022 | 01:04 PM
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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 Trans am starting problems

Might check basics fuel pressure and injector pulse. Unplugging the cts will increase fuel.
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Old May 23, 2022 | 10:04 PM
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goalieforlife's Avatar
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From: Newfoundland, Canada
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: 1991 Trans am starting problems

Originally Posted by Tuned Performance
Might check basics fuel pressure and injector pulse. Unplugging the cts will increase fuel.
new fuel injectors and according to the garage the pressure is good. I'm at a loss... maybe another fuel related sensor?
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