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Your 1989 TBI 305 runs for about 20 seconds then shuts off it has new wires plugs cap and it will start right back up?
Wiki User
∙ 15y ago
Do You have your air intake connected? If not there is a sensor that will shut down your engine check your MAP and MAT sensor I think you might need to check your fuel supply, or your oil pressure sending unit. When the engine shuts down, you try and start the engine by turning the key off and back on, this resets the fuel pump to the 2 second run time before ECM takes over. When the engine is running the ECM looks for oil pressure, if there is no pressure or very little, then the ECM automatically shuts engine down to save it from self destruction of the crank bearings.
Wiki User
∙ 15y ago
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